AS overview
Test target: 2a0b:1d00:100:61::53 · ns1.speedy.it · address space: PA · prefixes announced: 1
prefix(es): 2a0b:1d00::/32
Targets & per-vantage-point probe results (2 target(s) across 7 vantage point(s))
Source codes (hover any badge for full description): CUR=curated · NS/SOA/MX=DNS records · SPF=SPF TXT · DRV=holder-derived (www, ns1, mail, gw, …) · ATL=RIPE Atlas · PDB=PeeringDB · WHOIS=RIPE whois · RDAP=RIPE RDAP · HIT=IPv6 Hitlist · RTR=in-prefix path hop (router) · PRB=static prefix probe · SYN=synthetic prefix::1 fallback
| Target IP / hostname | Source | SRB host (SOX, Belgrade) | DE host (Berlin) | DE host (Düsseldorf) | NL host (go6lab) | ITA host (Karsolink) | SLO host (6connect) | SLO host (T-2) | ||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ping | 1500B | :80 | :443 | reached | ping | 1500B | :80 | :443 | reached | ping | 1500B | :80 | :443 | reached | ping | 1500B | :80 | :443 | reached | ping | 1500B | :80 | :443 | reached | ping | 1500B | :80 | :443 | reached | ping | 1500B | :80 | :443 | reached | ||
2a0b:1d00:100:61::53ns1.speedy.it | NS | ✓ | ✓ | ? | ? | - | ✓ | ✓ | ? | ? | - | ✓ | ✓ | ? | ? | - | ✗ | ✗ | ? | ? | - | ✗ | ✗ | ? | ? | - | ✓ | ✗ | ? | ? | - | ✓ | ✓ | ? | ? | - |
2a0b:1d00:100:62::53ns2.speedy.it | NS | ✓ | ✓ | ? | ? | - | ✗ | ✗ | ? | ? | - | ✓ | ✓ | ? | ? | - | ✗ | ✗ | ? | ? | - | ✓ | ✓ | ? | ? | - | ✓ | ✓ | ? | ? | - | ✓ | ✓ | ? | ? | - |
MIX-IT / NAMEX / MINAP / TOP-IX / VSIX / EQUINIX-MILAN / BGPX-ROME / NAMEX-BARI / PCIX / DECIX-PALERMO peering
MIX-IT / NAMEX / MINAP / TOP-IX / VSIX / EQUINIX-MILAN / BGPX-ROME / NAMEX-BARI / PCIX / DECIX-PALERMO member - Open peering, peering member, since 2017-06-16. IPv6 LAN: 2001:7f8:b:100:1d1:a5d4:9709:219. Locations: -.
RPKI & ASPA
1 of 1 prefix(es) covered by a valid ROA.
| Prefix | RPKI state | Reason | Covering VRP(s) |
|---|---|---|---|
2a0b:1d00::/32 | ✓ valid | matched VRP (correct origin, length within maxLength) | AS49709 /29 maxLen 32 (ripe) |
Random-IP probe (yarrp) into the AS' prefixes
We probed 35 arbitrary IPv6 address(es) inside AS49709's announced prefix(es). No router inside the prefix responded. The deepest visible hop was 2001:7f8:b:100:1d1:a5d4:9709:219 at hop 18 - that router does not answer ICMPv6 Echo. This is not in AS49709's announced prefix; operationally it's the AS-edge / peering interface (often on an IXP peering address or an upstream's /127 link). The traceroute boundary is the AS edge: ICMPv6 Time-Exceeded responses from anything inside this AS are filtered.
ICMPv6 Type 2 (Packet Too Big) acceptance - active test
Vantage points disagree about Type 2 acceptance - transit ASes on one path may be filtering Type 2 even though the destination's stack accepts it on another path:
- SRB host (SOX, Belgrade): Type 2 honored. Forged PTB accepted; next response shrunk. (ICMPv6 Echo + forged PTB)
- DE host (Berlin): Type 2 honored. Forged PTB accepted; next response shrunk. (ICMPv6 Echo + forged PTB)
- DE host (Düsseldorf): Type 2 honored. Forged PTB accepted; next response shrunk. (ICMPv6 Echo + forged PTB)
- NL host (go6lab): inconclusive: no Echo Reply to 1300-byte probe. (ICMPv6 Echo + forged PTB)
- ITA host (Karsolink): inconclusive: no Echo Reply to 1300-byte probe. (ICMPv6 Echo + forged PTB)
- SLO host (6connect): Type 2 honored. Forged PTB accepted; next response shrunk. (ICMPv6 Echo + forged PTB)
- SLO host (T-2): Type 2 honored. Forged PTB accepted; next response shrunk. (ICMPv6 Echo + forged PTB)
Why they disagree - reachability mismatch: One vantage couldn't drive a flow at all to this destination (no Echo Reply or no responding TCP port), so the active test had no behavioural change to observe. The other vantage's verdict is the only meaningful one here.
Failure detail - what to grep in your logs
| vantage | our source | your target | method | result | tested (UTC) |
|---|---|---|---|---|---|
| belgrade | 2a09:ab81::91 | 2a0b:1d00:100:61::53 | icmp6-echo | honored | 2026-09-23T12:06:32Z |
| berlin | 2a06:d1c1:10b::cccc | 2a0b:1d00:100:61::53 | icmp6-echo | honored | 2026-09-23T12:06:30Z |
| duseldorf | 2a06:d1c1:10d::aaaa | 2a0b:1d00:100:61::53 | icmp6-echo | honored | 2026-09-23T12:06:27Z |
| go6lab | 2a00:8642:42::75 | 2a0b:1d00:100:61::53 | icmp6-echo | no_echo | 2026-09-23T12:07:53Z |
| karsolink | 2a12:d8c0:105a:9001::a154 | 2a0b:1d00:100:61::53 | icmp6-echo | no_echo | 2026-09-23T12:06:30Z |
| odin | 2607:fae0:a000::42 | 2a0b:1d00:100:61::53 | icmp6-echo | honored | 2026-09-23T12:06:29Z |
| t2 | 2a01:261:313:b814:2a0:98ff:fe5b:13e4 | 2a0b:1d00:100:61::53 | icmp6-echo | honored | 2026-09-23T12:06:31Z |
Attempt log (belgrade):
icmp6-echo→ honored (honored by fragmenting its reply into 2 via the IPv6 Fragment Header, rather than resizing)dns-tcp→ inconclusive (reply 156 B before PTB): max DNS-over-TCP segment 156B; not big enough to test PMTU shrinktls→ no_tcp: TLS connect failedhttp→ no_tcp: tcp/80 not open
Attempt log (berlin):
icmp6-echo→ honored (honored by fragmenting its reply into 2 via the IPv6 Fragment Header, rather than resizing)dns-tcp→ inconclusive (reply 147 B before PTB): max DNS-over-TCP segment 147B; not big enough to test PMTU shrinktls→ no_tcp: TLS connect failedhttp→ no_tcp: tcp/80 not open
Attempt log (duseldorf):
icmp6-echo→ honored (honored by fragmenting its reply into 2 via the IPv6 Fragment Header, rather than resizing)dns-tcp→ inconclusive (reply 156 B before PTB): max DNS-over-TCP segment 156B; not big enough to test PMTU shrinktls→ no_tcp: TLS connect failedhttp→ no_tcp: tcp/80 not open
Attempt log (go6lab):
icmp6-echo→ no_echo: no Echo Reply to 1300-byte probedns-tcp→ no_tcp: connect failed: timed outtls→ no_tcp: TLS connect failedhttp→ no_tcp: tcp/80 not open
Attempt log (karsolink):
icmp6-echo→ no_echo: no Echo Reply to 1300-byte probedns-tcp→ inconclusive (reply 156 B before PTB): max DNS-over-TCP segment 156B; not big enough to test PMTU shrinktls→ no_tcp: TLS connect failedhttp→ no_tcp: tcp/80 not open
Attempt log (odin):
icmp6-echo→ honored (honored by fragmenting its reply into 2 via the IPv6 Fragment Header, rather than resizing)dns-tcp→ inconclusive (reply 156 B before PTB): max DNS-over-TCP segment 156B; not big enough to test PMTU shrinktls→ no_tcp: TLS connect failedhttp→ no_tcp: tcp/80 not open
Attempt log (t2):
icmp6-echo→ honored (honored by fragmenting its reply into 2 via the IPv6 Fragment Header, rather than resizing)dns-tcp→ inconclusive (reply 156 B before PTB): max DNS-over-TCP segment 156B; not big enough to test PMTU shrinktls→ no_tcp: TLS connect failedhttp→ no_tcp: tcp/80 not open
To match the corresponding ICMPv6 packet on your side (host firewall, AS edge, or transit tap), look for our PTBs around the timestamps above:
sudo tcpdump -i any -n -e 'icmp6 and ip6[40] = 2 and (src host 2607:fae0:a000::42 or src host 2a00:8642:42::75 or src host 2a01:261:313:b814:2a0:98ff:fe5b:13e4 or src host 2a06:d1c1:10b::cccc or src host 2a06:d1c1:10d::aaaa or src host 2a09:ab81::91 or src host 2a12:d8c0:105a:9001::a154)'
If you see our PTBs arriving but the destination's TCP/Echo flow does not shrink, the drop is in the destination kernel (cause 3 below). If you don't see them at all, drop is upstream of you (cause 2). If you only see them from some of our source IPs but not others, the drop is path-asymmetric - at least one transit on the differing route is filtering.
Where the path divergence is
Per-vantage probe + verdict (headline):
- belgrade: probe
icmp6-echo→ verdicthonored - berlin: probe
icmp6-echo→ verdicthonored - duseldorf: probe
icmp6-echo→ verdicthonored - go6lab: probe
icmp6-echo→ verdictno_echo - karsolink: probe
icmp6-echo→ verdictno_echo - odin: probe
icmp6-echo→ verdicthonored - t2: probe
icmp6-echo→ verdicthonored
Full per-method matrix (all four methods run at each vantage):
| vantage | icmp6-echo | dns-tcp | tls | http |
|---|---|---|---|---|
| belgrade | honored | inconclusive | no_tcp | no_tcp |
| berlin | honored | inconclusive | no_tcp | no_tcp |
| duseldorf | honored | inconclusive | no_tcp | no_tcp |
| go6lab | no_echo | no_tcp | no_tcp | no_tcp |
| karsolink | no_echo | inconclusive | no_tcp | no_tcp |
| odin | honored | inconclusive | no_tcp | no_tcp |
| t2 | honored | inconclusive | no_tcp | no_tcp |
✓ All vantages agree on method(s): icmp6-echo - the headline-method spread above is dispatcher noise, not a real Type 2 disagreement.
These vantage-level disagreements are rooted somewhere in the forward paths. Joining each per-vantage traceroute against the IP→AS lookup from our global yarrp mesh, the first hop where the paths land in different ASes is the most likely site of the offending filter / unreachable AS / Type 2 drop.
Suspect transit ASes (ranked by how often they appear at the divergence point on the path of the worse-classifying vantage): AS9002, AS31034, AS49709.
- From belgrade (open/Type-2=honored) the path enters AS9002 at hop 6; from berlin (open/Type-2=honored) the same hop is in AS31034. Last common AS: AS31034. The disagreement is most likely rooted in one of those two transit ASes.
- From belgrade (open/Type-2=honored) the path enters an opaque hop at hop 7; from go6lab (all_blocked/Type-2=no_echo) the same hop is in AS9002. Last common AS: AS31034. The disagreement is most likely rooted in one of those two transit ASes.
- From belgrade (open/Type-2=honored) the path enters AS9002 at hop 6; from karsolink (open/Type-2=no_echo) the same hop is in AS31034. Last common AS: AS31034. The disagreement is most likely rooted in one of those two transit ASes.
- From belgrade (open/Type-2=honored) the path enters AS31034 at hop 8; from odin (open/Type-2=honored) the same hop is in AS49709. Last common AS: no shared transit. The disagreement is most likely rooted in one of those two transit ASes.
- From belgrade (open/Type-2=honored) the path enters AS9002 at hop 5; from t2 (open/Type-2=honored) the same hop is in AS6939. Last common AS: AS31034. The disagreement is most likely rooted in one of those two transit ASes.
- From berlin (open/Type-2=honored) the path enters an opaque hop at hop 14; from duseldorf (open/Type-2=honored) the same hop is in AS49709. Last common AS: AS49709. The disagreement is most likely rooted in one of those two transit ASes.
- From berlin (open/Type-2=honored) the path enters AS9002 at hop 4; from go6lab (all_blocked/Type-2=no_echo) the same hop is in AS50673. Last common AS: AS31034. The disagreement is most likely rooted in one of those two transit ASes.
- From berlin (open/Type-2=honored) the path enters AS31034 at hop 7; from karsolink (open/Type-2=no_echo) the same hop is in an opaque hop. Last common AS: AS49709. The disagreement is most likely rooted in one of those two transit ASes.
- From berlin (open/Type-2=honored) the path enters AS9002 at hop 4; from odin (open/Type-2=honored) the same hop is in AS5603. Last common AS: AS49709. The disagreement is most likely rooted in one of those two transit ASes.
- From berlin (open/Type-2=honored) the path enters AS9002 at hop 5; from t2 (open/Type-2=honored) the same hop is in AS6939. Last common AS: AS31034. The disagreement is most likely rooted in one of those two transit ASes.
- From duseldorf (open/Type-2=honored) the path enters AS49709 at hop 14; from karsolink (open/Type-2=no_echo) the same hop is in an opaque hop. Last common AS: AS49709. The disagreement is most likely rooted in one of those two transit ASes.
- From duseldorf (open/Type-2=honored) the path enters AS49709 at hop 14; from odin (open/Type-2=honored) the same hop is in an opaque hop. Last common AS: AS49709. The disagreement is most likely rooted in one of those two transit ASes.
- From go6lab (all_blocked/Type-2=no_echo) the path enters AS9002 at hop 6; from karsolink (open/Type-2=no_echo) the same hop is in AS31034. Last common AS: AS31034. The disagreement is most likely rooted in one of those two transit ASes.
- From go6lab (all_blocked/Type-2=no_echo) the path enters AS50673 at hop 4; from odin (open/Type-2=honored) the same hop is in AS5603. Last common AS: no shared transit. The disagreement is most likely rooted in one of those two transit ASes.
- From go6lab (all_blocked/Type-2=no_echo) the path enters AS9002 at hop 6; from t2 (open/Type-2=honored) the same hop is in AS6939. Last common AS: AS31034. The disagreement is most likely rooted in one of those two transit ASes.
- From karsolink (open/Type-2=no_echo) the path enters an opaque hop at hop 9; from odin (open/Type-2=honored) the same hop is in AS49709. Last common AS: AS49709. The disagreement is most likely rooted in one of those two transit ASes.
- From karsolink (open/Type-2=no_echo) the path enters AS31034 at hop 6; from t2 (open/Type-2=honored) the same hop is in AS6939. Last common AS: AS31034. The disagreement is most likely rooted in one of those two transit ASes.
- From odin (open/Type-2=honored) the path enters AS49709 at hop 8; from t2 (open/Type-2=honored) the same hop is in AS31034. Last common AS: no shared transit. The disagreement is most likely rooted in one of those two transit ASes.
Diagnosis is path-level, not packet-level: it tells you which transit AS is the prime suspect, not exactly which firewall rule is to blame. Use the tracepath6 output below (when available) for per-hop PMTU evidence on the same path.
✨ Diagnostic interpretation
An operator-targeted diagnostic interpretation can be generated for this AS on demand. The pipeline holds the raw verdicts and the per-hop walk; an AI pass synthesises where to start looking. Click the button below to run it.
Multi-vantage path map
Every hop of all vantages’ traceroutes toward the target, drawn left→right, grouped into per-AS bubbles (a hop seen from several vantages is one shared bubble, so converging paths merge). It answers two questions per vantage — shown on each source bubble as echo ✓/⚠/✗ · trace ✓/✗: did the destination reply to ICMPv6 Echo (✓ honored, ⚠ replied but PTB not honored, ✗ no reply), and did the traceroute reach it. A line to the target is drawn only when that vantage got an echo reply — solid if the PTB was honored, dashed if not (reachable but a broken-PMTUD / RFC 4890 violation). The path depth still shows how far the traceroute itself got, and runs of unanswered (* *) hops collapse into one dashed “silent” bubble. Open full size ↗
- ● SRB host (SOX, Belgrade)
- ● DE host (Berlin)
- ● DE host (Düsseldorf)
- ● NL host (go6lab)
- ● ITA host (Karsolink)
- ● SLO host (6connect)
- ● SLO host (T-2)
- ── solid line = echo reply, PTB honored (clean reach)
- — — dashed line = echo reply but PTB not honored (RFC 4890 violation)
- no line = no echo reply (never reached)
- ◉ target: green = clean, amber = reachable-but-violation / unreachable
- ⚠ suspected drop AS
- ⋯ silent (unanswered) hops
- ● IXP hop
From SRB host (SOX, Belgrade) openRFC 4890 ✓
filter likely at: (none) · min PMTU on path: 1500
4/4
Echo small (56B) 25.4ms
4/4
Echo 1500B (DF) 25.2ms
no
Type 1 dest-unreach
-
TCP responds on
Path (traceroute + mtr + PTR)
| # | IP / PTR | RTT | mtr loss | AS | AS holder |
|---|---|---|---|---|---|
| 1 | 2a09:ab81::1 | 0.3ms | 0%* | AS60733 | PERKE-NET - ZORAN PEROVIC trading as Agencija Perke.NET, RS |
| 2 | sox-pn.sox.rs 2001:7f8:1e:8::3a | 0.5ms | 0% | AS13004 | SOX - Serbian Open Exchange DOO, RS |
| 3 | 2001:7f8:1e:8::3d | 0.5ms | 0% | AS13004 | SOX - Serbian Open Exchange DOO, RS |
| 4 | 2a02:2d8:0:a00e:232a | 12.7ms | 10% | - | |
| 5 | RT.VSX.PDA.IT.retn.net 2a02:2d8::57f5:e07e | 20.7ms | 0% | AS9002 | RETN-AS - RETN Limited, GB |
| 6 | GW-Aruba.retn.net 2a02:2d8:4:180e:232a::1 | 32.3ms | 0% | AS9002 | RETN-AS - RETN Limited, GB |
| 7 | * | - | 90% | - | |
| 8 | er2-hu0-0-0-20.ip6.it1.aruba.it 2a00:6d40:1::1:ce | 37.0ms | 50% | AS31034 | ARUBA-ASN - Aruba S.p.A., IT |
| 9 | * | - | - | - | |
| 10 | * | - | 0% | - | |
| 11 | * | - | 0% | - | |
| 12 | * | - | - | - | |
| 13 | * | - | - | - | |
| 14 | * | - | - | - | |
| 15 | * | - | - | - | |
| 16 | * | - | - | - | |
| 17 | * | - | - | - | |
| 18 | * | - | - | - |
Rate-limited ICMPv6: hop 4, hop 7, hop 8 (loss between 5% and 95% across mtr cycles - the router replies but only sometimes).
tracepath -6
1?: [LOCALHOST] 0.016ms pmtu 1500
1: _gateway 0.544ms
1: _gateway 0.412ms
2: sox-pn.sox.rs 0.651ms
3: 2001:7f8:1e:8::3d 0.854ms asymm 2
4: ae8-930.RT.IRX.VIE.AT.retn.net 13.100ms asymm 3
5: RT.VSX.PDA.IT.retn.net 21.099ms asymm 4
6: GW-Aruba.retn.net 32.306ms asymm 7
7: cr1-hu0-0-0-3-720.ip6.it1.aruba.it 39.010ms asymm 6
8: er1-hu0-0-0-21.ip6.it1.aruba.it 33.663ms asymm 7
9: no reply
10: 2a0b:1d00:0:2201::1 30.125ms asymm 9
11: no reply
12: no reply
13: no reply
14: no reply
15: no reply
16: no reply
17: no reply
18: no reply
Too many hops: pmtu 1500
Resume: pmtu 1500 From DE host (Berlin) openRFC 4890 ✓
filter likely at: (none) · min PMTU on path: 1500
4/4
Echo small (56B) 29.9ms
4/4
Echo 1500B (DF) 30.6ms
no
Type 1 dest-unreach
-
TCP responds on
Path (traceroute + mtr + PTR)
| # | IP / PTR | RTT | mtr loss | AS | AS holder |
|---|---|---|---|---|---|
| 1 | xe-0-0-13-178.gw01.ber01.as59645.net 2a06:d1c1:100:b::1 | 0.3ms | 0%* | AS59645 | WYBT-NET - Tobias Fiebig, DE |
| 2 | ae0-2453.cr10.ber01.lwlcom.net 2a06:d1c0::dead:beef:1c02 | 0.7ms | 0%* | AS59645 | WYBT-NET - Tobias Fiebig, DE |
| 3 | retn.bcix.de 2001:7f8:19:1::232a:1 | 10.6ms | 0% | - | NA |
| 4 | RT.VSX.PDA.IT.retn.net 2a02:2d8::57f5:e07e | 22.6ms | 0% | AS9002 | RETN-AS - RETN Limited, GB |
| 5 | GW-Aruba.retn.net 2a02:2d8:4:180e:232a::1 | 28.5ms | 0% | AS9002 | RETN-AS - RETN Limited, GB |
| 6 | cr2-hu0-0-0-3-721.ip6.it1.aruba.it 2a00:6d40:1::1:159 | 28.5ms | 60% | AS31034 | ARUBA-ASN - Aruba S.p.A., IT |
| 7 | er1-hu0-0-0-20.ip6.it1.aruba.it 2a00:6d40:1::1:ca | 30.1ms | 50% | AS31034 | ARUBA-ASN - Aruba S.p.A., IT |
| 8 | * | - | - | - | |
| 9 | 2a0b:1d00:0:2201::1 | 35.5ms | 0% | AS49709 | VIDEOBYTE - Videobyte S.r.l., IT |
| 10 | * | - | 10% | - | |
| 11 | * | - | - | - | |
| 12 | * | - | - | - | |
| 13 | * | - | - | - | |
| 14 | * | - | - | - | |
| 15 | * | - | - | - | |
| 16 | * | - | - | - | |
| 17 | * | - | - | - | |
| 18 | * | - | - | - |
Rate-limited ICMPv6: hop 6, hop 7, hop 10 (loss between 5% and 95% across mtr cycles - the router replies but only sometimes).
tracepath -6
1?: [LOCALHOST] 0.026ms pmtu 1500
1: xe-0-0-13-178.gw01.ber01.as59645.net 0.566ms
1: xe-0-0-13-178.gw01.ber01.as59645.net 0.419ms
2: ae0-2453.cr10.ber01.lwlcom.net 5.164ms
3: retn.bcix.de 10.701ms asymm 5
4: RT.VSX.PDA.IT.retn.net 23.021ms asymm 5
5: GW-Aruba.retn.net 29.249ms asymm 13
6: no reply
7: er1-hu0-0-0-20.ip6.it1.aruba.it 30.254ms asymm 13
8: no reply
9: 2a0b:1d00:0:2201::1 28.092ms asymm 11
10: no reply
11: no reply
12: no reply
13: no reply
14: no reply
8: er2-hu0-0-0-21.ip6.it1.aruba.it 18098.461ms !H
Resume: pmtu 1500 From DE host (Düsseldorf) openRFC 4890 ✓
filter likely at: (none) · min PMTU on path: 1500
3/4
Echo small (56B) 26.7ms
4/4
Echo 1500B (DF) 26.9ms
no
Type 1 dest-unreach
-
TCP responds on
Path (traceroute + mtr + PTR)
| # | IP / PTR | RTT | mtr loss | AS | AS holder |
|---|---|---|---|---|---|
| 1 | xe-0-0-12-142.gw01.dus01.as59645.net 2a06:d1c1:100:d::1 | 0.2ms | 0%* | AS59645 | WYBT-NET - Tobias Fiebig, DE |
| 2 | eth1-0-12-h5594.edge5-dus1.bb.wiit.network 2001:4ba0:92f4:3::1 | 1.0ms | 0% | AS24961 | MYLOC-AS - WIIT AG, DE |
| 3 | lag13.agr3-dus3.bb.wiit.network 2001:4ba0:ffe9:7d::1 | 7.7ms | 0% | AS24961 | MYLOC-AS - WIIT AG, DE |
| 4 | lag11.core3-dus1.bb.wiit.network 2001:4ba0:ffe9:115::3 | 0.2ms | 0% | AS24961 | MYLOC-AS - WIIT AG, DE |
| 5 | lag0-vl1011.core1-fra-ix.bb.wiit.network 2001:4ba0:ffe9:8a::2 | 4.2ms | 0% | AS24961 | MYLOC-AS - WIIT AG, DE |
| 6 | lag0-vl1001.core1-nbg-ncd.bb.wiit.network 2001:4ba0:ffe9:103e::1 | 7.0ms | 0% | AS24961 | MYLOC-AS - WIIT AG, DE |
| 7 | lag0-vl6.core2-nbg-ncd.bb.wiit.network 2001:4ba0:ffe9:103b::1 | 6.8ms | 0% | AS24961 | MYLOC-AS - WIIT AG, DE |
| 8 | 2001:4ba0:ffe9:b8 | 9.5ms | 0% | - | |
| 9 | lag0-vl1009.core1-muc-eq3.bb.wiit.network 2001:4ba0:ffe9:a7::1 | 9.7ms | 0% | AS24961 | MYLOC-AS - WIIT AG, DE |
| 10 | lag0-vl1001.core1-pda-vsix.bb.wiit.network 2001:4ba0:ffe9:da::2 | 20.2ms | 0% | AS24961 | MYLOC-AS - WIIT AG, DE |
| 11 | lag0-vl1001.core1-mil-mix.bb.wiit.network 2001:4ba0:ffe9:db::2 | 20.3ms | 0% | AS24961 | MYLOC-AS - WIIT AG, DE |
| 12 | lag0-vl5.core3-mil-irid.bb.wiit.network 2001:4ba0:ffe9:9a::2 | 20.2ms | 0% | AS24961 | MYLOC-AS - WIIT AG, DE |
| 13 | * | - | - | - | |
| 14 | 2a0b:1d00::22 | 26.0ms | 0% | AS49709 | VIDEOBYTE - Videobyte S.r.l., IT |
| 15 | 2a0b:1d00:0:2201::1 | 28.2ms | 0% | AS49709 | VIDEOBYTE - Videobyte S.r.l., IT |
| 16 | * | - | 0% | - | |
| 17 | * | - | - | - | |
| 18 | * | - | - | - |
tracepath -6
1?: [LOCALHOST] 0.019ms pmtu 1500
1: xe-0-0-12-142.gw01.dus01.as59645.net 0.492ms
1: xe-0-0-12-142.gw01.dus01.as59645.net 0.357ms
2: eth1-0-12-h5594.edge5-dus1.bb.wiit.network 1.240ms
3: no reply
4: lag30.core3-dus1.bb.wiit.network 0.810ms
5: lag0-vl1011.core1-fra-ix.bb.wiit.network 4.749ms
6: lag0-vl1001.core1-nbg-ncd.bb.wiit.network 7.070ms
7: lag0-vl6.core2-nbg-ncd.bb.wiit.network 6.999ms
8: lag0-vl1006.core2-muc2.bb.wiit.network 16.318ms
9: lag0-vl1009.core1-muc-eq3.bb.wiit.network 10.154ms
10: lag0-vl1001.core1-pda-vsix.bb.wiit.network 20.790ms
11: lag0-vl1001.core1-mil-mix.bb.wiit.network 20.440ms asymm 9
12: lag0-vl5.core3-mil-irid.bb.wiit.network 20.235ms asymm 8
13: no reply
14: 2a0b:1d00::22 29.692ms asymm 9
15: 2a0b:1d00:0:2201::1 30.176ms asymm 10
16: no reply
17: no reply
18: no reply
Too many hops: pmtu 1500
Resume: pmtu 1500 From NL host (go6lab) all blocked
filter likely at: past AS31034 (ARUBA-ASN) · min PMTU on path: 1500
0/4
Echo small (56B) -
0/4
Echo 1500B (DF) -
no
Type 1 dest-unreach
-
TCP responds on
Path (traceroute + mtr + PTR)
| # | IP / PTR | RTT | mtr loss | AS | AS holder |
|---|---|---|---|---|---|
| 1 | 2a00:8642:42::2 | 0.6ms | 0% | AS203993 | GNA-DC1-AS - S.J.M. Steffann, NL |
| 2 | gw.friends.steffann.nl 2a00:8642:1000:f000::1 | 2.8ms | 0%* | AS203993 | GNA-DC1-AS - S.J.M. Steffann, NL |
| 3 | * | - | 0% | - | |
| 4 | 2a03:3f40::10:33 | 5.9ms | 0% | AS50673 | Serverius-as - Serverius Holding B.V., NL |
| 5 | ams-ix.retn.net 2001:7f8:1::a500:9002:1 | 5.7ms | 0% | - | NA |
| 6 | RT.VSX.PDA.IT.retn.net 2a02:2d8::57f5:e07e | 25.5ms | 0% | AS9002 | RETN-AS - RETN Limited, GB |
| 7 | GW-Aruba.retn.net 2a02:2d8:4:180e:232a::1 | 31.2ms | 0% | AS9002 | RETN-AS - RETN Limited, GB |
| 8 | * | - | 80% | - | |
| 9 | er1-hu0-0-0-21.ip6.it1.aruba.it 2a00:6d40:1::1:d2 | 28.2ms | 0% | AS31034 | ARUBA-ASN - Aruba S.p.A., IT |
| 10 | * | - | - | - | |
| 11 | * | - | - | - | |
| 12 | * | - | - | - | |
| 13 | * | - | - | - | |
| 14 | * | - | - | - | |
| 15 | * | - | - | - | |
| 16 | * | - | - | - | |
| 17 | * | - | - | - | |
| 18 | * | - | - | - |
Rate-limited ICMPv6: hop 8 (loss between 5% and 95% across mtr cycles - the router replies but only sometimes).
tracepath -6
1?: [LOCALHOST] 0.128ms pmtu 1500
1: 2a00:8642:42::2 2.186ms
1: 2a00:8642:42::2 4.988ms
2: gw.friends.steffann.nl 2.632ms
3: 2a00:1ca8:1::194 6.973ms
4: 2a03:3f40::10:33 6.629ms
5: ams-ix.retn.net 6.021ms asymm 7
6: RT.VSX.PDA.IT.retn.net 24.912ms
7: GW-Aruba.retn.net 29.949ms asymm 11
8: no reply
9: er1-hu0-0-0-20.ip6.it1.aruba.it 32.130ms asymm 10
10: no reply
11: no reply
12: no reply
13: no reply
14: no reply
15: no reply
16: no reply
17: no reply
18: no reply
Too many hops: pmtu 1500
Resume: pmtu 1500 From ITA host (Karsolink) open
filter likely at: (none) · min PMTU on path: 1500
0/4
Echo small (56B) -
0/4
Echo 1500B (DF) -
no
Type 1 dest-unreach
-
TCP responds on
Path (traceroute + mtr + PTR)
| # | IP / PTR | RTT | mtr loss | AS | AS holder |
|---|---|---|---|---|---|
| 1 | * | - | 0%* | - | |
| 2 | * | - | - | - | |
| 3 | 2a12:d8c0:101f:103::1 | 8.6ms | - | AS204471 | KARSOLINK - 2S Computers SRL, IT |
| 4 | * | - | 60% | - | |
| 5 | * | - | 30% | - | |
| 6 | er2-hu0-0-0-21.ip6.it1.aruba.it 2a00:6d40:1::1:d6 | 17.1ms | 0% | AS31034 | ARUBA-ASN - Aruba S.p.A., IT |
| 7 | * | - | - | - | |
| 8 | 2a0b:1d00:0:2201::1 | 16.7ms | 10% | AS49709 | VIDEOBYTE - Videobyte S.r.l., IT |
| 9 | * | - | 10% | - | |
| 10 | * | - | - | - | |
| 11 | * | - | - | - | |
| 12 | * | - | - | - | |
| 13 | * | - | - | - | |
| 14 | * | - | - | - | |
| 15 | * | - | - | - | |
| 16 | * | - | - | - | |
| 17 | * | - | - | - | |
| 18 | * | - | - | - |
Rate-limited ICMPv6: hop 4, hop 5, hop 8, hop 9 (loss between 5% and 95% across mtr cycles - the router replies but only sometimes).
tracepath -6
1?: [LOCALHOST] 0.030ms pmtu 1500
1: karsolink-01.net.karsolink.com 0.545ms
2: 2a12:d8c0:109f:121::a1 0.589ms
3: no reply
4: 2001:7f8:b9::24:1 19.716ms asymm 8
5: no reply
6: er1-hu0-0-0-21.ip6.it1.aruba.it 17.229ms asymm 7
7: no reply
8: 2a0b:1d00:0:2201::1 19.447ms asymm 6
9: no reply
10: no reply
11: no reply
12: no reply
13: no reply
14: no reply
9: er2-hu0-0-0-20.ip6.it1.aruba.it 18070.433ms !H
Resume: pmtu 1500 From SLO host (6connect) openRFC 4890 ✓
filter likely at: (none) · min PMTU on path: 1500
4/4
Echo small (56B) 15.9ms
0/4
Echo 1500B (DF) -
no
Type 1 dest-unreach
-
TCP responds on
Path (traceroute + mtr + PTR)
| # | IP / PTR | RTT | mtr loss | AS | AS holder |
|---|---|---|---|---|---|
| 1 | fw1-lju.6connect.com 2607:fae0:a000::2 | 0.3ms | 0%* | AS8038 | 6CONNECT - 6connect, Inc., US |
| 2 | * | - | - | - | |
| 3 | * | - | - | - | |
| 4 | 2a00:ee0:1:10::2 | 1.3ms | 0% | AS5603 | SIOL-NET - Telekom Slovenije, d.d., SI |
| 5 | 2a11:4142:2002 | 1.1ms | 0% | - | |
| 6 | 2620:107:4008:e85::2 | 8.1ms | 0% | - | NA |
| 7 | videobyte-v6.mix-it.net @MIX-IT / NAMEX / MINAP / TOP-IX / VSIX / EQUINIX-MILAN / BGPX-ROME / NAMEX-BARI / PCIX / DECIX-PALERMO 2001:7f8:b:100:1d1:a5d4:9709:219 | 10.6ms | 0% | - | NA |
| 8 | 2a0b:1d00::22 | 15.8ms | 0% | AS49709 | VIDEOBYTE - Videobyte S.r.l., IT |
| 9 | 2a0b:1d00:0:2201::1 | 17.1ms | 0% | AS49709 | VIDEOBYTE - Videobyte S.r.l., IT |
| 10 | * | - | 0% | - | |
| 11 | * | - | - | - | |
| 12 | * | - | - | - | |
| 13 | * | - | - | - | |
| 14 | * | - | - | - | |
| 15 | * | - | - | - | |
| 16 | * | - | - | - | |
| 17 | * | - | - | - | |
| 18 | * | - | - | - |
tracepath -6
1?: [LOCALHOST] 0.022ms pmtu 9000
1: fw1-lju.6connect.com 0.546ms
1: fw1-lju.6connect.com 0.580ms
2: no reply
3: no reply
4: 2a00:ee0:1:15::2 1.464ms asymm 3
5: 2a00:ee0:1:15::2 1.740ms pmtu 1500
5: 2a11:4142:2002:: 1.326ms asymm 6
6: 2620:107:4008:e85::2 8.510ms asymm 7
7: videobyte-v6.mix-it.net 10.723ms asymm 8
8: 2a0b:1d00::22 16.471ms asymm 9
9: 2a0b:1d00:0:2201::1 19.357ms asymm 10
10: no reply
11: no reply
12: no reply
13: no reply
14: no reply
15: no reply
16: no reply
17: no reply
18: no reply
Too many hops: pmtu 1500From SLO host (T-2) openRFC 4890 ✓
filter likely at: (none) · min PMTU on path: 1500
4/4
Echo small (56B) 23.4ms
4/4
Echo 1500B (DF) 27.1ms
no
Type 1 dest-unreach
-
TCP responds on
Path (traceroute + mtr + PTR)
| # | IP / PTR | RTT | mtr loss | AS | AS holder |
|---|---|---|---|---|---|
| 1 | * | - | - | - | |
| 2 | 2a01:260:1::225 | 9.3ms | 0%* | AS34779 | T-2-AS - T-2, d.o.o., SI |
| 3 | 2a01-260-1-1--9a.core6.t-2.net 2a01:260:1:1::9a | 2.4ms | 0%* | AS34779 | T-2-AS - T-2, d.o.o., SI |
| 4 | 2a01-260-1-1--38.core6.t-2.net 2a01:260:1:1::38 | 2.4ms | - | AS34779 | T-2-AS - T-2, d.o.o., SI |
| 5 | port-channel1.core1.zag2.he.net 2001:470:0:2ea::2 | 10.3ms | 0% | AS6939 | HURRICANE - Hurricane Electric LLC, US |
| 6 | port-channel1.core1.zag2.he.net 2001:470:0:2ea::2 | 9.8ms | - | AS6939 | HURRICANE - Hurricane Electric LLC, US |
| 7 | * | - | 80% | - | |
| 8 | cr1-hu0-0-0-3-702.ip6.it1.aruba.it 2a00:6d40:1::1:85 | 25.3ms | 90% | AS31034 | ARUBA-ASN - Aruba S.p.A., IT |
| 9 | er1-hu0-0-0-20.ip6.it1.aruba.it 2a00:6d40:1::1:ca | 24.7ms | 0% | AS31034 | ARUBA-ASN - Aruba S.p.A., IT |
| 10 | er2-hu0-0-0-21.ip6.it1.aruba.it 2a00:6d40:1::1:d6 | 24.1ms | - | AS31034 | ARUBA-ASN - Aruba S.p.A., IT |
| 11 | * | - | 0% | - | |
| 12 | * | - | 0% | - | |
| 13 | * | - | - | - | |
| 14 | * | - | - | - | |
| 15 | * | - | - | - | |
| 16 | * | - | - | - | |
| 17 | * | - | - | - | |
| 18 | * | - | - | - |
Rate-limited ICMPv6: hop 7, hop 8 (loss between 5% and 95% across mtr cycles - the router replies but only sometimes).
tracepath -6
1?: [LOCALHOST] 0.028ms pmtu 1500
1: 2a01:261:313:b814::1 1.128ms
1: 2a01:261:313:b814::1 1.005ms
2: 2a01:260:1::225 3.205ms
3: 2a01-260-1-1--9a.core6.t-2.net 3.242ms
4: 2a01-260-1-1--38.core6.t-2.net 2.985ms asymm 3
5: port-channel1.core1.zag2.he.net 10.923ms asymm 7
6: port-channel1.core1.zag2.he.net 11.294ms asymm 7
7: aruba-v6.mix-it.net 17.027ms
8: aruba-v6.mix-it.net 17.386ms asymm 7
9: er2-hu0-0-0-20.ip6.it1.aruba.it 24.503ms
10: er1-hu0-0-0-21.ip6.it1.aruba.it 25.024ms asymm 9
11: 2a0b:1d00:0:2201::1 24.116ms asymm 9
12: 2a0b:1d00:0:2201::1 24.762ms asymm 9
13: no reply
14: no reply
15: no reply
16: no reply
17: no reply
18: no reply
Too many hops: pmtu 1500
Resume: pmtu 1500