AS overview
Test target: 2001:67c:5fc::1 · static prefix probe · address space: mixed · prefixes announced: 9
prefix(es): 2001:67c:5fc::/48, 2001:67c:2604::/48, 2a14:2c0::/29, 2001:678:e90::/48, 2001:890::/29, 2001:4bb8::/29, 2001:67c:2aa4::/48, 2001:870::/29 (+1 more)
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 | ||
2001:67c:5fc::1 | prb | ✓ | ✓ | refused | refused | - | ✓ | ✓ | refused | refused | - | ✓ | ✓ | refused | refused | - | ✓ | ✓ | ? | ? | - | ✓ | ✓ | refused | refused | - | ✓ | ✓ | refused | refused | - | ✓ | ✓ | refused | refused | - |
VIX / AAIX / SAIX / TIROL-IX / ERA-IX peering
VIX / AAIX / SAIX / TIROL-IX / ERA-IX member - Selective peering, peering member, since 2013-03-30. IPv6 LAN: 2001:7f8:30:0:2:1:0:8447. Locations: -.
RPKI & ASPA
5 of 9 prefix(es) covered by a valid ROA, 4 not-found.
| Prefix | RPKI state | Reason | Covering VRP(s) |
|---|---|---|---|
2001:67c:5fc::/48 | - not-found | no covering VRP | |
2001:67c:2604::/48 | - not-found | no covering VRP | |
2a14:2c0::/29 | ✓ valid | matched VRP (correct origin, length within maxLength) | AS8447 /29 maxLen 29 (ripe) |
2001:678:e90::/48 | - not-found | no covering VRP | |
2001:890::/29 | ✓ valid | matched VRP (correct origin, length within maxLength) | AS8447 /29 maxLen 29 (ripe) |
2001:4bb8::/29 | ✓ valid | matched VRP (correct origin, length within maxLength) | AS8447 /29 maxLen 29 (ripe) |
2001:67c:2aa4::/48 | - not-found | no covering VRP | |
2001:870::/29 | ✓ valid | matched VRP (correct origin, length within maxLength) | AS8447 /29 maxLen 29 (ripe) |
2001:850::/29 | ✓ valid | matched VRP (correct origin, length within maxLength) | AS8447 /29 maxLen 29 (ripe) |
Random-IP probe (yarrp) into the AS' prefixes
At least one router inside AS8447's announced prefix replied during the random-target probe. Hop(s): 2001:850:1:103::, 2001:850:1:119::1, 2001:850:1:11f::, 2001:850:1:120::, 2001:850:1:126::. 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 2026-09-22T13:50:40Z
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 | 0.4ms | 0%* | AS60733 | PERKE-NET - ZORAN PEROVIC trading as Agencija Perke.NET, RS |
| 2 | sox-pn.sox.rs 2001:7f8:1e:8::3a | 0.2ms | 0% | AS13004 | SOX - Serbian Open Exchange DOO, RS |
| 3 | 2001:7f8:1e:8::3d | 0.6ms | 0% | AS13004 | SOX - Serbian Open Exchange DOO, RS |
| 4 | 2a02:2d8:0:a00e:232a | 12.7ms | 0% | - | |
| 5 | * | - | 0% | - | |
| 6 | * | - | 0% | - | |
| 7 | * | - | 0% | - | |
| 8 | * | - | 0% | - | |
| 9 | 2001:850:507:8::2 | 13.3ms | 0% | AS8447 | A1TELEKOM-AT - A1 Telekom Austria AG, AT |
tracepath -6
1?: [LOCALHOST] 0.010ms pmtu 1500
1: _gateway 0.706ms
1: _gateway 0.472ms
2: sox-pn.sox.rs 0.704ms
3: 2001:7f8:1e:8::3d 0.665ms asymm 2
4: ae8-930.RT.IRX.VIE.AT.retn.net 12.961ms asymm 3
5: no reply
6: no reply
7: no reply
8: no reply
9: 2001:850:507:8::2 13.336ms reached
Resume: pmtu 1500 hops 9 back 7 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 | ae0-150.cr10.fra01.lwlcom.net 2a00:c380:b200:230::174 | 10.0ms | 0% | AS50629 | LWLCOM - LWLcom GmbH, DE |
| 4 | ae0-100.cr10.fra02.lwlcom.net 2a00:c380:b200:230::215 | 10.4ms | 0% | AS50629 | LWLCOM - LWLcom GmbH, DE |
| 5 | * | - | 0% | - | |
| 6 | * | - | 0% | - | |
| 7 | * | - | 0% | - | |
| 8 | * | - | 0% | - | |
| 9 | 2001:850:507:8::2 | 24.2ms | 0% | AS8447 | A1TELEKOM-AT - A1 Telekom Austria AG, AT |
tracepath -6
1?: [LOCALHOST] 0.054ms pmtu 1500
1: xe-0-0-13-178.gw01.ber01.as59645.net 0.788ms
1: xe-0-0-13-178.gw01.ber01.as59645.net 0.433ms
2: ae0-2453.cr10.ber01.lwlcom.net 0.928ms
3: ae0-150.cr10.fra01.lwlcom.net 14.972ms asymm 7
4: ae0-100.cr10.fra02.lwlcom.net 10.830ms asymm 8
5: no reply
6: no reply
7: no reply
8: no reply
9: 2001:850:507:8::2 23.077ms reached
Resume: pmtu 1500 hops 9 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 | 0.3ms | 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 | lag10-h5f01.agr4-dus1.bb.wiit.network 2001:4ba0:ffe9:7c::1 | 11.7ms | 0% | AS24961 | MYLOC-AS - WIIT AG, DE |
| 4 | lag11.core3-dus1.bb.wiit.network 2001:4ba0:ffe9:115::3 | 0.3ms | 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 | * | - | 0% | - | |
| 7 | * | - | 0% | - | |
| 8 | * | - | 0% | - | |
| 9 | * | - | 0% | - | |
| 10 | 2001:850:507:8::2 | 16.8ms | 10% | AS8447 | A1TELEKOM-AT - A1 Telekom Austria AG, AT |
Rate-limited ICMPv6: hop 10 (loss between 5% and 95% across mtr cycles - the router replies but only sometimes).
tracepath -6
1?: [LOCALHOST] 0.024ms pmtu 1500
1: xe-0-0-12-142.gw01.dus01.as59645.net 0.649ms
1: xe-0-0-12-142.gw01.dus01.as59645.net 0.393ms
2: eth1-0-12-h5594.edge5-dus1.bb.wiit.network 1.171ms
3: no reply
4: lag11.core3-dus1.bb.wiit.network 0.391ms
5: lag2.core1-dus-ix.bb.wiit.network 0.528ms
6: no reply
7: no reply
8: no reply
9: no reply
10: 2001:850:507:8::2 16.339ms reached
Resume: pmtu 1500 hops 10 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 | 1.3ms | 0% | AS203993 | GNA-DC1-AS - S.J.M. Steffann, NL |
| 2 | * | - | 0%* | - | |
| 3 | * | - | 30% | - | |
| 4 | * | - | 0% | - | |
| 5 | * | - | 0% | - | |
| 6 | * | - | 0% | - | |
| 7 | * | - | 0% | - | |
| 8 | 2001:850:507:8::2 | 24.2ms | 0% | AS8447 | A1TELEKOM-AT - A1 Telekom Austria AG, AT |
Rate-limited ICMPv6: hop 3 (loss between 5% and 95% across mtr cycles - the router replies but only sometimes).
tracepath -6
1?: [LOCALHOST] 0.036ms pmtu 1500
1: 2a00:8642:42::2 2.566ms
1: 2a00:8642:42::2 2.511ms
2: gw.friends.steffann.nl 2.241ms
3: ccr2-ccr1.dc1.nogalliance.org 542.805ms asymm 2
4: no reply
5: no reply
6: no reply
7: no reply
8: 2001:850:507:8::2 21.720ms reached
Resume: pmtu 1500 hops 8 back 10 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 | * | - | - | - | |
| 3 | * | - | - | - | |
| 4 | * | - | - | - | |
| 5 | be47.core1.mil2.he.net 2001:470:e:69::2 | 12.1ms | 0% | AS6939 | HURRICANE - Hurricane Electric LLC, US |
| 6 | be1.core1.zrh2.he.net 2001:470:e:dd::2 | 14.1ms | 0% | AS6939 | HURRICANE - Hurricane Electric LLC, US |
| 7 | be10.core4.fra1.he.net 2001:470:e:153::1 | 18.5ms | 0% | AS6939 | HURRICANE - Hurricane Electric LLC, US |
| 8 | * | - | - | - | |
| 9 | * | - | - | - | |
| 10 | * | - | 0% | - | |
| 11 | * | - | 0% | - | |
| 12 | * | - | 0% | - | |
| 13 | 2001:850:507:8::2 | 22.6ms | 0% | AS8447 | A1TELEKOM-AT - A1 Telekom Austria AG, AT |
tracepath -6
1?: [LOCALHOST] 0.029ms pmtu 1500
1: no reply
2: no reply
3: no reply
4: no reply
5: be47.core1.mil2.he.net 12.788ms
6: be1.core1.zrh2.he.net 13.948ms
7: be10.core4.fra1.he.net 20.381ms
8: no reply
9: no reply
10: no reply
11: no reply
12: no reply
13: 2001:850:507:8::2 22.790ms reached
Resume: pmtu 1500 hops 13 back 10 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 | 2a00:ee1:800:9::1 | 1.7ms | 90% | AS5603 | SIOL-NET - Telekom Slovenije, d.d., SI |
| 4 | 2a00:ee0:1:15::2 | 2.0ms | 0% | AS5603 | SIOL-NET - Telekom Slovenije, d.d., SI |
| 5 | * | - | 0% | - | |
| 6 | * | - | 0% | - | |
| 7 | * | - | 0% | - | |
| 8 | * | - | 0% | - | |
| 9 | 2001:850:507:8::2 | 17.3ms | 0% | AS8447 | A1TELEKOM-AT - A1 Telekom Austria AG, AT |
Rate-limited ICMPv6: hop 3 (loss between 5% and 95% across mtr cycles - the router replies but only sometimes).
tracepath -6
1?: [LOCALHOST] 0.025ms pmtu 9000
1: fw1-lju.6connect.com 7.345ms
1: fw1-lju.6connect.com 0.898ms
2: no reply
3: no reply
4: 2a00:ee0:1:10::2 1.758ms asymm 3
5: 2a00:ee0:1:15::2 1.957ms pmtu 1500
5: no reply
6: no reply
7: no reply
8: no reply
9: 2001:850:507:8::2 17.361ms reached
Resume: pmtu 1500 hops 9 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 | * | - | - | - | |
| 2 | 2a01:260:1::225 | 5.1ms | 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 | 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 | 2.1ms | - | AS34779 | T-2-AS - T-2, d.o.o., SI |
| 5 | 100ge0-0-0-31.core1.vie1.he.net 2001:470:0:4a8::1 | 13.1ms | 10% | AS6939 | HURRICANE - Hurricane Electric LLC, US |
| 6 | be3.core1.prg1.he.net 2001:470:e:a7::1 | 16.2ms | 0% | AS6939 | HURRICANE - Hurricane Electric LLC, US |
| 7 | * | - | 50% | - | |
| 8 | * | - | - | - | |
| 9 | * | - | 0% | - | |
| 10 | * | - | 0% | - | |
| 11 | * | - | 0% | - | |
| 12 | * | - | 0% | - | |
| 13 | 2001:850:507:8::2 | 23.6ms | 0% | AS8447 | A1TELEKOM-AT - A1 Telekom Austria AG, AT |
Rate-limited ICMPv6: hop 5, hop 7 (loss between 5% and 95% across mtr cycles - the router replies but only sometimes).
tracepath -6
1?: [LOCALHOST] 0.027ms pmtu 1500
1: 2a01:261:313:b814::1 1.883ms
1: no reply
2: 2a01:260:1::225 4.908ms
3: 2a01-260-1-1--9a.core6.t-2.net 3.985ms
4: 2a01-260-1-1--38.core6.t-2.net 2.747ms asymm 3
5: 100ge0-0-0-31.core1.vie1.he.net 12.620ms
6: be3.core1.prg1.he.net 15.805ms
7: be8.core4.fra1.he.net 35.761ms
8: be8.core4.fra1.he.net 37.503ms asymm 7
9: no reply
10: no reply
11: no reply
12: no reply
13: 2001:850:507:8::2 22.302ms reached
Resume: pmtu 1500 hops 13 back 9