AS overview
Test target: 2a0d:ac00:1000::1 · static prefix probe · address space: PA · prefixes announced: 5
prefix(es): 2a0d:ac00:1000::/48, 2a0d:ac00::/48, 2a0d:ac00:dc01::/48, 2a0d:ac00:6::/48, 2a0d:ac00:1006::/48
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 | ||
2a0d:ac00:1000::1 | prb | ✓ | ✓ | refused | refused | - | ✓ | ✓ | refused | refused | - | ✓ | ✓ | refused | refused | - | ✓ | ✗ | ? | ? | - | ✓ | ✓ | refused | refused | - | ✓ | ✓ | refused | refused | - | ✓ | ✓ | refused | refused | - |
VIX / AAIX / SAIX / TIROL-IX / ERA-IX peering
Not an VIX / AAIX / SAIX / TIROL-IX / ERA-IX member, but our traceroute path crosses the VIX / AAIX / SAIX / TIROL-IX / ERA-IX LAN from SLO host (T-2) - reached via an VIX / AAIX / SAIX / TIROL-IX / ERA-IX-resident transit operator.
RPKI & ASPA
5 of 5 prefix(es) covered by a valid ROA.
| Prefix | RPKI state | Reason | Covering VRP(s) |
|---|---|---|---|
2a0d:ac00:1000::/48 | ✓ valid | matched VRP (correct origin, length within maxLength) | AS205202 /48 maxLen 48 (ripe) |
2a0d:ac00::/48 | ✓ valid | matched VRP (correct origin, length within maxLength) | AS205202 /48 maxLen 48 (ripe) |
2a0d:ac00:dc01::/48 | ✓ valid | matched VRP (correct origin, length within maxLength) | AS205202 /48 maxLen 48 (ripe) |
2a0d:ac00:6::/48 | ✓ valid | matched VRP (correct origin, length within maxLength) | AS205202 /48 maxLen 48 (ripe) |
2a0d:ac00:1006::/48 | ✓ valid | matched VRP (correct origin, length within maxLength) | AS205202 /48 maxLen 48 (ripe) |
Random-IP probe (yarrp) into the AS' prefixes
We probed 70 arbitrary IPv6 address(es) inside AS205202's announced prefix(es). No router inside the prefix responded. The deepest visible hop was 2a02:8384:11:219::2 at hop 16 - that router answers ICMPv6 Echo. This is not in AS205202'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): 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 | 2a0d:ac00:1000::1 | icmp6-echo | honored | 2026-09-24T13:33:29Z |
| berlin | 2a06:d1c1:10b::cccc | 2a0d:ac00:1000::1 | icmp6-echo | honored | 2026-09-24T13:33:32Z |
| duseldorf | 2a06:d1c1:10d::aaaa | 2a0d:ac00:1000::1 | icmp6-echo | honored | 2026-09-24T13:33:35Z |
| go6lab | 2a00:8642:42::75 | 2a0d:ac00:1000::1 | icmp6-echo | no_echo | 2026-09-24T13:34:16Z |
| karsolink | 2a12:d8c0:105a:9001::a154 | 2a0d:ac00:1000::1 | icmp6-echo | honored | 2026-09-24T13:33:14Z |
| odin | 2607:fae0:a000::42 | 2a0d:ac00:1000::1 | icmp6-echo | honored | 2026-09-24T13:33:34Z |
| t2 | 2a01:261:313:b814:2a0:98ff:fe5b:13e4 | 2a0d:ac00:1000::1 | icmp6-echo | honored | 2026-09-24T13:33:33Z |
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: timed outtls→ 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): natural Echo Reply at 1500B was already split into IPv6 fragments without our PTB intervention -- the destination's stack has a cached path MTU below 1500B from a previously-honored ICMPv6 Type 2, which is itself evidence that this destination honors PTB on this path.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): AS8412, AS6830, AS6939.
- From belgrade (open/Type-2=honored) the path enters an opaque hop at hop 8; from berlin (open/Type-2=honored) the same hop is in AS8412. Last common AS: AS8412. 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 15; from duseldorf (open/Type-2=honored) the same hop is in AS8412. Last common AS: AS8412. The disagreement is most likely rooted in one of those two transit ASes.
- From belgrade (open/Type-2=honored) the path enters AS8412 at hop 5; from go6lab (echo_only/Type-2=no_echo) the same hop is in AS6830. Last common AS: AS8412. 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 11; from karsolink (open/Type-2=honored) the same hop is in AS8412. Last common AS: AS8412. The disagreement is most likely rooted in one of those two transit ASes.
- From belgrade (open/Type-2=honored) the path enters AS8412 at hop 5; from odin (open/Type-2=honored) the same hop is in AS6939. Last common AS: AS8412. 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 8; from t2 (open/Type-2=honored) the same hop is in AS8412. Last common AS: AS8412. 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 15; from duseldorf (open/Type-2=honored) the same hop is in AS8412. Last common AS: AS8412. 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 10; from go6lab (echo_only/Type-2=no_echo) the same hop is in AS8412. Last common AS: AS8412. 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 11; from karsolink (open/Type-2=honored) the same hop is in AS8412. Last common AS: AS8412. The disagreement is most likely rooted in one of those two transit ASes.
- From berlin (open/Type-2=honored) the path enters AS8412 at hop 8; from odin (open/Type-2=honored) the same hop is in an opaque hop. Last common AS: AS8412. The disagreement is most likely rooted in one of those two transit ASes.
- From duseldorf (open/Type-2=honored) the path enters AS8412 at hop 15; from go6lab (echo_only/Type-2=no_echo) the same hop is in an opaque hop. Last common AS: AS8412. The disagreement is most likely rooted in one of those two transit ASes.
- From duseldorf (open/Type-2=honored) the path enters AS8412 at hop 15; from karsolink (open/Type-2=honored) the same hop is in an opaque hop. Last common AS: AS8412. The disagreement is most likely rooted in one of those two transit ASes.
- From duseldorf (open/Type-2=honored) the path enters AS8412 at hop 15; from odin (open/Type-2=honored) the same hop is in an opaque hop. Last common AS: AS8412. The disagreement is most likely rooted in one of those two transit ASes.
- From duseldorf (open/Type-2=honored) the path enters AS8412 at hop 15; from t2 (open/Type-2=honored) the same hop is in an opaque hop. Last common AS: AS8412. The disagreement is most likely rooted in one of those two transit ASes.
- From go6lab (echo_only/Type-2=no_echo) the path enters an opaque hop at hop 11; from karsolink (open/Type-2=honored) the same hop is in AS8412. Last common AS: AS8412. The disagreement is most likely rooted in one of those two transit ASes.
- From go6lab (echo_only/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: AS8412. The disagreement is most likely rooted in one of those two transit ASes.
- From go6lab (echo_only/Type-2=no_echo) the path enters AS8412 at hop 10; from t2 (open/Type-2=honored) the same hop is in an opaque hop. Last common AS: AS8412. The disagreement is most likely rooted in one of those two transit ASes.
- From karsolink (open/Type-2=honored) the path enters AS8412 at hop 11; from odin (open/Type-2=honored) the same hop is in an opaque hop. Last common AS: AS8412. The disagreement is most likely rooted in one of those two transit ASes.
- From karsolink (open/Type-2=honored) the path enters AS8412 at hop 11; from t2 (open/Type-2=honored) the same hop is in an opaque hop. Last common AS: AS8412. 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 8; from t2 (open/Type-2=honored) the same hop is in AS8412. Last common AS: AS8412. 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
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
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 | 0.2ms | 0% | AS13004 | SOX - Serbian Open Exchange DOO, RS |
| 3 | 2001:7f8:1e:8::3d | 0.4ms | 0% | AS13004 | SOX - Serbian Open Exchange DOO, RS |
| 4 | 2001:67c:128c::699 | 16.0ms | 0% | - | NA |
| 5 | 2a02-8384-0011-0219-0000-0000-0000-0002.static.v6.upcbusiness.at 2a02:8384:11:219::2 | 44.7ms | 0% | AS8412 | TMA - T-Mobile Austria GmbH, AT |
tracepath -6
1?: [LOCALHOST] 0.026ms pmtu 1500
1: _gateway 0.958ms
1: _gateway 0.877ms
2: sox-pn.sox.rs 0.763ms
3: 2001:7f8:1e:8::3d 0.718ms asymm 2
4: 2001:67c:128c::699 16.588ms
5: 2a02-8384-0011-0219-0000-0000-0000-0002.static.v6.upcbusiness.at 43.235ms reached
Resume: pmtu 1500 hops 5 back 9 From DE host (Berlin) openRFC 4890 ✓
filter likely at: (none) · min PMTU on path: 1500
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 | 0.4ms | 0%* | AS59645 | WYBT-NET - Tobias Fiebig, DE |
| 2 | ae0-2453.cr10.ber01.lwlcom.net 2a06:d1c0::dead:beef:1c02 | 0.5ms | 0%* | AS59645 | WYBT-NET - Tobias Fiebig, DE |
| 3 | 2003:0:f00::6dc | 2.0ms | 0% | AS3320 | DTAG - Deutsche Telekom AG, DE |
| 4 | * | - | - | - | |
| 5 | * | - | - | - | |
| 6 | * | - | - | - | |
| 7 | * | - | - | - | |
| 8 | 2a02-8384-0011-0219-0000-0000-0000-0002.static.v6.upcbusiness.at 2a02:8384:11:219::2 | 24.9ms | 0% | AS8412 | TMA - T-Mobile Austria GmbH, AT |
tracepath -6
1?: [LOCALHOST] 0.031ms pmtu 1500
1: xe-0-0-13-178.gw01.ber01.as59645.net 0.708ms
1: xe-0-0-13-178.gw01.ber01.as59645.net 0.690ms
2: ae0-2453.cr10.ber01.lwlcom.net 1.202ms
3: 2003:0:f00::6dc 1.630ms
4: no reply
5: no reply
6: no reply
7: no reply
8: 2a02-8384-0011-0219-0000-0000-0000-0002.static.v6.upcbusiness.at 25.773ms reached
Resume: pmtu 1500 hops 8 back 16 From DE host (Düsseldorf) openRFC 4890 ✓
filter likely at: (none) · min PMTU on path: 1500
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 | 4.2ms | 0% | AS24961 | MYLOC-AS - WIIT AG, DE |
| 6 | lag0-vl1001.core1-nbg-ncd.bb.wiit.network 2001:4ba0:ffe9:103e::1 | 6.9ms | 0% | AS24961 | MYLOC-AS - WIIT AG, DE |
| 7 | lag0-vl6.core2-nbg-ncd.bb.wiit.network 2001:4ba0:ffe9:103b::1 | 7.1ms | 0% | AS24961 | MYLOC-AS - WIIT AG, DE |
| 8 | 2001:4ba0:ffe9:b8 | 9.5ms | 0% | - | |
| 9 | lag0-vl2.core1-muc2.bb.wiit.network 2001:4ba0:ffe9:1026::1 | 9.4ms | 0% | AS24961 | MYLOC-AS - WIIT AG, DE |
| 10 | * | - | 50% | - | |
| 11 | * | - | - | - | |
| 12 | * | - | - | - | |
| 13 | * | - | - | - | |
| 14 | * | - | - | - | |
| 15 | 2a02-8384-0011-0219-0000-0000-0000-0002.static.v6.upcbusiness.at 2a02:8384:11:219::2 | 20.2ms | 0% | AS8412 | TMA - T-Mobile Austria GmbH, AT |
Rate-limited ICMPv6: hop 10 (loss between 5% and 95% across mtr cycles - the router replies but only sometimes).
tracepath -6
1?: [LOCALHOST] 0.016ms pmtu 1500
1: xe-0-0-12-142.gw01.dus01.as59645.net 0.326ms
1: xe-0-0-12-142.gw01.dus01.as59645.net 0.293ms
2: eth1-0-12-h5594.edge5-dus1.bb.wiit.network 1.240ms
3: no reply
4: lag30.core3-dus1.bb.wiit.network 0.384ms
5: lag0-vl1011.core1-fra-ix.bb.wiit.network 5.898ms
6: lag0-vl1001.core1-nbg-ncd.bb.wiit.network 7.249ms
7: lag0-vl6.core2-nbg-ncd.bb.wiit.network 7.000ms
8: lag0-vl1006.core2-muc2.bb.wiit.network 13.504ms
9: lag0-vl2.core1-muc2.bb.wiit.network 9.459ms
10: no reply
11: no reply
12: no reply
13: no reply
14: no reply
15: 2a02-8384-0011-0219-0000-0000-0000-0002.static.v6.upcbusiness.at 20.533ms reached
Resume: pmtu 1500 hops 15 back 15 From NL host (go6lab) echo onlyRFC 4890 ✗
filter likely at: past AS8412 (TMA) · min PMTU on path: 1500
Path (traceroute + mtr + PTR)
| # | IP / PTR | RTT | mtr loss | AS | AS holder |
|---|---|---|---|---|---|
| 1 | 2a00:8642:42::2 | 1.0ms | 0% | AS203993 | GNA-DC1-AS - S.J.M. Steffann, NL |
| 2 | gw.friends.steffann.nl 2a00:8642:1000:f000::1 | 2.2ms | 0%* | AS203993 | GNA-DC1-AS - S.J.M. Steffann, NL |
| 3 | 2a00:1ca8:1::194 | 2.8ms | 10% | AS50673 | Serverius-as - Serverius Holding B.V., NL |
| 4 | 2a03:3f40::10:41 | 3.5ms | 0% | AS50673 | Serverius-as - Serverius Holding B.V., NL |
| 5 | 2001:730:2209:7::1 | 5.4ms | 0% | AS6830 | LibertyGlobal - Liberty Global Europe Holding B.V., NL |
| 6 | 2001:730:2800::5474:8001 | 30.3ms | 0% | AS6830 | LibertyGlobal - Liberty Global Europe Holding B.V., NL |
| 7 | * | - | - | - | |
| 8 | 2a02-8386-0000-0000-0000-0002-0005-0000.static.v6.upcbusiness.at 2a02:8386::2:5:0 | 75.6ms | 0% | - | NA |
| 9 | 2a02-8386-0000-0000-0000-0002-0034-0001.static.v6.upcbusiness.at 2a02:8386::2:34:1 | 36.3ms | 20% | - | NA |
| 10 | 2a02-8384-0011-0219-0000-0000-0000-0002.static.v6.upcbusiness.at 2a02:8384:11:219::2 | 35.5ms | 0% | AS8412 | TMA - T-Mobile Austria GmbH, AT |
Rate-limited ICMPv6: hop 3, hop 9 (loss between 5% and 95% across mtr cycles - the router replies but only sometimes).
tracepath -6
1?: [LOCALHOST] 0.031ms pmtu 1500
1: 2a00:8642:42::2 2.866ms
1: 2a00:8642:42::2 1.719ms
2: gw.friends.steffann.nl 3.952ms
3: 2a00:1ca8:1::194 4.802ms
4: 2a03:3f40::10:41 5.782ms
5: no reply
6: 2001:730:2800::5474:8001 29.529ms asymm 8
7: 2a02-8383-0000-1000-0000-0000-000b-0000.static.v6.upcbusiness.at 33.583ms asymm 9
8: 2a02-8386-0000-0000-0000-0002-0005-0000.static.v6.upcbusiness.at 37.161ms asymm 12
9: 2a02-8386-0000-0000-0000-0002-0034-0001.static.v6.upcbusiness.at 37.371ms asymm 11
10: 2a02-8384-0011-0219-0000-0000-0000-0002.static.v6.upcbusiness.at 34.655ms reached
Resume: pmtu 1500 hops 10 back 12 From ITA host (Karsolink) openRFC 4890 ✓
filter likely at: (none) · min PMTU on path: 1500
Path (traceroute + mtr + PTR)
| # | IP / PTR | RTT | mtr loss | AS | AS holder |
|---|---|---|---|---|---|
| 1 | * | - | 0%* | - | |
| 2 | * | - | 0%* | - | |
| 3 | * | - | 0% | - | |
| 4 | 2a03:b020:1:51::a | 9.9ms | 0% | AS41327 | FIBERTELECOM-AS - Fiber Telecom S.p.A., IT |
| 5 | * | - | 70% | - | |
| 6 | * | - | 90% | - | |
| 7 | * | - | 90% | - | |
| 8 | * | - | - | - | |
| 9 | * | - | - | - | |
| 10 | * | - | - | - | |
| 11 | 2a02-8384-0011-0219-0000-0000-0000-0002.static.v6.upcbusiness.at 2a02:8384:11:219::2 | 29.6ms | - | AS8412 | TMA - T-Mobile Austria GmbH, AT |
Rate-limited ICMPv6: hop 5, hop 6, hop 7 (loss between 5% and 95% across mtr cycles - the router replies but only sometimes).
tracepath -6
1?: [LOCALHOST] 0.029ms pmtu 1500
1: no reply
2: 2a12:d8c0:109f:121::a1 0.756ms
3: 2a12:d8c0:109f:106::a2 3.629ms
4: ae8-202.RT.CLR.MIL.IT.retn.net 8.075ms asymm 5
5: 2001:1900:5:2:2::5b1d 20.045ms asymm 8
6: lo0.0.edge5.Berlin1.level3.net 43.819ms asymm 8
7: no reply
8: no reply
9: no reply
10: no reply
11: 2a02-8384-0011-0219-0000-0000-0000-0002.static.v6.upcbusiness.at 30.279ms reached
Resume: pmtu 1500 hops 11 back 10 From SLO host (6connect) openRFC 4890 ✓
filter likely at: (none) · min PMTU on path: 1500
Path (traceroute + mtr + PTR)
| # | IP / PTR | RTT | mtr loss | AS | AS holder |
|---|---|---|---|---|---|
| 1 | fw1-lju.6connect.com 2607:fae0:a000::2 | 0.4ms | 0%* | AS8038 | 6CONNECT - 6connect, Inc., US |
| 2 | * | - | 0%* | - | |
| 3 | 2a03:a100:0:201:1::1 | 0.8ms | 0% | AS56635 | XENYA - XENYA inzeniring, proizvodnja in trgovina, d.o.o. Ljubljana, SI |
| 4 | * | - | 80% | - | |
| 5 | 100ge0-0-0-5.core1.vie1.he.net 2001:470:0:578::1 | 8.8ms | - | AS6939 | HURRICANE - Hurricane Electric LLC, US |
| 6 | 2a02-8383-0000-1000-0000-0000-0006-0000.static.v6.upcbusiness.at 2a02:8383:0:1000::6:0 | 7.4ms | 0% | AS8412 | TMA - T-Mobile Austria GmbH, AT |
| 7 | * | - | - | - | |
| 8 | * | - | - | - | |
| 9 | 2a02-8384-0011-0219-0000-0000-0000-0002.static.v6.upcbusiness.at 2a02:8384:11:219::2 | 10.8ms | 0% | AS8412 | TMA - T-Mobile Austria GmbH, AT |
Rate-limited ICMPv6: hop 4 (loss between 5% and 95% across mtr cycles - the router replies but only sometimes).
tracepath -6
1?: [LOCALHOST] 0.023ms pmtu 9000
1: fw1-lju.6connect.com 0.662ms
1: fw1-lju.6connect.com 0.609ms
2: no reply
3: 2a03:a100:0:201:1::1 0.952ms
4: 2a03:a100:0:201:1::1 0.914ms pmtu 1500
4: no reply
5: no reply
6: 2a02-8383-0000-1000-0000-0000-0006-0000.static.v6.upcbusiness.at 6.838ms
7: no reply
8: no reply
9: 2a02-8384-0011-0219-0000-0000-0000-0002.static.v6.upcbusiness.at 11.102ms reached
Resume: pmtu 1500 hops 9 back 9 From SLO host (T-2) openRFC 4890 ✓
filter likely at: (none) · min PMTU on path: 1500
Path (traceroute + mtr + PTR)
| # | IP / PTR | RTT | mtr loss | AS | AS holder |
|---|---|---|---|---|---|
| 1 | * | - | 0%* | - | |
| 2 | 2a01:260:1::225 | 5.7ms | 0%* | AS34779 | T-2-AS - T-2, d.o.o., SI |
| 3 | 2a01-260-1-1--9c.core6.t-2.net 2a01:260:1:1::9c | 2.7ms | 0%* | AS34779 | T-2-AS - T-2, d.o.o., SI |
| 4 | 2a01-260-1-1--25.core6.t-2.net 2a01:260:1:1::25 | 5.1ms | 0%* | AS34779 | T-2-AS - T-2, d.o.o., SI |
| 5 | atwre21p401.as8412.net @VIX / AAIX / SAIX / TIROL-IX / ERA-IX 2001:7f8:30:0:1:1:0:8412 | 8.7ms | 0% | - | NA |
| 6 | atwre21p401.as8412.net @VIX / AAIX / SAIX / TIROL-IX / ERA-IX 2001:7f8:30:0:1:1:0:8412 | 8.6ms | - | - | NA |
| 7 | * | - | - | - | |
| 8 | 2a02-8384-0011-0219-0000-0000-0000-0002.static.v6.upcbusiness.at 2a02:8384:11:219::2 | 12.8ms | 0% | AS8412 | TMA - T-Mobile Austria GmbH, AT |
tracepath -6
1?: [LOCALHOST] 0.028ms pmtu 1500
1: no reply
2: 2a01:260:1::225 3.734ms
3: 2a01-260-1-1--9a.core6.t-2.net 2.153ms
4: 2a01-260-1-1--25.core6.t-2.net 5.982ms
5: 2a01-260-1-1--c.core6.t-2.net 5.392ms asymm 4
6: atwre21p401.as8412.net 9.795ms asymm 8
7: no reply
8: 2a02-8384-0011-0219-0000-0000-0000-0002.static.v6.upcbusiness.at 14.133ms reached
Resume: pmtu 1500 hops 8 back 9