AS overview
Test target: 2a10:2980::1 · static prefix probe · address space: unknown · prefixes announced: 3
prefix(es): 2a10:2980::/32, 2a10:2981::/32, 2a10:2980::/29
Targets & per-vantage-point probe results (1 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 | ||
2a10:2980::1 | prb | ✓ | ✓ | refused | refused | ✓ | ✓ | ✓ | refused | refused | ✓ | ✓ | ✓ | refused | refused | ✓ | ✗ | ✗ | ? | ? | - | ✓ | ✓ | refused | refused | ✓ | ✓ | ✓ | refused | refused | ✓ | ✓ | ✓ | refused | refused | ✓ |
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 2021-12-30. IPv6 LAN: 2001:7f8:b:100:1d1:a520:9591:144. Locations: -.
RPKI & ASPA
3 of 3 prefix(es) covered by a valid ROA.
| Prefix | RPKI state | Reason | Covering VRP(s) |
|---|---|---|---|
2a10:2980::/32 | ✓ valid | matched VRP (correct origin, length within maxLength) | AS209591 /29 maxLen 32 (ripe) |
2a10:2981::/32 | ✓ valid | matched VRP (correct origin, length within maxLength) | AS209591 /29 maxLen 32 (ripe) |
2a10:2980::/29 | ✓ valid | matched VRP (correct origin, length within maxLength) | AS209591 /29 maxLen 32 (ripe) |
Random-IP probe (yarrp) into the AS' prefixes
At least one router inside AS209591's announced prefix replied during the random-target probe. Hop(s): 2a10:2980:1001:fa7:923:6af0:4ec5:a242, 2a10:2980::1, 2a10:2980::2. These are candidate targets for direct testing.
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): Type 2 honored. Forged PTB accepted; next response shrunk. (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 | 2a10:2980::1 | icmp6-echo | honored | 2026-09-23T12:08:23Z |
| berlin | 2a06:d1c1:10b::cccc | 2a10:2980::1 | icmp6-echo | honored | 2026-09-23T12:08:20Z |
| duseldorf | 2a06:d1c1:10d::aaaa | 2a10:2980::1 | icmp6-echo | honored | 2026-09-23T12:08:20Z |
| go6lab | 2a00:8642:42::75 | 2a10:2980::1 | icmp6-echo | no_echo | 2026-09-23T12:10:07Z |
| karsolink | 2a12:d8c0:105a:9001::a154 | 2a10:2980::1 | icmp6-echo | honored | 2026-09-23T12:08:22Z |
| odin | 2607:fae0:a000::42 | 2a10:2980::1 | icmp6-echo | honored | 2026-09-23T12:08:20Z |
| t2 | 2a01:261:313:b814:2a0:98ff:fe5b:13e4 | 2a10:2980::1 | icmp6-echo | honored | 2026-09-23T12:08:21Z |
Attempt log (belgrade):
icmp6-echo→ honored (honored by fragmenting its reply into 2 via the IPv6 Fragment Header, rather than resizing)dns-tcp→ no_tcp: connect failed: [Errno 111] Connection refusedtls→ 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→ no_tcp: connect failed: [Errno 111] Connection refusedtls→ 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→ no_tcp: connect failed: [Errno 111] Connection refusedtls→ 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: [Errno 101] Network is unreachabletls→ no_tcp: TLS connect failedhttp→ no_tcp: tcp/80 not open
Attempt log (karsolink):
icmp6-echo→ honored (honored by fragmenting its reply into 2 via the IPv6 Fragment Header, rather than resizing)dns-tcp→ no_tcp: connect failed: [Errno 111] Connection refusedtls→ 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→ no_tcp: connect failed: [Errno 111] Connection refusedtls→ 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→ no_tcp: connect failed: [Errno 111] Connection refusedtls→ 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→ verdicthonored - 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 | no_tcp | no_tcp | no_tcp |
| berlin | honored | no_tcp | no_tcp | no_tcp |
| duseldorf | honored | no_tcp | no_tcp | no_tcp |
| go6lab | no_echo | no_tcp | no_tcp | no_tcp |
| karsolink | honored | no_tcp | no_tcp | no_tcp |
| odin | honored | no_tcp | no_tcp | no_tcp |
| t2 | honored | no_tcp | 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): AS209591, AS6939, AS174.
- From belgrade (open/Type-2=honored) the path enters an opaque hop at hop 14; from berlin (open/Type-2=honored) the same hop is in AS209591. Last common AS: AS209591. 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 13; from duseldorf (open/Type-2=honored) the same hop is in AS209591. Last common AS: AS209591. The disagreement is most likely rooted in one of those two transit ASes.
- From belgrade (open/Type-2=honored) the path enters AS209591 at hop 8; from karsolink (open/Type-2=honored) the same hop is in an opaque hop. Last common AS: AS209591. 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 9; from odin (open/Type-2=honored) the same hop is in AS209591. Last common AS: AS209591. The disagreement is most likely rooted in one of those two transit ASes.
- From belgrade (open/Type-2=honored) the path enters AS209591 at hop 8; from t2 (open/Type-2=honored) the same hop is in AS6939. Last common AS: AS209591. The disagreement is most likely rooted in one of those two transit ASes.
- From berlin (open/Type-2=honored) the path enters AS209591 at hop 14; from duseldorf (open/Type-2=honored) the same hop is in an opaque hop. Last common AS: AS209591. The disagreement is most likely rooted in one of those two transit ASes.
- From berlin (open/Type-2=honored) the path enters AS209591 at hop 14; from karsolink (open/Type-2=honored) the same hop is in an opaque hop. Last common AS: AS209591. The disagreement is most likely rooted in one of those two transit ASes.
- From berlin (open/Type-2=honored) the path enters AS209591 at hop 14; from odin (open/Type-2=honored) the same hop is in an opaque hop. Last common AS: AS209591. The disagreement is most likely rooted in one of those two transit ASes.
- From berlin (open/Type-2=honored) the path enters AS209591 at hop 14; from t2 (open/Type-2=honored) the same hop is in an opaque hop. Last common AS: AS209591. The disagreement is most likely rooted in one of those two transit ASes.
- From duseldorf (open/Type-2=honored) the path enters AS209591 at hop 13; from karsolink (open/Type-2=honored) the same hop is in an opaque hop. Last common AS: AS209591. The disagreement is most likely rooted in one of those two transit ASes.
- From duseldorf (open/Type-2=honored) the path enters AS209591 at hop 13; from odin (open/Type-2=honored) the same hop is in an opaque hop. Last common AS: AS209591. The disagreement is most likely rooted in one of those two transit ASes.
- From duseldorf (open/Type-2=honored) the path enters AS209591 at hop 13; from t2 (open/Type-2=honored) the same hop is in an opaque hop. Last common AS: AS209591. The disagreement is most likely rooted in one of those two transit ASes.
- From go6lab (all_blocked/Type-2=no_echo) the path enters AS174 at hop 5; from karsolink (open/Type-2=honored) the same hop is in AS209591. 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 AS50673 at hop 3; from odin (open/Type-2=honored) the same hop is in AS56635. Last common AS: no shared transit. The disagreement is most likely rooted in one of those two transit ASes.
- From karsolink (open/Type-2=honored) the path enters an opaque hop at hop 9; from odin (open/Type-2=honored) the same hop is in AS209591. Last common AS: AS209591. The disagreement is most likely rooted in one of those two transit ASes.
- From karsolink (open/Type-2=honored) the path enters an opaque hop at hop 12; from t2 (open/Type-2=honored) the same hop is in AS209591. Last common AS: AS209591. The disagreement is most likely rooted in one of those two transit ASes.
- From odin (open/Type-2=honored) the path enters an opaque hop at hop 7; from t2 (open/Type-2=honored) the same hop is in AS6939. Last common AS: AS209591. 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) 39.5ms
4/4
Echo 1500B (DF) 39.4ms
yes
Type 1 dest-unreach
443,80
TCP responds on
Path (traceroute + mtr + PTR)
| # | IP / PTR | RTT | mtr loss | AS | AS holder |
|---|---|---|---|---|---|
| 1 | 2a09:ab81::1 | 0.4ms | 0%* | AS60733 | PERKE-NET - ZORAN PEROVIC trading as Agencija Perke.NET, RS |
| 2 | sox-pn.sox.rs 2001:7f8:1e:8::3a | 0.4ms | 0% | AS13004 | SOX - Serbian Open Exchange DOO, RS |
| 3 | e0-33.core2.beg1.he.net 2001:470:1:6e5::1 | 1.0ms | 0% | AS6939 | HURRICANE - Hurricane Electric LLC, US |
| 4 | e0-34.core2.bts1.he.net 2001:470:0:33f::2 | 8.4ms | 0% | AS6939 | HURRICANE - Hurricane Electric LLC, US |
| 5 | 100ge0-0-0-2.core1.vie1.he.net 2001:470:0:412::1 | 11.1ms | 80% | AS6939 | HURRICANE - Hurricane Electric LLC, US |
| 6 | * | - | - | - | |
| 7 | 2001:7f8:5f:ffff::55 | 39.2ms | 0% | - | NA |
| 8 | 2a10:2980::1 | 43.9ms | 0% | AS209591 | FLYNETWORK - Fly Network Srl, IT |
Rate-limited ICMPv6: hop 5 (loss between 5% and 95% across mtr cycles - the router replies but only sometimes).
tracepath -6
1?: [LOCALHOST] 0.018ms pmtu 1500
1: _gateway 0.523ms
1: _gateway 0.477ms
2: sox-pn.sox.rs 0.487ms
3: e0-33.core2.beg1.he.net 1.457ms
4: e0-34.core2.bts1.he.net 8.716ms
5: 100ge0-0-0-2.core1.vie1.he.net 11.305ms
6: no reply
7: 2001:7f8:5f:ffff::55 39.454ms asymm 5
8: 2a10:2980::1 44.305ms reached
Resume: pmtu 1500 hops 8 back 6 From DE host (Berlin) openRFC 4890 ✓
filter likely at: (none) · min PMTU on path: 1500
4/4
Echo small (56B) 41.5ms
4/4
Echo 1500B (DF) 41.6ms
yes
Type 1 dest-unreach
443,80
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 | xe-0-0-12-2412.gw01.dus01.as59645.net 2a06:d1c0::dead:beef:401 | 8.3ms | 0% | AS59645 | WYBT-NET - Tobias Fiebig, DE |
| 3 | eth1-0-12-h5594.edge5-dus1.bb.wiit.network 2001:4ba0:92f4:3::1 | 10.4ms | 0% | AS24961 | MYLOC-AS - WIIT AG, DE |
| 4 | * | - | - | - | |
| 5 | lag11.core3-dus1.bb.wiit.network 2001:4ba0:ffe9:115::3 | 8.2ms | 0% | AS24961 | MYLOC-AS - WIIT AG, DE |
| 6 | lag0-vl1011.core1-fra-ix.bb.wiit.network 2001:4ba0:ffe9:8a::2 | 12.5ms | 0% | AS24961 | MYLOC-AS - WIIT AG, DE |
| 7 | lag0-vl1001.core1-nbg-ncd.bb.wiit.network 2001:4ba0:ffe9:103e::1 | 15.1ms | 0% | AS24961 | MYLOC-AS - WIIT AG, DE |
| 8 | lag0-vl6.core2-nbg-ncd.bb.wiit.network 2001:4ba0:ffe9:103b::1 | 15.0ms | 0% | AS24961 | MYLOC-AS - WIIT AG, DE |
| 9 | 2001:4ba0:ffe9:b8 | 17.5ms | 0% | - | |
| 10 | lag0-vl1009.core1-muc-eq3.bb.wiit.network 2001:4ba0:ffe9:a7::1 | 17.8ms | 0% | AS24961 | MYLOC-AS - WIIT AG, DE |
| 11 | lag0-vl1001.core1-pda-vsix.bb.wiit.network 2001:4ba0:ffe9:da::2 | 28.4ms | 0% | AS24961 | MYLOC-AS - WIIT AG, DE |
| 12 | lag0-vl1001.core1-mil-mix.bb.wiit.network 2001:4ba0:ffe9:db::2 | 28.4ms | 0% | AS24961 | MYLOC-AS - WIIT AG, DE |
| 13 | flynetwork-AS209591.mix-it.net @MIX-IT / NAMEX / MINAP / TOP-IX / VSIX / EQUINIX-MILAN / BGPX-ROME / NAMEX-BARI / PCIX / DECIX-PALERMO 2001:7f8:b:100:1d1:a520:9591:144 | 37.0ms | 10% | - | NA |
| 14 | 2a10:2980::1 | 41.7ms | 0% | AS209591 | FLYNETWORK - Fly Network Srl, IT |
Rate-limited ICMPv6: hop 13 (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 0.810ms
1: xe-0-0-13-178.gw01.ber01.as59645.net 0.748ms
2: xe-0-0-12-2412.gw01.dus01.as59645.net 8.720ms
3: eth1-0-12-h5594.edge5-dus1.bb.wiit.network 9.733ms
4: no reply
5: lag30.core3-dus1.bb.wiit.network 8.703ms
6: lag0-vl1011.core1-fra-ix.bb.wiit.network 12.827ms
7: lag0-vl1001.core1-nbg-ncd.bb.wiit.network 15.261ms
8: lag0-vl6.core2-nbg-ncd.bb.wiit.network 15.449ms
9: lag0-vl1006.core2-muc2.bb.wiit.network 18.250ms
10: lag0-vl1009.core1-muc-eq3.bb.wiit.network 18.361ms
11: lag0-vl1001.core1-pda-vsix.bb.wiit.network 28.775ms
12: lag0-vl1001.core1-mil-mix.bb.wiit.network 50.246ms asymm 10
13: flynetwork-AS209591.mix-it.net 37.397ms asymm 11
14: 2a10:2980::1 42.272ms reached
Resume: pmtu 1500 hops 14 back 12 From DE host (Düsseldorf) openRFC 4890 ✓
filter likely at: (none) · min PMTU on path: 1500
4/4
Echo small (56B) 33.4ms
4/4
Echo 1500B (DF) 33.4ms
yes
Type 1 dest-unreach
443,80
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 | * | - | - | - | |
| 4 | lag30.core3-dus1.bb.wiit.network 2001:4ba0:ffe9:109::2 | 0.2ms | 0% | AS24961 | MYLOC-AS - WIIT AG, DE |
| 5 | lag0-vl1011.core1-fra-ix.bb.wiit.network 2001:4ba0:ffe9:8a::2 | 4.3ms | 0% | AS24961 | MYLOC-AS - WIIT AG, DE |
| 6 | lag0-vl1001.core1-nbg-ncd.bb.wiit.network 2001:4ba0:ffe9:103e::1 | 6.7ms | 0% | AS24961 | MYLOC-AS - WIIT AG, DE |
| 7 | lag0-vl6.core2-nbg-ncd.bb.wiit.network 2001:4ba0:ffe9:103b::1 | 7.0ms | 0% | AS24961 | MYLOC-AS - WIIT AG, DE |
| 8 | 2001:4ba0:ffe9:b8 | 14.5ms | 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 | 20.3ms | 0% | AS24961 | MYLOC-AS - WIIT AG, DE |
| 11 | lag0-vl1001.core1-mil-mix.bb.wiit.network 2001:4ba0:ffe9:db::2 | 20.2ms | 0% | AS24961 | MYLOC-AS - WIIT AG, DE |
| 12 | flynetwork-AS209591.mix-it.net @MIX-IT / NAMEX / MINAP / TOP-IX / VSIX / EQUINIX-MILAN / BGPX-ROME / NAMEX-BARI / PCIX / DECIX-PALERMO 2001:7f8:b:100:1d1:a520:9591:144 | 28.7ms | 0% | - | NA |
| 13 | 2a10:2980::1 | 33.3ms | 0% | AS209591 | FLYNETWORK - Fly Network Srl, IT |
tracepath -6
1?: [LOCALHOST] 0.014ms pmtu 1500
1: xe-0-0-12-142.gw01.dus01.as59645.net 0.406ms
1: xe-0-0-12-142.gw01.dus01.as59645.net 0.501ms
2: eth1-0-12-h5594.edge5-dus1.bb.wiit.network 1.125ms
3: no reply
4: lag30.core3-dus1.bb.wiit.network 0.391ms
5: lag0-vl1011.core1-fra-ix.bb.wiit.network 4.498ms
6: lag0-vl1001.core1-nbg-ncd.bb.wiit.network 7.060ms
7: lag0-vl6.core2-nbg-ncd.bb.wiit.network 7.092ms
8: lag0-vl1006.core2-muc2.bb.wiit.network 13.837ms
9: lag0-vl1009.core1-muc-eq3.bb.wiit.network 10.102ms
10: lag0-vl1001.core1-pda-vsix.bb.wiit.network 20.516ms
11: lag0-vl1001.core1-mil-mix.bb.wiit.network 20.383ms asymm 9
12: flynetwork-AS209591.mix-it.net 29.038ms asymm 10
13: 2a10:2980::1 33.901ms reached
Resume: pmtu 1500 hops 13 back 11 From NL host (go6lab) all blocked
filter likely at: past AS174 (COGENT-174) · 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 | 1.5ms | 0% | AS203993 | GNA-DC1-AS - S.J.M. Steffann, NL |
| 2 | gw.friends.steffann.nl 2a00:8642:1000:f000::1 | 9.9ms | 0%* | AS203993 | GNA-DC1-AS - S.J.M. Steffann, NL |
| 3 | 2a00:1ca8:1::194 | 9.9ms | 0% | AS50673 | Serverius-as - Serverius Holding B.V., NL |
| 4 | 2a03:3f40::10:41 | 4.0ms | 0% | AS50673 | Serverius-as - Serverius Holding B.V., NL |
| 5 | 2001:978:2:40::3:1 | 6.3ms | 0% | AS174 | COGENT-174 - Cogent Communications, LLC, US |
tracepath -6
1?: [LOCALHOST] 0.040ms pmtu 1500
1: 2a00:8642:42::2 2.686ms
1: 2a00:8642:42::2 3.236ms
2: gw.friends.steffann.nl 2.740ms
3: 2a00:1ca8:1::194 6.674ms
4: 2a03:3f40::10:41 3.625ms
5: 2001:978:2:40::3:1 6.858ms !N
Resume: pmtu 1500 From ITA host (Karsolink) openRFC 4890 ✓
filter likely at: (none) · min PMTU on path: 1500
4/4
Echo small (56B) 24.9ms
3/4
Echo 1500B (DF) 24.9ms
yes
Type 1 dest-unreach
443,80
TCP responds on
Path (traceroute + mtr + PTR)
| # | IP / PTR | RTT | mtr loss | AS | AS holder |
|---|---|---|---|---|---|
| 1 | * | - | - | - | |
| 2 | * | - | - | - | |
| 3 | * | - | - | - | |
| 4 | 2001:7f8:b9::42:1 | 19.1ms | 0% | - | NA |
| 5 | 2a10:2980::1 | 24.2ms | 0% | AS209591 | FLYNETWORK - Fly Network Srl, IT |
tracepath -6
1?: [LOCALHOST] 0.047ms pmtu 1500
1: karsolink-01.net.karsolink.com 1.017ms
1: karsolink-01.net.karsolink.com 0.751ms
2: 2a12:d8c0:109f:121::a1 0.755ms
3: no reply
4: 2001:7f8:b9::42:1 19.305ms
5: 2a10:2980::1 24.964ms reached
Resume: pmtu 1500 hops 5 back 5 From SLO host (6connect) openRFC 4890 ✓
filter likely at: (none) · min PMTU on path: 1500
4/4
Echo small (56B) 29.3ms
3/4
Echo 1500B (DF) 29.4ms
yes
Type 1 dest-unreach
443,80
TCP responds on
Path (traceroute + mtr + PTR)
| # | IP / PTR | RTT | mtr loss | AS | AS holder |
|---|---|---|---|---|---|
| 1 | fw1-lju.6connect.com 2607:fae0:a000::2 | 0.5ms | 0%* | AS8038 | 6CONNECT - 6connect, Inc., US |
| 2 | * | - | - | - | |
| 3 | 2a03:a100:0:201:1::1 | 0.9ms | 0% | AS56635 | XENYA - XENYA inzeniring, proizvodnja in trgovina, d.o.o. Ljubljana, SI |
| 4 | e0-1.core1.lju1.he.net 2001:470:1:5be::1 | 2.6ms | 0% | AS6939 | HURRICANE - Hurricane Electric LLC, US |
| 5 | * | - | - | - | |
| 6 | port-channel1.core1.zag2.he.net 2001:470:0:2ea::2 | 4.0ms | 0% | AS6939 | HURRICANE - Hurricane Electric LLC, US |
| 7 | * | - | - | - | |
| 8 | 2001:7f8:5f:ffff::55 | 29.0ms | 0% | - | NA |
| 9 | 2a10:2980::1 | 29.3ms | 0% | AS209591 | FLYNETWORK - Fly Network Srl, IT |
tracepath -6
1?: [LOCALHOST] 0.033ms pmtu 9000
1: fw1-lju.6connect.com 0.624ms
1: fw1-lju.6connect.com 0.470ms
2: no reply
3: 2a03:a100:0:201:1::1 1.128ms
4: 2a03:a100:0:201:1::1 0.901ms pmtu 1500
4: e0-1.core1.lju1.he.net 2.118ms
5: no reply
6: port-channel1.core1.zag2.he.net 3.909ms
7: no reply
8: 2001:7f8:5f:ffff::55 29.197ms
9: 2a10:2980::1 29.777ms reached
Resume: pmtu 1500 hops 9 back 9 From SLO host (T-2) openRFC 4890 ✓
filter likely at: (none) · min PMTU on path: 1500
4/4
Echo small (56B) 62.6ms
4/4
Echo 1500B (DF) 53.8ms
yes
Type 1 dest-unreach
443,80
TCP responds on
Path (traceroute + mtr + PTR)
| # | IP / PTR | RTT | mtr loss | AS | AS holder |
|---|---|---|---|---|---|
| 1 | * | - | 0%* | - | |
| 2 | 2a01:260:1::225 | 6.3ms | 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 | 2.2ms | 0%* | AS34779 | T-2-AS - T-2, d.o.o., SI |
| 4 | hurricane-electric.nikhef.nlsix.net 2001:7f8:13::a500:6939:1 | 33.6ms | 0%* | - | NA |
| 5 | hurricane-electric.nikhef.nlsix.net 2001:7f8:13::a500:6939:1 | 33.5ms | 0% | - | NA |
| 6 | be3.core4.fra1.he.net 2001:470:e:5a::2 | 49.2ms | 0% | AS6939 | HURRICANE - Hurricane Electric LLC, US |
| 7 | be10.core1.zrh2.he.net 2001:470:e:153::2 | 51.5ms | 10% | AS6939 | HURRICANE - Hurricane Electric LLC, US |
| 8 | be1.core1.mil2.he.net 2001:470:e:dd::1 | 36.4ms | 0% | AS6939 | HURRICANE - Hurricane Electric LLC, US |
| 9 | * | - | 0% | - | |
| 10 | 2001:7f8:5f:ffff::55 | 48.4ms | - | - | NA |
| 11 | 2001:7f8:5f:ffff::55 | 48.9ms | 0% | - | NA |
| 12 | 2a10:2980::1 | 53.7ms | 0% | AS209591 | FLYNETWORK - Fly Network Srl, IT |
Rate-limited ICMPv6: hop 7 (loss between 5% and 95% across mtr cycles - the router replies but only sometimes).
tracepath -6
1?: [LOCALHOST] 0.026ms pmtu 1500
1: no reply
2: 2a01:260:1::225 7.673ms
3: 2a01-260-1-1--9c.core6.t-2.net 3.761ms
4: 2a01-260-1-1--39.core6.t-2.net 2.560ms asymm 3
5: be1.core2.fra2.he.net 38.888ms
6: be3.core4.fra1.he.net 43.893ms asymm 7
7: be10.core1.zrh2.he.net 57.096ms asymm 8
8: be10.core1.zrh2.he.net 53.474ms
9: no reply
10: flynetwork-AS209591.mix-it.net 44.766ms asymm 7
11: flynetwork-AS209591.mix-it.net 43.971ms asymm 7
12: 2a10:2980::1 59.091ms reached
Resume: pmtu 1500 hops 12 back 8