AS overview
Test target: 2a0b:4040::1 · static prefix probe · address space: PA · prefixes announced: 1
prefix(es): 2a0b:4040::/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 | ||
2a0b:4040::1 | prb | ✓ | ✓ | ? | ? | - | ✓ | ✓ | ? | ? | - | ✓ | ✓ | ? | ? | - | ✓ | ✓ | ? | ? | - | ✓ | ✓ | ? | ? | - | ✓ | ✓ | ? | ? | - | ✓ | ✓ | ? | ? | - |
SOX peering
Not an SOX member, but our traceroute path crosses the SOX LAN from SRB host (SOX, Belgrade) - reached via an SOX-resident transit operator.
RPKI & ASPA
1 of 1 prefix(es) covered by a valid ROA.
| Prefix | RPKI state | Reason | Covering VRP(s) |
|---|---|---|---|
2a0b:4040::/29 | ✓ valid | matched VRP (correct origin, length within maxLength) | AS202676 /29 maxLen 48 (ripe) |
Random-IP probe (yarrp) into the AS' prefixes
We probed 35 arbitrary IPv6 address(es) inside AS202676's announced prefix(es). No router inside the prefix responded. The deepest visible hop was 2a02:2608:ffff:ffff::2c at hop 9 - that router answers ICMPv6 Echo. This is not in AS202676's announced prefix; operationally it's the AS-edge / peering interface (often on a SOX 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 2026-09-23T11:09:06Z
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 @SOX | 0.6ms | 0% | AS13004 | Serbian Open eXchange |
| 3 | * | - | - | - | |
| 4 | 2a02:2608:ffff:ffff::be | 32.4ms | 0% | AS44306 | Omonia - OMONIA d.o.o., HR |
| 5 | 2a02:2608:ffff:ffff::bd | 32.4ms | 0% | AS44306 | Omonia - OMONIA d.o.o., HR |
| 6 | * | - | 0% | - | |
| 7 | * | - | - | - | |
| 8 | * | - | - | - | |
| 9 | * | - | - | - | |
| 10 | * | - | - | - | |
| 11 | * | - | - | - | |
| 12 | * | - | - | - | |
| 13 | * | - | - | - | |
| 14 | * | - | - | - | |
| 15 | * | - | - | - |
tracepath -6
1?: [LOCALHOST] 0.021ms pmtu 1500
1: _gateway 0.439ms
1: _gateway 0.556ms
2: 2001:7f8:1e::4 0.522ms
3: no reply
4: 2a02:2608:ffff:ffff::be 32.770ms asymm 9
5: 2a02:2608:ffff:ffff::bd 32.565ms asymm 8
6: no reply
7: no reply
8: no reply
9: no reply
10: no reply
11: no reply
12: no reply
13: no reply
14: no reply
15: 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
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 | ae0-40.cr10.muc02.lwlcom.net 2a00:c380:b200:230::178 | 11.5ms | 0% | AS50629 | LWLCOM - LWLcom GmbH, DE |
| 4 | ae0-10.cr10.muc01.lwlcom.net 2a00:c380:b200:230::177 | 11.3ms | 0% | AS50629 | LWLCOM - LWLcom GmbH, DE |
| 5 | vix.omonia.hr 2001:7f8:30:0:2:1:4:4306 | 24.5ms | 0% | - | NA |
| 6 | 2a02:2608:ffff:ffff::be | 28.8ms | 0% | AS44306 | Omonia - OMONIA d.o.o., HR |
| 7 | 2a02:2608:ffff:ffff::bd | 28.6ms | 0% | AS44306 | Omonia - OMONIA d.o.o., HR |
| 8 | * | - | 0% | - | |
| 9 | * | - | - | - | |
| 10 | * | - | - | - | |
| 11 | * | - | - | - | |
| 12 | * | - | - | - | |
| 13 | * | - | - | - | |
| 14 | * | - | - | - | |
| 15 | * | - | - | - |
tracepath -6
1?: [LOCALHOST] 0.023ms pmtu 1500
1: xe-0-0-13-178.gw01.ber01.as59645.net 0.383ms
1: xe-0-0-13-178.gw01.ber01.as59645.net 0.383ms
2: ae0-2453.cr10.ber01.lwlcom.net 0.719ms
3: ae0-40.cr10.muc02.lwlcom.net 11.744ms
4: ae0-10.cr10.muc01.lwlcom.net 11.722ms
5: vix.omonia.hr 24.765ms asymm 10
6: 2a02:2608:ffff:ffff::be 29.759ms asymm 10
7: 2a02:2608:ffff:ffff::bd 28.914ms asymm 9
8: no reply
9: no reply
10: no reply
11: no reply
12: no reply
13: no reply
14: no reply
15: no reply
Too many hops: pmtu 1500
Resume: pmtu 1500 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 | 2.9ms | 0% | AS24961 | MYLOC-AS - WIIT AG, DE |
| 3 | lag10-h5f01.agr4-dus1.bb.wiit.network 2001:4ba0:ffe9:7c::1 | 50.2ms | 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 | lag8.core1-dus-ix.bb.wiit.network 2001:4ba0:ffe9:8::2 | 0.4ms | 0% | AS24961 | MYLOC-AS - WIIT AG, DE |
| 6 | de-cix.omonia.net 2001:7f8::ad12:0:1 | 15.8ms | 0% | - | NA |
| 7 | 2a02:2608:ffff:ffff::2c | 21.5ms | 0% | AS44306 | Omonia - OMONIA d.o.o., HR |
| 8 | * | - | 0% | - | |
| 9 | * | - | - | - | |
| 10 | * | - | - | - | |
| 11 | * | - | - | - | |
| 12 | * | - | - | - | |
| 13 | * | - | - | - | |
| 14 | * | - | - | - | |
| 15 | * | - | - | - |
tracepath -6
1?: [LOCALHOST] 0.037ms pmtu 1500
1: xe-0-0-12-142.gw01.dus01.as59645.net 0.482ms
1: xe-0-0-12-142.gw01.dus01.as59645.net 0.393ms
2: eth1-0-12-h5594.edge5-dus1.bb.wiit.network 1.280ms
3: no reply
4: lag11.core3-dus1.bb.wiit.network 0.543ms
5: lag2.core1-dus-ix.bb.wiit.network 0.584ms
6: de-cix.omonia.net 16.006ms asymm 12
7: 2a02:2608:ffff:ffff::2c 21.922ms asymm 8
8: no reply
9: no reply
10: no reply
11: no reply
12: no reply
13: no reply
14: no reply
15: no reply
Too many hops: pmtu 1500
Resume: pmtu 1500 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 | 4.3ms | 0% | AS203993 | GNA-DC1-AS - S.J.M. Steffann, NL |
| 2 | * | - | 0%* | - | |
| 3 | 2a00:1ca8:1::194 | 4.0ms | 0% | AS50673 | Serverius-as - Serverius Holding B.V., NL |
| 4 | 2a03:3f40::10:41 | 4.5ms | 0% | AS50673 | Serverius-as - Serverius Holding B.V., NL |
| 5 | 2001:730:2209:7::1 | 8.5ms | 0% | AS6830 | LibertyGlobal - Liberty Global Europe Holding B.V., NL |
| 6 | 2001:730:2200::5474:8007 | 7.3ms | 0% | AS6830 | LibertyGlobal - Liberty Global Europe Holding B.V., NL |
| 7 | 2001:730:2206:23::d52e:c04d | 32.2ms | 0% | AS6830 | LibertyGlobal - Liberty Global Europe Holding B.V., NL |
| 8 | 2a02:2608:ffff:ffff::92 | 30.4ms | 0% | AS44306 | Omonia - OMONIA d.o.o., HR |
| 9 | 2a02:2608:ffff:ffff::2c | 36.2ms | 0% | AS44306 | Omonia - OMONIA d.o.o., HR |
| 10 | * | - | 0% | - | |
| 11 | * | - | - | - | |
| 12 | * | - | - | - | |
| 13 | * | - | - | - | |
| 14 | * | - | - | - | |
| 15 | * | - | - | - |
tracepath -6
1?: [LOCALHOST] 0.063ms pmtu 1500
1: 2a00:8642:42::2 4.154ms
1: 2a00:8642:42::2 1.954ms
2: gw.friends.steffann.nl 3.688ms
3: 2a00:1ca8:1::194 4.107ms
4: 2a03:3f40::10:41 5.931ms
5: no reply
6: no reply
7: 2001:730:2206:23::d52e:c04d 34.193ms asymm 15
8: 2a02:2608:ffff:ffff::92 33.479ms asymm 15
9: 2a02:2608:ffff:ffff::2c 37.818ms asymm 14
10: no reply
11: no reply
12: no reply
13: no reply
14: no reply
15: no reply
Too many hops: pmtu 1500
Resume: pmtu 1500 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 | 2a12:d8c0:109f:106::a2 | 3.0ms | 90% | AS204471 | KARSOLINK - 2S Computers SRL, IT |
| 4 | 2a02:2d8:1:b80d:232a | 7.6ms | 0% | - | |
| 5 | RT.IRX.VIE.AT.retn.net 2a02:2d8::57f5:e0af | 15.4ms | 0% | AS9002 | RETN-AS - RETN Limited, GB |
| 6 | * | - | - | - | |
| 7 | 2a02:2608:ffff:ffff::be | 27.6ms | 0% | AS44306 | Omonia - OMONIA d.o.o., HR |
| 8 | 2a02:2608:ffff:ffff::bd | 27.6ms | 0% | AS44306 | Omonia - OMONIA d.o.o., HR |
| 9 | * | - | 0% | - | |
| 10 | * | - | - | - | |
| 11 | * | - | - | - | |
| 12 | * | - | - | - | |
| 13 | * | - | - | - | |
| 14 | * | - | - | - | |
| 15 | * | - | - | - |
Rate-limited ICMPv6: hop 3 (loss between 5% and 95% across mtr cycles - the router replies but only sometimes).
tracepath -6
1?: [LOCALHOST] 0.043ms pmtu 1500
1: karsolink-01.net.karsolink.com 0.549ms
1: karsolink-01.net.karsolink.com 0.587ms
2: 2a12:d8c0:109f:121::a1 0.632ms
3: 2a12:d8c0:101f:103::1 8.841ms
4: ae8-202.rt.clr.mil.it.retn.net 8.277ms asymm 5
5: rt.irx.vie.at.retn.net 11.742ms
6: no reply
7: 2a02:2608:ffff:ffff::be 32.129ms asymm 10
8: 2a02:2608:ffff:ffff::bd 32.347ms asymm 9
9: no reply
10: no reply
11: no reply
12: no reply
13: no reply
14: no reply
15: no reply
Too many hops: pmtu 1500
Resume: pmtu 1500 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 | * | - | 0%* | - | |
| 3 | 2a00:ee1:800:9::1 | 1.4ms | 0% | AS5603 | SIOL-NET - Telekom Slovenije, d.d., SI |
| 4 | 2a00:ee0:1:10::2 | 1.0ms | 0% | AS5603 | SIOL-NET - Telekom Slovenije, d.d., SI |
| 5 | de-cix.omonia.net 2001:7f8::ad12:0:1 | 49.7ms | 0% | - | NA |
| 6 | 2a02:2608:ffff:ffff::2c | 47.0ms | 0% | AS44306 | Omonia - OMONIA d.o.o., HR |
| 7 | * | - | 0% | - | |
| 8 | * | - | - | - | |
| 9 | * | - | - | - | |
| 10 | * | - | - | - | |
| 11 | * | - | - | - | |
| 12 | * | - | - | - | |
| 13 | * | - | - | - | |
| 14 | * | - | - | - | |
| 15 | * | - | - | - |
tracepath -6
1?: [LOCALHOST] 0.026ms pmtu 9000
1: fw1-lju.6connect.com 0.711ms
1: fw1-lju.6connect.com 0.507ms
2: no reply
3: 2a00:ee1:800:9::1 2.350ms
4: 2a00:ee0:1:15::2 1.351ms asymm 3
5: 2a00:ee0:1:15::2 1.645ms pmtu 1500
5: de-cix.omonia.net 49.860ms asymm 10
6: 2a02:2608:ffff:ffff::2c 47.857ms asymm 9
7: no reply
8: no reply
9: no reply
10: no reply
11: no reply
12: no reply
13: no reply
14: no reply
15: no reply
Too many hops: pmtu 1500From 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 | 2.5ms | 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 | 1.7ms | 0%* | AS34779 | T-2-AS - T-2, d.o.o., SI |
| 4 | 2001:7f8:28::64:0 | 5.4ms | 0%* | - | NA |
| 5 | 2001:7f8:28::64:0 | 5.2ms | 0% | - | NA |
| 6 | 2a02:2608:ffff:ffff:185:151:132:231 | 9.4ms | 0% | AS44306 | Omonia - OMONIA d.o.o., HR |
| 7 | * | - | 0% | - | |
| 8 | * | - | - | - | |
| 9 | * | - | - | - | |
| 10 | * | - | - | - | |
| 11 | * | - | - | - | |
| 12 | * | - | - | - | |
| 13 | * | - | - | - | |
| 14 | * | - | - | - | |
| 15 | * | - | - | - |
tracepath -6
1?: [LOCALHOST] 0.029ms pmtu 1500
1: 2a01:261:313:b814::1 0.772ms
1: 2a01:261:313:b814::1 0.676ms
2: 2a01:260:1::225 2.855ms
3: 2a01-260-1-1--9c.core6.t-2.net 2.586ms
4: 2001:7f8:28::64:0 5.440ms
5: 2a02:2608:ffff:ffff:185:151:132:231 10.653ms
6: 2a02:2608:ffff:ffff:185:151:132:231 9.885ms asymm 5
7: no reply
8: no reply
9: no reply
10: no reply
11: no reply
12: no reply
13: no reply
14: no reply
15: no reply
Too many hops: pmtu 1500
Resume: pmtu 1500