AS overview
Test target: 2a0d:b287:dad0::1 · static prefix probe · address space: mixed · prefixes announced: 4
prefix(es): 2a0d:b287:dad0::/44, 2a14:7586:f100::/40, 2a14:7586:ff00::/40, 2a14:7586:f000::/40
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:b287:dad0::1 | prb | ✓ | ✓ | refused | refused | ✓ | ✓ | ✓ | refused | refused | ✓ | ✓ | ✓ | refused | refused | ✓ | ✓ | ✓ | ? | ? | ✓ | ✓ | ✓ | refused | refused | ✓ | ✓ | ✓ | refused | refused | ✓ | ✓ | ✓ | refused | refused | ✓ |
RPKI & ASPA
1 of 4 prefix(es) covered by a valid ROA, 3 invalid.
| Prefix | RPKI state | Reason | Covering VRP(s) |
|---|---|---|---|
2a0d:b287:dad0::/44 | ✓ valid | matched VRP (correct origin, length within maxLength) | AS208437 /44 maxLen 44 (ripe); AS41720 /29 maxLen 29 (ripe) |
2a14:7586:f100::/40 | ✗ invalid | maxLength too short for the announced prefix | AS208437 /36 maxLen 36 (ripe) |
2a14:7586:ff00::/40 | ✗ invalid | maxLength too short for the announced prefix | AS208437 /36 maxLen 36 (ripe) |
2a14:7586:f000::/40 | ✗ invalid | maxLength too short for the announced prefix | AS208437 /36 maxLen 36 (ripe) |
ASPA: this AS has published an ASPA record listing 3 upstream provider(s) that are authorized to propagate routes from it: AS6939, AS9002, AS41720. Routes from this AS that arrive via any other upstream are considered ASPA-invalid by validators that enforce ASPA.
Random-IP probe (yarrp) into the AS' prefixes
At least one router inside AS208437's announced prefix replied during the random-target probe. Hop(s): 2a0d:b287:dad0::1, 2a0d:b287:dad2:9::, 2a14:7586:f000::. These are candidate targets for direct testing.
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 2026-09-23T12:07:30Z
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 | 0.2ms | 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 | e0-33.core2.beg1.he.net 2001:470:1:6e5::1 | 1.5ms | 0% | AS6939 | HURRICANE - Hurricane Electric LLC, US |
| 4 | e0-34.core2.bts1.he.net 2001:470:0:33f::2 | 8.6ms | 0% | AS6939 | HURRICANE - Hurricane Electric LLC, US |
| 5 | * | - | 10% | - | |
| 6 | * | - | - | - | |
| 7 | 2a0d:b287:dad0::1 | 26.3ms | 0% | AS208437 | HYPERBIT-AS - HyperBit SRLs, IT |
Rate-limited ICMPv6: hop 5 (loss between 5% and 95% across mtr cycles - the router replies but only sometimes).
tracepath -6
1?: [LOCALHOST] 0.012ms pmtu 1500
1: _gateway 0.457ms
1: _gateway 0.867ms
2: 2001:7f8:1e::4 0.902ms
3: e0-33.core2.beg1.he.net 1.636ms
4: e0-34.core2.bts1.he.net 8.778ms
5: 100ge0-0-0-2.core1.vie1.he.net 11.740ms
6: no reply
7: 2a0d:b287:dad0::1 26.432ms reached
Resume: pmtu 1500 hops 7 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 | 0.3ms | 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 | retn.bcix.de 2001:7f8:19:1::232a:1 | 42.1ms | 0% | - | NA |
| 4 | RT.MIX.MIL.IT.retn.net 2a02:2d8::57f5:e080 | 19.2ms | 0% | AS9002 | RETN-AS - RETN Limited, GB |
| 5 | 2a0d:b287:dad0::1 | 19.0ms | 0% | AS208437 | HYPERBIT-AS - HyperBit SRLs, IT |
tracepath -6
1?: [LOCALHOST] 0.014ms pmtu 1500
1: xe-0-0-13-178.gw01.ber01.as59645.net 0.414ms
1: xe-0-0-13-178.gw01.ber01.as59645.net 0.464ms
2: ae0-2453.cr10.ber01.lwlcom.net 1.256ms
3: retn.bcix.de 10.788ms asymm 5
4: RT.MIX.MIL.IT.retn.net 41.419ms asymm 5
5: 2a0d:b287:dad0::1 19.103ms reached
Resume: pmtu 1500 hops 5 back 6 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 | 1.1ms | 0% | AS24961 | MYLOC-AS - WIIT AG, DE |
| 3 | * | - | - | - | |
| 4 | lag30.core3-dus1.bb.wiit.network 2001:4ba0:ffe9:109::2 | 0.3ms | 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 | 7.3ms | 0% | AS24961 | MYLOC-AS - WIIT AG, DE |
| 8 | 2001:4ba0:ffe9:b8 | 9.4ms | 0% | - | |
| 9 | lag0-vl1009.core1-muc-eq3.bb.wiit.network 2001:4ba0:ffe9:a7::1 | 9.9ms | 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 | 2a0d:b287:dad0::1 | 19.7ms | 0% | AS208437 | HYPERBIT-AS - HyperBit SRLs, IT |
tracepath -6
1?: [LOCALHOST] 0.021ms pmtu 1500
1: xe-0-0-12-142.gw01.dus01.as59645.net 0.336ms
1: xe-0-0-12-142.gw01.dus01.as59645.net 0.244ms
2: eth1-0-12-h5594.edge5-dus1.bb.wiit.network 1.029ms
3: no reply
4: lag30.core3-dus1.bb.wiit.network 0.340ms
5: lag0-vl1011.core1-fra-ix.bb.wiit.network 4.567ms
6: lag0-vl1001.core1-nbg-ncd.bb.wiit.network 6.958ms
7: lag0-vl6.core2-nbg-ncd.bb.wiit.network 6.955ms
8: lag0-vl1006.core2-muc2.bb.wiit.network 15.701ms
9: lag0-vl1009.core1-muc-eq3.bb.wiit.network 9.756ms
10: lag0-vl1001.core1-pda-vsix.bb.wiit.network 20.389ms
11: 2a0d:b287:dad0::1 19.785ms reached
Resume: pmtu 1500 hops 11 back 5 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 | 3.7ms | 0% | AS203993 | GNA-DC1-AS - S.J.M. Steffann, NL |
| 2 | gw.friends.steffann.nl 2a00:8642:1000:f000::1 | 4.0ms | 0%* | AS203993 | GNA-DC1-AS - S.J.M. Steffann, NL |
| 3 | ccr2-ccr1.dc1.nogalliance.org 2a00:8642:dc1:2::b | 4.4ms | 0% | AS203993 | GNA-DC1-AS - S.J.M. Steffann, NL |
| 4 | ams-ix.retn.net 2001:7f8:1::a500:9002:1 | 5.6ms | 0% | - | NA |
| 5 | RT.MIX.MIL.IT.retn.net 2a02:2d8::57f5:e080 | 31.6ms | 0% | AS9002 | RETN-AS - RETN Limited, GB |
| 6 | 2a0d:b287:dad0::1 | 20.7ms | 0% | AS208437 | HYPERBIT-AS - HyperBit SRLs, IT |
tracepath -6
1?: [LOCALHOST] 0.042ms pmtu 1500
1: 2a00:8642:42::2 2.738ms
1: 2a00:8642:42::2 2.693ms
2: no reply
3: ccr2-ccr1.dc1.nogalliance.org 4.474ms asymm 2
4: ams-ix.retn.net 5.131ms asymm 7
5: RT.MIX.MIL.IT.retn.net 21.887ms asymm 6
6: 2a0d:b287:dad0::1 20.112ms 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 | * | - | 0%* | - | |
| 2 | * | - | 0%* | - | |
| 3 | * | - | - | - | |
| 4 | 2a0d:b287:dad0::1 | 8.4ms | 0% | AS208437 | HYPERBIT-AS - HyperBit SRLs, IT |
tracepath -6
1?: [LOCALHOST] 0.028ms pmtu 1500
1: karsolink-01.net.karsolink.com 0.750ms
1: karsolink-01.net.karsolink.com 0.670ms
2: 2a12:d8c0:109f:121::a1 0.743ms
3: no reply
4: 2a0d:b287:dad0::1 8.020ms reached
Resume: pmtu 1500 hops 4 back 6 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 | * | - | 0% | - | |
| 4 | 2a00:ee0:1:15::2 | 1.2ms | 0% | AS5603 | SIOL-NET - Telekom Slovenije, d.d., SI |
| 5 | de-cix1.rt.act.fkt.de.retn.net 2001:7f8::232a:0:1 | 14.2ms | 0% | - | NA |
| 6 | RT.MIX.MIL.IT.retn.net 2a02:2d8::57f5:e080 | 27.5ms | 0% | AS9002 | RETN-AS - RETN Limited, GB |
| 7 | 2a0d:b287:dad0::1 | 15.8ms | 0% | AS208437 | HYPERBIT-AS - HyperBit SRLs, IT |
tracepath -6
1?: [LOCALHOST] 0.017ms pmtu 9000
1: fw1-lju.6connect.com 0.581ms
1: fw1-lju.6connect.com 0.549ms
2: no reply
3: 2a00:ee1:800:9::1 2.416ms
4: 2a00:ee0:1:10::2 1.585ms asymm 3
5: 2a00:ee0:1:10::2 1.523ms pmtu 1500
5: de-cix1.rt.act.fkt.de.retn.net 14.425ms asymm 9
6: RT.MIX.MIL.IT.retn.net 16.318ms asymm 8
7: 2a0d:b287:dad0::1 16.175ms reached
Resume: pmtu 1500 hops 7 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 | 12.8ms | 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 | 2.1ms | 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 | 2.3ms | - | 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 | * | - | - | - | |
| 7 | 2a0d:b287:dad0::1 | 21.1ms | 0% | AS208437 | HYPERBIT-AS - HyperBit SRLs, IT |
tracepath -6
1?: [LOCALHOST] 0.027ms pmtu 1500
1: 2a01:261:313:b814::1 1.125ms
1: no reply
2: 2a01:260:1::225 2.751ms
3: 2a01-260-1-1--9a.core6.t-2.net 2.965ms
4: 2a01-260-1-1--38.core6.t-2.net 3.033ms asymm 3
5: port-channel1.core1.zag2.he.net 12.042ms asymm 7
6: port-channel1.core1.zag2.he.net 10.918ms asymm 7
7: 2a0d:b287:dad0::1 21.348ms reached
Resume: pmtu 1500 hops 7 back 7