AS overview
Test target: 2a07:1800::1 · static prefix probe · address space: PA · prefixes announced: 1
prefix(es): 2a07:1800::/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 | ||
2a07:1800::1 | prb | ✓ | ✓ | ? | ? | - | ✓ | ✓ | ? | ? | - | ✓ | ✓ | ? | ? | - | ✓ | ✓ | ? | ? | - | ✓ | ✓ | ? | ? | - | ✓ | ✓ | ? | ? | - | ✓ | ✓ | ? | ? | - |
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 SRB host (SOX, Belgrade), SLO host (T-2) - reached via an VIX / AAIX / SAIX / TIROL-IX / ERA-IX-resident transit operator.
RPKI & ASPA
0 of 1 prefix(es) covered by a valid ROA, 1 not-found.
| Prefix | RPKI state | Reason | Covering VRP(s) |
|---|---|---|---|
2a07:1800::/29 | - not-found | no covering VRP |
Random-IP probe (yarrp) into the AS' prefixes
We probed 35 arbitrary IPv6 address(es) inside AS51560's announced prefix(es). No router inside the prefix responded. The deepest visible hop was 2a01:190:1703:1e::2 at hop 24 - that router answers ICMPv6 Echo. This is not in AS51560'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 2026-09-24T13:32:47Z
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 | sox-pn.sox.rs 2001:7f8:1e:8::3a | 0.3ms | 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 | 2a02:2d8:0:a00e:232a | 24.2ms | 60% | - | |
| 5 | vix-ip6-et-0-1-2-0-r60.inx.vie.at.nextlayer.net @VIX / AAIX / SAIX / TIROL-IX / ERA-IX 2001:7f8:30:0:2:1:0:1764 | 45.5ms | 0% | - | NA |
| 6 | ip6-ae2-0-r35.esh.vie.nextlayer.net 2a01:190:1764:7e::2 | 24.4ms | 0% | AS1764 | NEXTLAYER-AS - Next Layer Telekommunikationsdienstleistungs- und Beratungs GmbH, AT |
| 7 | * | - | 0% | - | |
| 8 | * | - | - | - | |
| 9 | * | - | - | - | |
| 10 | * | - | - | - | |
| 11 | * | - | - | - | |
| 12 | * | - | - | - | |
| 13 | * | - | - | - | |
| 14 | * | - | - | - | |
| 15 | * | - | - | - | |
| 16 | * | - | - | - |
Rate-limited ICMPv6: hop 4 (loss between 5% and 95% across mtr cycles - the router replies but only sometimes).
tracepath -6
1?: [LOCALHOST] 0.011ms pmtu 1500
1: _gateway 0.485ms
1: _gateway 0.547ms
2: sox-pn.sox.rs 0.351ms
3: 2001:7f8:1e:8::3d 0.534ms asymm 2
4: ae8-930.RT.IRX.VIE.AT.retn.net 12.867ms asymm 3
5: vix-ip6-et-0-1-2-0-r60.inx.vie.at.nextlayer.net 13.269ms asymm 3
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
16: 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 | 0.3ms | 0%* | AS59645 | WYBT-NET - Tobias Fiebig, DE |
| 2 | ae0-2453.cr10.ber01.lwlcom.net 2a06:d1c0::dead:beef:1c02 | 0.6ms | 0%* | AS59645 | WYBT-NET - Tobias Fiebig, DE |
| 3 | ae0-150.cr10.fra01.lwlcom.net 2a00:c380:b200:230::174 | 10.1ms | 0% | AS50629 | LWLCOM - LWLcom GmbH, DE |
| 4 | ae0-100.cr10.fra02.lwlcom.net 2a00:c380:b200:230::215 | 10.3ms | 0% | AS50629 | LWLCOM - LWLcom GmbH, DE |
| 5 | ae0-10.cr10.fra06.lwlcom.net 2a00:c380:b200:230::236 | 10.0ms | 0% | AS50629 | LWLCOM - LWLcom GmbH, DE |
| 6 | nextlayer.peering.cz 2001:7f8:7f::c:31 | 18.4ms | 0% | - | NA |
| 7 | ip6-ae1-0-r35.esh.vie.nextlayer.net 2a01:190:1764:7a::2 | 31.1ms | 0% | AS1764 | NEXTLAYER-AS - Next Layer Telekommunikationsdienstleistungs- und Beratungs GmbH, AT |
| 8 | * | - | 0% | - | |
| 9 | * | - | - | - | |
| 10 | * | - | - | - | |
| 11 | * | - | - | - | |
| 12 | * | - | - | - | |
| 13 | * | - | - | - | |
| 14 | * | - | - | - | |
| 15 | * | - | - | - | |
| 16 | * | - | - | - |
tracepath -6
1?: [LOCALHOST] 0.033ms pmtu 1500
1: xe-0-0-13-178.gw01.ber01.as59645.net 0.607ms
1: xe-0-0-13-178.gw01.ber01.as59645.net 0.474ms
2: ae0-2453.cr10.ber01.lwlcom.net 2.379ms
3: ae0-150.cr10.fra01.lwlcom.net 10.323ms asymm 7
4: ae0-100.cr10.fra02.lwlcom.net 10.533ms asymm 8
5: ae0-10.cr10.fra06.lwlcom.net 10.355ms asymm 7
6: nextlayer.peering.cz 25.050ms asymm 8
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
16: 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 | 1.1ms | 0% | AS24961 | MYLOC-AS - WIIT AG, DE |
| 3 | * | - | - | - | |
| 4 | lag11.core3-dus1.bb.wiit.network 2001:4ba0:ffe9:115::3 | 0.2ms | 0% | AS24961 | MYLOC-AS - WIIT AG, DE |
| 5 | lag2.core1-dus-ix.bb.wiit.network 2001:4ba0:ffe9:4f::1 | 0.4ms | 0% | AS24961 | MYLOC-AS - WIIT AG, DE |
| 6 | de-cix.r60.inx.fra.de.nextlayer.net 2001:7f8::6e4:0:1 | 3.8ms | 0% | - | NA |
| 7 | ip6-ae2-0-r35.esh.vie.nextlayer.net 2a01:190:1764:7e::2 | 34.5ms | 0% | AS1764 | NEXTLAYER-AS - Next Layer Telekommunikationsdienstleistungs- und Beratungs GmbH, AT |
| 8 | * | - | 0% | - | |
| 9 | * | - | - | - | |
| 10 | * | - | - | - | |
| 11 | * | - | - | - | |
| 12 | * | - | - | - | |
| 13 | * | - | - | - | |
| 14 | * | - | - | - | |
| 15 | * | - | - | - | |
| 16 | * | - | - | - |
tracepath -6
1?: [LOCALHOST] 0.048ms pmtu 1500
1: xe-0-0-12-142.gw01.dus01.as59645.net 0.334ms
1: xe-0-0-12-142.gw01.dus01.as59645.net 0.293ms
2: eth1-0-12-h5594.edge5-dus1.bb.wiit.network 1.399ms
3: no reply
4: lag11.core3-dus1.bb.wiit.network 0.487ms
5: lag8.core1-dus-ix.bb.wiit.network 0.597ms
6: de-cix.r60.inx.fra.de.nextlayer.net 4.102ms
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
16: 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 | 1.7ms | 0% | AS203993 | GNA-DC1-AS - S.J.M. Steffann, NL |
| 2 | * | - | 0%* | - | |
| 3 | 2a00:1ca8:1::194 | 4.5ms | 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 | * | - | 60% | - | |
| 6 | be2.core1.cph1.he.net 2001:470:e:5f::1 | 28.2ms | 10% | AS6939 | HURRICANE - Hurricane Electric LLC, US |
| 7 | * | - | - | - | |
| 8 | * | - | 0% | - | |
| 9 | ams-ix.r06.nikh.ams.nl.nextlayer.net 2001:7f8:1::a500:1764:1 | 41.9ms | 0% | - | NA |
| 10 | * | - | 0% | - | |
| 11 | * | - | - | - | |
| 12 | * | - | - | - | |
| 13 | * | - | - | - | |
| 14 | * | - | - | - | |
| 15 | * | - | - | - | |
| 16 | * | - | - | - |
Rate-limited ICMPv6: hop 5, hop 6 (loss between 5% and 95% across mtr cycles - the router replies but only sometimes).
tracepath -6
1?: [LOCALHOST] 0.035ms pmtu 1500
1: 2a00:8642:42::2 4.007ms
1: 2a00:8642:42::2 1.927ms
2: gw.friends.steffann.nl 2.240ms
3: 2a00:1ca8:1::194 5.172ms
4: 2a03:3f40::10:41 3.593ms
5: 2001:b28:3ff::1b1b:0:1 28.990ms
6: be9.core4.fra1.he.net 31.825ms asymm 4
7: no reply
8: no reply
9: ams-ix.r06.nikh.ams.nl.nextlayer.net 43.525ms asymm 8
10: no reply
11: no reply
12: no reply
13: no reply
14: no reply
15: no reply
16: 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 | * | - | 20% | - | |
| 4 | * | - | - | - | |
| 5 | be47.core1.mil2.he.net 2001:470:e:69::2 | 12.2ms | 0% | AS6939 | HURRICANE - Hurricane Electric LLC, US |
| 6 | be1.core1.zrh2.he.net 2001:470:e:dd::2 | 15.0ms | 0% | AS6939 | HURRICANE - Hurricane Electric LLC, US |
| 7 | * | - | - | - | |
| 8 | be1.core3.zrh3.he.net 2001:470:0:7e0::2 | 16.4ms | 0% | AS6939 | HURRICANE - Hurricane Electric LLC, US |
| 9 | * | - | - | - | |
| 10 | ip6-ae2-0-r35.esh.vie.nextlayer.net 2a01:190:1764:7e::2 | 37.8ms | 0% | AS1764 | NEXTLAYER-AS - Next Layer Telekommunikationsdienstleistungs- und Beratungs GmbH, AT |
| 11 | * | - | 0% | - | |
| 12 | * | - | - | - | |
| 13 | * | - | - | - | |
| 14 | * | - | - | - | |
| 15 | * | - | - | - | |
| 16 | * | - | - | - |
Rate-limited ICMPv6: hop 3 (loss between 5% and 95% across mtr cycles - the router replies but only sometimes).
tracepath -6
1?: [LOCALHOST] 0.035ms pmtu 1500
1: karsolink-01.net.karsolink.com 0.575ms
1: karsolink-01.net.karsolink.com 0.537ms
2: 2a12:d8c0:109f:121::a1 242.421ms
3: no reply
4: no reply
5: be47.core1.mil2.he.net 11.754ms
6: be1.core1.zrh2.he.net 15.238ms
7: no reply
8: be1.core3.zrh3.he.net 14.951ms
9: no reply
10: no reply
11: no reply
12: no reply
13: no reply
14: no reply
15: no reply
16: 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 | * | - | - | - | |
| 3 | * | - | 20% | - | |
| 4 | 2a00:ee0:1:10::2 | 0.9ms | 0% | AS5603 | SIOL-NET - Telekom Slovenije, d.d., SI |
| 5 | de-cix.r60.inx.fra.de.nextlayer.net 2001:7f8::6e4:0:1 | 15.4ms | 0% | - | NA |
| 6 | ip6-ae2-0-r35.esh.vie.nextlayer.net 2a01:190:1764:7e::2 | 37.9ms | 0% | AS1764 | NEXTLAYER-AS - Next Layer Telekommunikationsdienstleistungs- und Beratungs GmbH, AT |
| 7 | * | - | 0% | - | |
| 8 | * | - | - | - | |
| 9 | * | - | - | - | |
| 10 | * | - | - | - | |
| 11 | * | - | - | - | |
| 12 | * | - | - | - | |
| 13 | * | - | - | - | |
| 14 | * | - | - | - | |
| 15 | * | - | - | - | |
| 16 | * | - | - | - |
Rate-limited ICMPv6: hop 3 (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 0.494ms
1: fw1-lju.6connect.com 0.482ms
2: ccr-to-fw-ccr1-gw-lju.6connect.com 141.069ms
3: no reply
4: 2a00:ee0:1:15::2 1.776ms asymm 3
5: 2a00:ee0:1:10::2 1.862ms pmtu 1500
5: de-cix.r60.inx.fra.de.nextlayer.net 15.656ms asymm 6
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
16: 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 | 6.0ms | 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 | 2.6ms | 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 | 4.5ms | 0%* | AS34779 | T-2-AS - T-2, d.o.o., SI |
| 5 | vix-ip6-et-0-1-2-0-r60.esh.vie.at.nextlayer.net @VIX / AAIX / SAIX / TIROL-IX / ERA-IX 2001:7f8:30:0:1:1:0:1764 | 8.2ms | 0%* | - | NA |
| 6 | ip6-ae2-0-r35.esh.vie.nextlayer.net 2a01:190:1764:7e::2 | 20.6ms | 0% | AS1764 | NEXTLAYER-AS - Next Layer Telekommunikationsdienstleistungs- und Beratungs GmbH, AT |
| 7 | * | - | 0% | - | |
| 8 | * | - | 0% | - | |
| 9 | * | - | - | - | |
| 10 | * | - | - | - | |
| 11 | * | - | - | - | |
| 12 | * | - | - | - | |
| 13 | * | - | - | - | |
| 14 | * | - | - | - | |
| 15 | * | - | - | - | |
| 16 | * | - | - | - |
tracepath -6
1?: [LOCALHOST] 0.011ms pmtu 1500
1: no reply
2: 2a01:260:1::225 3.110ms
3: 2a01-260-1-1--9c.core6.t-2.net 2.925ms
4: 2a01-260-1-1--25.core6.t-2.net 5.458ms
5: vix-ip6-et-0-1-2-0-r60.esh.vie.at.nextlayer.net 9.791ms
6: vix-ip6-et-0-1-2-0-r60.esh.vie.at.nextlayer.net 9.666ms 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
16: no reply
Too many hops: pmtu 1500
Resume: pmtu 1500