AS overview
Test target: 2001:41a8:20:fffe::3 · dns.seabone.net · address space: mixed · prefixes announced: 13
prefix(es): 2001:41a8:28:8::/64, 2602:f692:c::/48, 2001:41a8:47:a00::/56, 2001:41a8:47:600::/56, 2001:41a8:47:400::/56, 2001:41a8:47:700::/56, 2001:41a8:47:900::/56, 2001:41a8:47:500::/56 (+5 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 | ||
2001:41a8:20:fffe::3dns.seabone.net | NS | ✓ | ✓ | refused | refused | ✓ | ✓ | ✓ | refused | refused | ✓ | ✓ | ✓ | refused | refused | ✓ | ✓ | ✓ | ? | ? | ✓ | ✓ | ✓ | refused | refused | - | ✓ | ✓ | refused | refused | ✓ | ✓ | ✓ | refused | refused | ✓ |
RPKI & ASPA
13 of 13 prefix(es) covered by a valid ROA.
| Prefix | RPKI state | Reason | Covering VRP(s) |
|---|---|---|---|
2001:41a8:28:8::/64 | ✓ valid | matched VRP (correct origin, length within maxLength) | AS6762 /32 maxLen 64 (ripe) |
2602:f692:c::/48 | ✓ valid | matched VRP (correct origin, length within maxLength) | AS6762 /48 maxLen 48 (arin) |
2001:41a8:47:a00::/56 | ✓ valid | matched VRP (correct origin, length within maxLength) | AS6762 /32 maxLen 64 (ripe) |
2001:41a8:47:600::/56 | ✓ valid | matched VRP (correct origin, length within maxLength) | AS6762 /32 maxLen 64 (ripe) |
2001:41a8:47:400::/56 | ✓ valid | matched VRP (correct origin, length within maxLength) | AS6762 /32 maxLen 64 (ripe) |
2001:41a8:47:700::/56 | ✓ valid | matched VRP (correct origin, length within maxLength) | AS6762 /32 maxLen 64 (ripe) |
2001:41a8:47:900::/56 | ✓ valid | matched VRP (correct origin, length within maxLength) | AS6762 /32 maxLen 64 (ripe) |
2001:41a8:47:500::/56 | ✓ valid | matched VRP (correct origin, length within maxLength) | AS6762 /32 maxLen 64 (ripe) |
2800:870::/32 | ✓ valid | matched VRP (correct origin, length within maxLength) | AS6762 /32 maxLen 32 (lacnic) |
2001:41a8::/32 | ✓ valid | matched VRP (correct origin, length within maxLength) | AS6762 /32 maxLen 64 (ripe) |
2001:41a8:6:100::/56 | ✓ valid | matched VRP (correct origin, length within maxLength) | AS6762 /32 maxLen 64 (ripe) |
2001:41a8:47:b00::/56 | ✓ valid | matched VRP (correct origin, length within maxLength) | AS6762 /32 maxLen 64 (ripe) |
2001:41a8:45:400::/56 | ✓ valid | matched VRP (correct origin, length within maxLength) | AS6762 /32 maxLen 64 (ripe) |
Random-IP probe (yarrp) into the AS' prefixes
At least one router inside AS6762's announced prefix replied during the random-target probe. Hop(s): 2001:41a8:20:2::35, 2001:41a8:20::9, 2001:41a8:20::a, 2001:41a8:40::8, 2001:41a8:600:2::1d5. 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 2026-09-23T11:59:42Z
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
4/4
Echo small (56B) 43.9ms
4/4
Echo 1500B (DF) 43.9ms
yes
Type 1 dest-unreach
443,80
TCP responds on
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 | 2001:67c:128c::699 | 17.1ms | 0% | - | NA |
| 5 | dns.seabone.net 2001:41a8:20:fffe::3 | 53.5ms | 0% | AS6762 | SEABONE-NET - TELECOM ITALIA SPARKLE S.p.A., IT |
tracepath -6
1?: [LOCALHOST] 0.009ms pmtu 1500
1: _gateway 1.191ms
1: _gateway 0.614ms
2: sox-pn.sox.rs 1.087ms
3: 2001:7f8:1e:8::3d 0.924ms asymm 2
4: 2001:67c:128c::699 18.230ms
5: dns.seabone.net 51.071ms reached
Resume: pmtu 1500 hops 5 back 7 From DE host (Berlin) openRFC 4890 ✓
filter likely at: (none) · min PMTU on path: 1500
4/4
Echo small (56B) 19.9ms
4/4
Echo 1500B (DF) 19.9ms
yes
Type 1 dest-unreach
443,80
TCP responds on
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 | ae0-150.cr10.fra01.lwlcom.net 2a00:c380:b200:230::174 | 10.1ms | 0% | AS50629 | LWLCOM - LWLcom GmbH, DE |
| 4 | ae6-3257.cr5-fra2.ip6.gtt.net 2001:668:0:3:ffff:1:0:3d5d | 9.4ms | 0% | AS3257 | GTT-BACKBONE - GTT Communications Inc., US |
| 5 | 2001:668:0:2:ffff:0:8d88:6be9 | 9.6ms | 0% | AS3257 | GTT-BACKBONE - GTT Communications Inc., US |
| 6 | 2001:41a8:600:2::1d5 | 21.8ms | 0% | AS6762 | SEABONE-NET - TELECOM ITALIA SPARKLE S.p.A., IT |
| 7 | mil7-loop0-v6.mil.seabone.net 2001:41a8:20::7 | 77.2ms | 0% | AS6762 | SEABONE-NET - TELECOM ITALIA SPARKLE S.p.A., IT |
| 8 | dns.seabone.net 2001:41a8:20:fffe::3 | 33.5ms | 0% | AS6762 | SEABONE-NET - TELECOM ITALIA SPARKLE S.p.A., IT |
tracepath -6
1?: [LOCALHOST] 0.030ms pmtu 1500
1: xe-0-0-13-178.gw01.ber01.as59645.net 1.007ms
1: xe-0-0-13-178.gw01.ber01.as59645.net 0.733ms
2: ae0-2453.cr10.ber01.lwlcom.net 1.323ms
3: ae0-150.cr10.fra01.lwlcom.net 10.991ms asymm 7
4: ae6-3257.cr5-fra2.ip6.gtt.net 10.195ms asymm 9
5: 2001:668:0:2:ffff:0:8d88:6be9 11.120ms asymm 10
6: 2001:41a8:600:2::1d5 11.663ms
7: mil7-loop0-v6.mil.seabone.net 65.890ms asymm 5
8: dns.seabone.net 25.183ms reached
Resume: pmtu 1500 hops 8 back 6 From DE host (Düsseldorf) openRFC 4890 ✓
filter likely at: (none) · min PMTU on path: 1500
4/4
Echo small (56B) 13.7ms
4/4
Echo 1500B (DF) 13.8ms
yes
Type 1 dest-unreach
443,80
TCP responds on
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 | 0.1ms | 0%* | AS59645 | WYBT-NET - Tobias Fiebig, DE |
| 2 | eth1-0-12-h5594.edge5-dus1.bb.wiit.network 2001:4ba0:92f4:3::1 | 2.6ms | 0% | AS24961 | MYLOC-AS - WIIT AG, DE |
| 3 | lag13.agr3-dus3.bb.wiit.network 2001:4ba0:ffe9:7d::1 | 1.6ms | 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 | * | - | 0% | - | |
| 6 | lo0.0.edge8.Frankfurt1.level3.net 2001:4c08::8e | 4.7ms | 10% | AS3356 | LEVEL3 - Level 3 Parent, LLC, US |
| 7 | 2001:41a8:600:2::3a1 | 4.3ms | 0% | AS6762 | SEABONE-NET - TELECOM ITALIA SPARKLE S.p.A., IT |
| 8 | mil7-loop0-v6.mil.seabone.net 2001:41a8:20::7 | 13.5ms | 0% | AS6762 | SEABONE-NET - TELECOM ITALIA SPARKLE S.p.A., IT |
| 9 | dns.seabone.net 2001:41a8:20:fffe::3 | 22.4ms | 0% | AS6762 | SEABONE-NET - TELECOM ITALIA SPARKLE S.p.A., IT |
Rate-limited ICMPv6: hop 6 (loss between 5% and 95% across mtr cycles - the router replies but only sometimes).
tracepath -6
1?: [LOCALHOST] 0.016ms pmtu 1500
1: xe-0-0-12-142.gw01.dus01.as59645.net 0.413ms
1: xe-0-0-12-142.gw01.dus01.as59645.net 0.428ms
2: eth1-0-12-h5594.edge5-dus1.bb.wiit.network 2.100ms
3: no reply
4: lag30.core3-dus1.bb.wiit.network 0.379ms
5: no reply
6: lo0.0.edge8.Frankfurt1.level3.net 4.882ms asymm 7
7: 3741-3356-frf.sp.lumen.tech 5.296ms asymm 5
8: mil7-loop0-v6.mil.seabone.net 22.300ms asymm 4
9: dns.seabone.net 22.529ms reached
Resume: pmtu 1500 hops 9 back 5 From NL host (go6lab) openRFC 4890 ✓
filter likely at: (none) · min PMTU on path: 1500
4/4
Echo small (56B) 20.7ms
4/4
Echo 1500B (DF) 22.4ms
yes
Type 1 dest-unreach
-
TCP responds on
Path (traceroute + mtr + PTR)
| # | IP / PTR | RTT | mtr loss | AS | AS holder |
|---|---|---|---|---|---|
| 1 | 2a00:8642:42::2 | 2.6ms | 0% | AS203993 | GNA-DC1-AS - S.J.M. Steffann, NL |
| 2 | gw.friends.steffann.nl 2a00:8642:1000:f000::1 | 2.2ms | 0%* | AS203993 | GNA-DC1-AS - S.J.M. Steffann, NL |
| 3 | 2a00:1ca8:1::194 | 2.4ms | 0% | AS50673 | Serverius-as - Serverius Holding B.V., NL |
| 4 | 2a03:3f40::10:41 | 1.8ms | 0% | AS50673 | Serverius-as - Serverius Holding B.V., NL |
| 5 | 2001:978:2:40::3:1 | 3.8ms | 0% | AS174 | COGENT-174 - Cogent Communications, LLC, US |
| 6 | be3458.ccr42.ams03.atlas.cogentco.com 2001:550:0:1000::9a36:27b9 | 5.4ms | 0% | AS174 | COGENT-174 - Cogent Communications, LLC, US |
| 7 | be3500.rcr22.ams05.atlas.cogentco.com 2001:550:0:1000::9a36:3c1a | 4.3ms | 0% | AS174 | COGENT-174 - Cogent Communications, LLC, US |
| 8 | 2001:978:3::a6 | 12.8ms | 0% | AS174 | COGENT-174 - Cogent Communications, LLC, US |
| 9 | mil7-loop0-v6.mil.seabone.net 2001:41a8:20::7 | 29.7ms | 0% | AS6762 | SEABONE-NET - TELECOM ITALIA SPARKLE S.p.A., IT |
| 10 | dns.seabone.net 2001:41a8:20:fffe::3 | 25.2ms | 0% | AS6762 | SEABONE-NET - TELECOM ITALIA SPARKLE S.p.A., IT |
tracepath -6
1?: [LOCALHOST] 0.044ms pmtu 1500
1: 2a00:8642:42::2 1.895ms
1: 2a00:8642:42::2 2.680ms
2: no reply
3: 2a00:1ca8:1::194 3.973ms
4: 2a03:3f40::10:41 6.831ms
5: 2001:978:2:40::3:1 4.737ms
6: be3458.ccr42.ams03.atlas.cogentco.com 5.114ms
7: be3500.rcr22.ams05.atlas.cogentco.com 4.416ms
8: 2001:978:3::a6 10.397ms asymm 9
9: mil7-loop0-v6.mil.seabone.net 27.042ms asymm 8
10: dns.seabone.net 21.088ms reached
Resume: pmtu 1500 hops 10 back 9 From ITA host (Karsolink) openRFC 4890 ✓
filter likely at: (none) · min PMTU on path: 1500
4/4
Echo small (56B) 19.2ms
3/4
Echo 1500B (DF) 18.9ms
yes
Type 1 dest-unreach
443,80
TCP responds on
Path (traceroute + mtr + PTR)
| # | IP / PTR | RTT | mtr loss | AS | AS holder |
|---|---|---|---|---|---|
| 1 | * | - | - | - | |
| 2 | * | - | 0%* | - | |
| 3 | 2a12:d8c0:109f:106::a2 | 3.2ms | - | AS204471 | KARSOLINK - 2S Computers SRL, IT |
| 4 | 2a02:2d8:4:1815:232a | 3.5ms | 0% | - | |
| 5 | RT.EQX.FKT.DE.retn.net 2a02:2d8::57f5:e0a2 | 15.0ms | 0% | AS9002 | RETN-AS - RETN Limited, GB |
| 6 | 2001:41a8:600:2::269 | 16.1ms | 0% | AS6762 | SEABONE-NET - TELECOM ITALIA SPARKLE S.p.A., IT |
| 7 | mil7-loop0-v6.mil.seabone.net 2001:41a8:20::7 | 106.7ms | 0% | AS6762 | SEABONE-NET - TELECOM ITALIA SPARKLE S.p.A., IT |
tracepath -6
1?: [LOCALHOST] 0.012ms pmtu 1500
1: no reply
2: no reply
3: 2a12:d8c0:101f:6::1 9.911ms
4: ae8-202.RT.CLR.MIL.IT.retn.net 10.848ms asymm 5
5: RT.EQX.FKT.DE.retn.net 15.386ms
6: 2001:41a8:600:2::269 16.363ms
7: dns.seabone.net 11.216ms reached
Resume: pmtu 1500 hops 7 back 7 From SLO host (6connect) openRFC 4890 ✓
filter likely at: (none) · min PMTU on path: 1500
4/4
Echo small (56B) 10.2ms
4/4
Echo 1500B (DF) 9.9ms
yes
Type 1 dest-unreach
443,80
TCP responds on
Path (traceroute + mtr + PTR)
| # | IP / PTR | RTT | mtr loss | AS | AS holder |
|---|---|---|---|---|---|
| 1 | fw1-lju.6connect.com 2607:fae0:a000::2 | 0.2ms | 0%* | AS8038 | 6CONNECT - 6connect, Inc., US |
| 2 | ccr-to-fw-ccr1-gw-lju.6connect.com 2607:fae0:a000:2::2 | 0.5ms | 0%* | AS8038 | 6CONNECT - 6connect, Inc., US |
| 3 | 2a00:ee1:800:9::1 | 2.1ms | 0% | AS5603 | SIOL-NET - Telekom Slovenije, d.d., SI |
| 4 | 2a00:ee0:1:10::2 | 1.1ms | 0% | AS5603 | SIOL-NET - Telekom Slovenije, d.d., SI |
| 5 | 2001:41a8:20:2::169 | 8.8ms | 0% | AS6762 | SEABONE-NET - TELECOM ITALIA SPARKLE S.p.A., IT |
| 6 | mil7-loop0-v6.mil.seabone.net 2001:41a8:20::7 | 8.7ms | 0% | AS6762 | SEABONE-NET - TELECOM ITALIA SPARKLE S.p.A., IT |
| 7 | dns.seabone.net 2001:41a8:20:fffe::3 | 8.8ms | 0% | AS6762 | SEABONE-NET - TELECOM ITALIA SPARKLE S.p.A., IT |
tracepath -6
1?: [LOCALHOST] 0.016ms pmtu 9000
1: fw1-lju.6connect.com 0.560ms
1: fw1-lju.6connect.com 0.539ms
2: ccr-to-fw-ccr1-gw-lju.6connect.com 1.175ms
3: no reply
4: 2a00:ee0:1:10::2 1.602ms asymm 3
5: 2a00:ee0:1:10::2 1.998ms pmtu 1500
5: 2001:41a8:20:2::169 8.967ms asymm 6
6: mil7-loop0-v6.mil.seabone.net 9.170ms asymm 5
7: dns.seabone.net 9.546ms reached
Resume: pmtu 1500 hops 7 back 6 From SLO host (T-2) openRFC 4890 ✓
filter likely at: (none) · min PMTU on path: 1500
4/4
Echo small (56B) 35.3ms
4/4
Echo 1500B (DF) 38.1ms
yes
Type 1 dest-unreach
443,80
TCP responds on
Path (traceroute + mtr + PTR)
| # | IP / PTR | RTT | mtr loss | AS | AS holder |
|---|---|---|---|---|---|
| 1 | * | - | - | - | |
| 2 | 2a01:260:1::225 | 11.5ms | 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 | 10.4ms | 0%* | AS34779 | T-2-AS - T-2, d.o.o., SI |
| 4 | hurricane-electric.nikhef.nlsix.net 2001:7f8:13::a500:6939:1 | 43.8ms | 10% | - | NA |
| 5 | hurricane-electric.nikhef.nlsix.net 2001:7f8:13::a500:6939:1 | 43.8ms | - | - | NA |
| 6 | be6.core3.par2.he.net 2001:470:0:349::1 | 49.5ms | 30% | AS6939 | HURRICANE - Hurricane Electric LLC, US |
| 7 | be6.core3.par2.he.net 2001:470:0:349::1 | 49.5ms | 0% | AS6939 | HURRICANE - Hurricane Electric LLC, US |
| 8 | mil7-loop0-v6.mil.seabone.net 2001:41a8:20::7 | 42.2ms | 0% | AS6762 | SEABONE-NET - TELECOM ITALIA SPARKLE S.p.A., IT |
| 9 | * | - | 0% | - | |
| 10 | dns.seabone.net 2001:41a8:20:fffe::3 | 43.2ms | - | AS6762 | SEABONE-NET - TELECOM ITALIA SPARKLE S.p.A., IT |
Rate-limited ICMPv6: hop 4, hop 6 (loss between 5% and 95% across mtr cycles - the router replies but only sometimes).
tracepath -6
1?: [LOCALHOST] 0.028ms pmtu 1500
1: 2a01:261:313:b814::1 1.447ms
1: no reply
2: 2a01:260:1::225 4.543ms
3: 2a01-260-1-1--9c.core6.t-2.net 3.060ms
4: hurricane-electric.nikhef.nlsix.net 33.008ms
5: hurricane-electric.nikhef.nlsix.net 34.852ms asymm 4
6: be6.core3.par2.he.net 38.611ms
7: seabone-net-as6762.port-channel7.core2.par2.he.net 43.420ms asymm 8
8: seabone-net-as6762.port-channel7.core2.par2.he.net 61.185ms
9: mil7-loop0-v6.mil.seabone.net 32.079ms asymm 7
10: dns.seabone.net 34.816ms reached
Resume: pmtu 1500 hops 10 back 8