AS overview
Test target: 2a0e:8440::1 · static prefix probe · address space: PA · prefixes announced: 1
prefix(es): 2a0e:8440::/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 | ||
2a0e:8440::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
0 of 1 prefix(es) covered by a valid ROA, 1 not-found.
| Prefix | RPKI state | Reason | Covering VRP(s) |
|---|---|---|---|
2a0e:8440::/29 | - not-found | no covering VRP |
Random-IP probe (yarrp) into the AS' prefixes
We probed 35 arbitrary IPv6 address(es) inside AS47373's announced prefix(es). No router inside the prefix responded. The deepest visible hop was 2a02:1688:0:1001::1 at hop 13 - that router answers ICMPv6 Echo. This is not in AS47373'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 2026-09-24T13:33:45Z
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 | 0.4ms | 0% | AS13004 | SOX - Serbian Open Exchange DOO, RS |
| 3 | 2001:7f8:1e:8::3d | 7.3ms | 0% | AS13004 | SOX - Serbian Open Exchange DOO, RS |
| 4 | 2a02:2d8:0:a00e:232a | 11.3ms | 0% | - | |
| 5 | RT.IRX.FKT.DE.retn.net 2a02:2d8::57f5:e0a1 | 24.3ms | 90% | AS9002 | RETN-AS - RETN Limited, GB |
| 6 | GW-AS48362.retn.net 2a02:2d8:1:703f:232a::1 | 35.3ms | 0% | AS9002 | RETN-AS - RETN Limited, GB |
| 7 | 2a02:1688:0:1001 | 33.5ms | 0% | - | |
| 8 | 2a02:1688:0:1001::1 | 36.5ms | 0% | AS48362 | TKSWF-AS - Stadtwerke Feldkirch, AT |
Rate-limited ICMPv6: hop 5 (loss between 5% and 95% across mtr cycles - the router replies but only sometimes).
tracepath -6
1?: [LOCALHOST] 0.020ms pmtu 1500
1: _gateway 0.439ms
1: _gateway 0.390ms
2: sox-pn.sox.rs 2.035ms
3: 2001:7f8:1e:8::3d 0.543ms asymm 2
4: ae8-930.RT.IRX.VIE.AT.retn.net 13.172ms asymm 3
5: RT.IRX.FKT.DE.retn.net 24.685ms
6: GW-AS48362.retn.net 35.281ms asymm 12
7: 2a02:1688:0:1001:: 33.862ms asymm 11
8: 2a02:1688:0:1001::1 38.002ms reached
Resume: pmtu 1500 hops 8 back 12 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 | 0.7ms | 0%* | AS59645 | WYBT-NET - Tobias Fiebig, DE |
| 3 | retn.bcix.de 2001:7f8:19:1::232a:1 | 10.5ms | 0% | - | NA |
| 4 | * | - | 70% | - | |
| 5 | GW-AS48362.retn.net 2a02:2d8:1:703f:232a::1 | 24.8ms | 0% | AS9002 | RETN-AS - RETN Limited, GB |
| 6 | 2a02:1688:0:1001 | 25.3ms | 0% | - | |
| 7 | 2a02:1688:0:1001::1 | 26.1ms | 10% | AS48362 | TKSWF-AS - Stadtwerke Feldkirch, AT |
Rate-limited ICMPv6: hop 4, hop 7 (loss between 5% and 95% across mtr cycles - the router replies but only sometimes).
tracepath -6
1?: [LOCALHOST] 0.022ms pmtu 1500
1: xe-0-0-13-178.gw01.ber01.as59645.net 0.573ms
1: xe-0-0-13-178.gw01.ber01.as59645.net 0.584ms
2: ae0-2453.cr10.ber01.lwlcom.net 1.125ms
3: retn.bcix.de 10.706ms asymm 5
4: RT.IRX.FKT.DE.retn.net 11.167ms
5: GW-AS48362.retn.net 25.261ms asymm 8
6: 2a02:1688:0:1001:: 25.317ms asymm 7
7: 2a02:1688:0:1001::1 26.697ms reached
Resume: pmtu 1500 hops 7 back 8 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 | 1.2ms | 0% | AS24961 | MYLOC-AS - WIIT AG, DE |
| 3 | * | - | - | - | |
| 4 | lag11.core3-dus1.bb.wiit.network 2001:4ba0:ffe9:115::3 | 0.4ms | 0% | AS24961 | MYLOC-AS - WIIT AG, DE |
| 5 | lag8.core1-dus-ix.bb.wiit.network 2001:4ba0:ffe9:8::2 | 0.6ms | 0% | AS24961 | MYLOC-AS - WIIT AG, DE |
| 6 | ipv6.de-cix.feldkirch.tkswf.at 2001:7f8::bcea:0:1 | 18.6ms | 0% | - | NA |
| 7 | 2a02:1688:0:1001 | 18.9ms | 0% | - | |
| 8 | 2a02:1688:0:1001::1 | 21.1ms | 0% | AS48362 | TKSWF-AS - Stadtwerke Feldkirch, AT |
tracepath -6
1?: [LOCALHOST] 0.030ms pmtu 1500
1: xe-0-0-12-142.gw01.dus01.as59645.net 0.420ms
1: xe-0-0-12-142.gw01.dus01.as59645.net 0.378ms
2: eth1-0-12-h5594.edge5-dus1.bb.wiit.network 1.961ms
3: no reply
4: lag30.core3-dus1.bb.wiit.network 0.437ms
5: lag2.core1-dus-ix.bb.wiit.network 0.616ms
6: ipv6.de-cix.feldkirch.tkswf.at 18.806ms asymm 7
7: 2a02:1688:0:1001:: 19.274ms asymm 6
8: 2a02:1688:0:1001::1 20.648ms reached
Resume: pmtu 1500 hops 8 back 7 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 | 2.2ms | 0% | AS203993 | GNA-DC1-AS - S.J.M. Steffann, NL |
| 2 | * | - | 0%* | - | |
| 3 | ccr2-ccr1.dc1.nogalliance.org 2a00:8642:dc1:2::b | 2.9ms | - | AS203993 | GNA-DC1-AS - S.J.M. Steffann, NL |
| 4 | * | - | - | - | |
| 5 | 2a02:1688:0:1001 | 24.6ms | 0% | - | |
| 6 | 2a02:1688:0:1001::1 | 24.5ms | 0% | AS48362 | TKSWF-AS - Stadtwerke Feldkirch, AT |
tracepath -6
1?: [LOCALHOST] 0.043ms pmtu 1500
1: 2a00:8642:42::2 1.368ms
1: 2a00:8642:42::2 2.499ms
2: gw.friends.steffann.nl 4.870ms
3: ccr2-ccr1.dc1.nogalliance.org 5.177ms asymm 2
4: no reply
5: 2a02:1688:0:1001:: 26.443ms asymm 7
6: 2a02:1688:0:1001::1 27.086ms reached
Resume: pmtu 1500 hops 6 back 8 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 | * | - | 70% | - | |
| 4 | * | - | - | - | |
| 5 | be47.core1.mil2.he.net 2001:470:e:69::2 | 12.4ms | 0% | AS6939 | HURRICANE - Hurricane Electric LLC, US |
| 6 | * | - | 10% | - | |
| 7 | * | - | - | - | |
| 8 | be1.core3.zrh3.he.net 2001:470:0:7e0::2 | 17.0ms | 0% | AS6939 | HURRICANE - Hurricane Electric LLC, US |
| 9 | * | - | - | - | |
| 10 | ip6-ae2-0-r21.inx.vie.nextlayer.net 2a01:190:1764:8007::1 | 20.0ms | 0% | AS1764 | NEXTLAYER-AS - Next Layer Telekommunikationsdienstleistungs- und Beratungs GmbH, AT |
| 11 | 2a01:190:1700:105::2 | 36.3ms | 0% | AS1764 | NEXTLAYER-AS - Next Layer Telekommunikationsdienstleistungs- und Beratungs GmbH, AT |
| 12 | 2a02:1688:0:1001 | 25.3ms | 0% | - | |
| 13 | * | - | 0% | - | |
| 14 | 2a02:1688:0:1001::1 | 27.3ms | - | AS48362 | TKSWF-AS - Stadtwerke Feldkirch, AT |
Rate-limited ICMPv6: hop 3, hop 6 (loss between 5% and 95% across mtr cycles - the router replies but only sometimes).
tracepath -6
1?: [LOCALHOST] 0.033ms pmtu 1500
1: karsolink-01.net.karsolink.com 0.639ms
2: 2a12:d8c0:109f:121::a1 0.608ms
3: 2a12:d8c0:101f:6::1 10.222ms
4: no reply
5: be47.core1.mil2.he.net 12.908ms
6: be1.core1.zrh2.he.net 14.690ms
7: no reply
8: be1.core3.zrh3.he.net 15.203ms
9: no reply
10: ip6-ae1-0-r21.inx.vie.nextlayer.net 21.147ms asymm 11
11: 2a01:190:1700:105::2 37.765ms asymm 6
12: 2a02:1688:0:1001:: 26.438ms asymm 6
13: 2a02:1688:0:1001::1 27.176ms reached
Resume: pmtu 1500 hops 13 back 7 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 | 0.5ms | 0%* | AS8038 | 6CONNECT - 6connect, Inc., US |
| 2 | * | - | - | - | |
| 3 | * | - | 40% | - | |
| 4 | 2a00:ee0:1:10::2 | 1.1ms | 0% | AS5603 | SIOL-NET - Telekom Slovenije, d.d., SI |
| 5 | ipv6.de-cix.feldkirch.tkswf.at 2001:7f8::bcea:0:1 | 25.4ms | 0% | - | NA |
| 6 | 2a02:1688:0:1001 | 32.4ms | 0% | - | |
| 7 | 2a02:1688:0:1001::1 | 25.7ms | 0% | AS48362 | TKSWF-AS - Stadtwerke Feldkirch, AT |
Rate-limited ICMPv6: hop 3 (loss between 5% and 95% across mtr cycles - the router replies but only sometimes).
tracepath -6
1?: [LOCALHOST] 0.021ms pmtu 9000
1: fw1-lju.6connect.com 0.558ms
1: fw1-lju.6connect.com 0.511ms
2: no reply
3: no reply
4: 2a00:ee0:1:10::2 1.260ms asymm 3
5: 2a00:ee0:1:15::2 1.629ms pmtu 1500
5: ipv6.de-cix.feldkirch.tkswf.at 25.137ms asymm 13
6: 2a02:1688:0:1001:: 28.662ms asymm 12
7: 2a02:1688:0:1001::1 25.953ms reached
Resume: pmtu 1500 hops 7 back 13 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 | 2.8ms | 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--c.core6.t-2.net 2a01:260:1:1::c | 4.8ms | 0%* | AS34779 | T-2-AS - T-2, d.o.o., SI |
| 5 | 2a01-260-1-1--c.core6.t-2.net 2a01:260:1:1::c | 4.2ms | 0%* | AS34779 | T-2-AS - T-2, d.o.o., SI |
| 6 | 2001:7f8:30:0:2:1:4:8362 @VIX / AAIX / SAIX / TIROL-IX / ERA-IX | 17.6ms | 0% | - | NA |
| 7 | 2a02:1688:0:1001 | 16.8ms | 0% | - | |
| 8 | 2a02:1688:0:1001::1 | 17.8ms | 0% | AS48362 | TKSWF-AS - Stadtwerke Feldkirch, AT |
tracepath -6
1?: [LOCALHOST] 0.028ms pmtu 1500
1: 2a01:261:313:b814::1 0.960ms
1: 2a01:261:313:b814::1 0.961ms
2: 2a01:260:1::225 3.566ms
3: 2a01-260-1-1--9a.core6.t-2.net 2.973ms
4: 2a01-260-1-1--c.core6.t-2.net 5.359ms
5: 2a01-260-1-1--2a.core6.t-2.net 4.028ms asymm 4
6: 2001:7f8:30:0:2:1:4:8362 17.129ms asymm 5
7: 2a02:1688:0:1001:: 18.164ms asymm 6
8: 2a02:1688:0:1001::1 18.833ms reached
Resume: pmtu 1500 hops 8 back 7