AS overview
Test target: 2a0c:dac0::1 · static prefix probe · address space: PA · prefixes announced: 1
prefix(es): 2a0c:dac0::/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 | ||
2a0c:dac0::1 | prb | ✓ | ✓ | refused | refused | ✓ | ✓ | ✓ | refused | refused | ✓ | ✓ | ✓ | refused | refused | ✓ | ✓ | ✓ | ? | ? | ✓ | ✓ | ✓ | refused | refused | ✓ | ✓ | ✓ | refused | refused | ✓ | ✓ | ✓ | refused | refused | ✓ |
RPKI & ASPA
1 of 1 prefix(es) covered by a valid ROA.
| Prefix | RPKI state | Reason | Covering VRP(s) |
|---|---|---|---|
2a0c:dac0::/29 | ✓ valid | matched VRP (correct origin, length within maxLength) | AS60943 /29 maxLen 29 (ripe) |
Random-IP probe (yarrp) into the AS' prefixes
We probed 35 arbitrary IPv6 address(es) inside AS60943's announced prefix(es). No router inside the prefix responded. The deepest visible hop was 2001:7f8:5f:ffff::82 at hop 11 - that router does not answer ICMPv6 Echo. This is not in AS60943'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
Type 2 honored. Forged ICMPv6 PTB (MTU=1280) was accepted by the destination's stack: the next 1500-byte Echo Reply arrived split into 2 fragments via the IPv6 Fragment Header.
method: ICMPv6 Echo + forged PTB, tested 2026-09-23T12:07:16Z
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 | 0.3ms | 0%* | AS60733 | PERKE-NET - ZORAN PEROVIC trading as Agencija Perke.NET, RS |
| 2 | 2001:7f8:1e::4 | 0.5ms | 0% | AS13004 | SOX - Serbian Open Exchange DOO, RS |
| 3 | 2001:7f8:30:0:2:1:0:9002 | 64.5ms | 0% | - | NA |
| 4 | RT.VSX.PDA.IT.retn.net 2a02:2d8::57f5:e07e | 20.7ms | 0% | AS9002 | RETN-AS - RETN Limited, GB |
| 5 | 2a0c:dac0::1 | 39.5ms | 0% | AS60943 | FIBERLAND-AS - FIBERLAND SRLS, IT |
tracepath -6
1?: [LOCALHOST] 0.016ms pmtu 1500
1: _gateway 0.374ms
1: _gateway 0.424ms
2: 2001:7f8:1e::4 0.817ms
3: 2001:7f8:30:0:2:1:0:9002 18.615ms
4: RT.VSX.PDA.IT.retn.net 20.998ms
5: 2a0c:dac0::1 21.234ms reached
Resume: pmtu 1500 hops 5 back 5 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 | 0.2ms | 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 | 34.3ms | 0% | AS9002 | RETN-AS - RETN Limited, GB |
| 5 | 2a0c:dac0::1 | 35.8ms | 0% | AS60943 | FIBERLAND-AS - FIBERLAND SRLS, IT |
tracepath -6
1?: [LOCALHOST] 0.019ms pmtu 1500
1: xe-0-0-13-178.gw01.ber01.as59645.net 0.694ms
1: xe-0-0-13-178.gw01.ber01.as59645.net 0.464ms
2: ae0-2453.cr10.ber01.lwlcom.net 0.809ms
3: retn.bcix.de 10.693ms asymm 5
4: RT.VSX.PDA.IT.retn.net 22.969ms asymm 5
5: 2a0c:dac0::1 24.114ms reached
Resume: pmtu 1500 hops 5 back 12 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 | * | - | 60% | - | |
| 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 | 10.1ms | 0% | - | |
| 9 | lag0-vl1009.core1-muc-eq3.bb.wiit.network 2001:4ba0:ffe9:a7::1 | 10.0ms | 0% | AS24961 | MYLOC-AS - WIIT AG, DE |
| 10 | lag0-vl1001.core1-pda-vsix.bb.wiit.network 2001:4ba0:ffe9:da::2 | 26.5ms | 0% | AS24961 | MYLOC-AS - WIIT AG, DE |
| 11 | 2a0c:dac0::1 | 20.3ms | 0% | AS60943 | FIBERLAND-AS - FIBERLAND SRLS, IT |
Rate-limited ICMPv6: hop 3 (loss between 5% and 95% across mtr cycles - the router replies but only sometimes).
tracepath -6
1?: [LOCALHOST] 0.019ms pmtu 1500
1: xe-0-0-12-142.gw01.dus01.as59645.net 0.308ms
1: xe-0-0-12-142.gw01.dus01.as59645.net 0.307ms
2: eth1-0-12-h5594.edge5-dus1.bb.wiit.network 1.447ms
3: no reply
4: lag30.core3-dus1.bb.wiit.network 0.437ms
5: lag0-vl1011.core1-fra-ix.bb.wiit.network 4.457ms
6: lag0-vl1001.core1-nbg-ncd.bb.wiit.network 7.216ms
7: lag0-vl6.core2-nbg-ncd.bb.wiit.network 6.994ms
8: lag0-vl1006.core2-muc2.bb.wiit.network 36.335ms
9: lag0-vl1009.core1-muc-eq3.bb.wiit.network 9.796ms
10: lag0-vl1001.core1-pda-vsix.bb.wiit.network 20.455ms
11: 2a0c:dac0::1 20.747ms reached
Resume: pmtu 1500 hops 11 back 11 From NL host (go6lab) openRFC 4890 ✓
filter likely at: (none) · min PMTU on path: 1500
Path (traceroute + mtr + PTR)
| # | IP / PTR | RTT | mtr loss | AS | AS holder |
|---|---|---|---|---|---|
| 1 | 2a00:8642:42::2 | 0.9ms | 0% | AS203993 | GNA-DC1-AS - S.J.M. Steffann, NL |
| 2 | * | - | 0%* | - | |
| 3 | ccr2-ccr1.dc1.nogalliance.org 2a00:8642:dc1:2::b | 1.9ms | 0% | AS203993 | GNA-DC1-AS - S.J.M. Steffann, NL |
| 4 | ams-ix.retn.net 2001:7f8:1::a500:9002:1 | 8.1ms | 0% | - | NA |
| 5 | RT.VSX.PDA.IT.retn.net 2a02:2d8::57f5:e07e | 23.6ms | 0% | AS9002 | RETN-AS - RETN Limited, GB |
| 6 | 2a0c:dac0::1 | 24.2ms | 0% | AS60943 | FIBERLAND-AS - FIBERLAND SRLS, IT |
tracepath -6
1?: [LOCALHOST] 0.112ms pmtu 1500
1: 2a00:8642:42::2 1.027ms
1: 2a00:8642:42::2 1.440ms
2: gw.friends.steffann.nl 4.500ms
3: ccr2-ccr1.dc1.nogalliance.org 2.513ms asymm 2
4: ams-ix.retn.net 4.586ms asymm 7
5: RT.VSX.PDA.IT.retn.net 21.758ms asymm 6
6: 2a0c:dac0::1 25.252ms reached
Resume: pmtu 1500 hops 6 back 7 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 | * | - | - | - | |
| 2 | * | - | 0%* | - | |
| 3 | * | - | - | - | |
| 4 | 2a0c:dac0::1 | 10.7ms | 0% | AS60943 | FIBERLAND-AS - FIBERLAND SRLS, IT |
tracepath -6
1?: [LOCALHOST] 0.030ms pmtu 1500
1: no reply
2: 2a12:d8c0:109f:121::a1 0.620ms
3: no reply
4: 2a0c:dac0::1 8.976ms reached
Resume: pmtu 1500 hops 4 back 4 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 | 0.3ms | 0%* | AS8038 | 6CONNECT - 6connect, Inc., US |
| 2 | * | - | - | - | |
| 3 | 2a03:a100:0:201:1::1 | 0.8ms | 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 | 2.2ms | 50% | AS6939 | HURRICANE - Hurricane Electric LLC, US |
| 5 | * | - | - | - | |
| 6 | port-channel1.core1.zag2.he.net 2001:470:0:2ea::2 | 4.1ms | 40% | AS6939 | HURRICANE - Hurricane Electric LLC, US |
| 7 | * | - | - | - | |
| 8 | 2a0c:dac0::1 | 23.1ms | 0% | AS60943 | FIBERLAND-AS - FIBERLAND SRLS, IT |
Rate-limited ICMPv6: hop 4, hop 6 (loss between 5% and 95% across mtr cycles - the router replies but only sometimes).
tracepath -6
1?: [LOCALHOST] 0.014ms pmtu 9000
1: fw1-lju.6connect.com 0.603ms
1: fw1-lju.6connect.com 0.565ms
2: no reply
3: 2a03:a100:0:201:1::1 1.079ms
4: 2a03:a100:0:201:1::1 1.049ms pmtu 1500
4: no reply
5: no reply
6: port-channel1.core1.zag2.he.net 4.522ms
7: no reply
8: 2a0c:dac0::1 32.186ms reached
Resume: pmtu 1500 hops 8 back 17 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 | 2a01:261:313:b814::1 | 0.4ms | 0%* | AS34779 | T-2-AS - T-2, d.o.o., SI |
| 2 | 2a01:260:1::225 | 2.1ms | 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 | 1.7ms | 0%* | AS34779 | T-2-AS - T-2, d.o.o., SI |
| 4 | 2a01-260-1-1--39.core6.t-2.net 2a01:260:1:1::39 | 2.0ms | 0%* | AS34779 | T-2-AS - T-2, d.o.o., SI |
| 5 | hurricane-electric.nikhef.nlsix.net 2001:7f8:13::a500:6939:1 | 35.1ms | 0% | - | NA |
| 6 | be7.core2.fra2.he.net 2001:470:e:18::2 | 37.8ms | 50% | AS6939 | HURRICANE - Hurricane Electric LLC, US |
| 7 | * | - | 40% | - | |
| 8 | be10.core1.zrh2.he.net 2001:470:e:153::2 | 53.5ms | 0% | AS6939 | HURRICANE - Hurricane Electric LLC, US |
| 9 | * | - | 0% | - | |
| 10 | * | - | - | - | |
| 11 | 2a0c:dac0::1 | 37.7ms | 0% | AS60943 | FIBERLAND-AS - FIBERLAND SRLS, IT |
Rate-limited ICMPv6: hop 6, 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: 2a01:261:313:b814::1 0.849ms
1: 2a01:261:313:b814::1 0.961ms
2: 2a01:260:1::225 2.356ms
3: 2a01-260-1-1--9c.core6.t-2.net 2.427ms
4: hurricane-electric.nikhef.nlsix.net 36.260ms
5: be7.core2.fra2.he.net 44.262ms
6: be7.core2.fra2.he.net 43.841ms asymm 5
7: be10.core1.zrh2.he.net 52.481ms asymm 8
8: be10.core1.zrh2.he.net 55.545ms
9: be1.core1.mil2.he.net 37.367ms asymm 7
10: 2a0c:dac0::1 39.574ms reached
Resume: pmtu 1500 hops 10 back 7