AS overview
Test target: 2a01:190:1764:150::30 · ns.nextlayer.at · address space: mixed · prefixes announced: 13
prefix(es): 2a0b:5a40::/29, 2a04:9301::/32, 2a01:190::/29, 2a0d:4d80::/29, 2a05:dd80::/29, 2a04:9304::/30, 2001:67c:22a0::/48, 2001:4b60:100::/48 (+5 more)
Targets & per-vantage-point probe results (7 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 | ||
2a01:190:15e8:100::30ns3.nextlayer.com | NS | ✓ | ✓ | ? | ? | - | ✓ | ✓ | ? | ? | - | ✓ | ✓ | ? | ? | - | ✓ | ✓ | ? | ? | - | ✓ | ✓ | ? | ? | - | ✓ | ✓ | ? | ? | - | ✓ | ✓ | ? | ? | - |
2a01:190:15e8:101::203nextlayer.at | DMARC | ✓ | ✓ | open | open | ✓ | ✓ | ✓ | open | open | ✓ | ✓ | ✓ | open | open | ✓ | ✓ | ✓ | open | open | ✓ | ✓ | ✓ | open | open | ✓ | ✓ | ✓ | open | open | ✓ | ✓ | ✓ | open | open | ✓ |
2a01:190:1764:150::28smtp.nextlayer.at | drv | ✓ | ✓ | ? | ? | - | ✓ | ✓ | ? | ? | - | ✓ | ✓ | ? | ? | - | ✓ | ✓ | ? | ? | - | ✓ | ✓ | ? | ? | - | ✓ | ✓ | ? | ? | - | ✓ | ✓ | ? | ? | - |
2a01:190:1764:150::30ns.nextlayer.at | NS | ✓ | ✓ | ? | ? | - | ✓ | ✓ | ? | ? | - | ✓ | ✓ | ? | ? | - | ✓ | ✓ | ? | ? | - | ✓ | ✓ | ? | ? | - | ✓ | ✓ | ? | ? | - | ✓ | ✓ | ? | ? | - |
2a01:190:1764:150::4dns1.nextlayer.at | drv | ✓ | ✓ | ? | ? | - | ✓ | ✓ | ? | ? | - | ✓ | ✓ | ? | ? | - | ✓ | ✓ | ? | ? | - | ✓ | ✓ | ? | ? | - | ✓ | ✓ | ? | ? | - | ✓ | ✓ | ? | ? | - |
2a01:190:1764:151::30ns2.nextlayer.at | NS | ✓ | ✓ | ? | ? | - | ✓ | ✓ | ? | ? | - | ✓ | ✓ | ? | ? | - | ✓ | ✓ | ? | ? | - | ✓ | ✗ | ? | ? | - | ✓ | ✓ | ? | ? | - | ✓ | ✓ | ? | ? | - |
2a01:190:1764:151::4dns2.nextlayer.at | drv | ✓ | ✓ | ? | ? | - | ✓ | ✓ | ? | ? | - | ✓ | ✓ | ? | ? | - | ✓ | ✓ | ? | ? | - | ✓ | ✓ | ? | ? | - | ✓ | ✓ | ? | ? | - | ✓ | ✓ | ? | ? | - |
VIX / AAIX / SAIX / TIROL-IX / ERA-IX peering
VIX / AAIX / SAIX / TIROL-IX / ERA-IX member - Selective peering, peering member, since 2010-07-29. IPv6 LAN: 2001:7f8:30:0:2:1:0:1764. Locations: -.
RPKI & ASPA
7 of 13 prefix(es) covered by a valid ROA, 6 not-found.
| Prefix | RPKI state | Reason | Covering VRP(s) |
|---|---|---|---|
2a0b:5a40::/29 | - not-found | no covering VRP | |
2a04:9301::/32 | ✓ valid | matched VRP (correct origin, length within maxLength) | AS1764 /29 maxLen 32 (ripe) |
2a01:190::/29 | ✓ valid | matched VRP (correct origin, length within maxLength) | AS1764 /29 maxLen 32 (ripe) |
2a0d:4d80::/29 | - not-found | no covering VRP | |
2a05:dd80::/29 | ✓ valid | matched VRP (correct origin, length within maxLength) | AS1764 /29 maxLen 32 (ripe) |
2a04:9304::/30 | ✓ valid | matched VRP (correct origin, length within maxLength) | AS1764 /29 maxLen 32 (ripe) |
2001:67c:22a0::/48 | - not-found | no covering VRP | |
2001:4b60:100::/48 | ✓ valid | matched VRP (correct origin, length within maxLength) | AS1764 /48 maxLen 48 (ripe); AS28857 /32 maxLen 32 (ripe) |
2a04:140::/29 | - not-found | no covering VRP | |
2001:67c:2600::/48 | - not-found | no covering VRP | |
2a03:e600::/29 | ✓ valid | matched VRP (correct origin, length within maxLength) | AS1764 /29 maxLen 32 (ripe) |
2a04:9302::/31 | ✓ valid | matched VRP (correct origin, length within maxLength) | AS1764 /29 maxLen 32 (ripe) |
2a10:9a80:dc01::/48 | - not-found | no covering VRP |
Random-IP probe (yarrp) into the AS' prefixes
At least one router inside AS1764's announced prefix replied during the random-target probe. Hop(s): 2a01:190:15fe::1000, 2a01:190:15ff:5f::2, 2a01:190:1700:104::2, 2a01:190:1700:24::2, 2a01:190:1701::289. 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 2026-09-23T13:33:35Z
tracepath6 per-hop PMTU drilldown
For each target where Type 2 verdicts disagreed across vantages, tracepath -6 ran from every vantage to capture per-hop PMTU evolution along that vantage's actual forward path. A pmtu change entry on a hop means that hop's router generated a PTB and we observed the shrink; absence of any change combined with a not_honored verdict suggests a router somewhere downstream is silently dropping >MTU packets (an RFC 4890 violation) rather than sending a PTB.
Target 2a01:190:15e8:101::203
amsterdam - verdict ?
(no hops captured)
belgrade - verdict honored
verdict = honored; final pmtu = 1500
| # | hop IP | pmtu change |
|---|---|---|
| 1 | <span class='muted'>no reply</span> | |
| 2 | 2001:7f8:1e::4 | |
| 3 | 2001:7f8:30:0:2:1:0:8218 | |
| 4 | 2001:1b48:2:107::4:2 | |
| 5 | 2a01:190:15e8:101::203 |
berlin - verdict honored
verdict = honored; final pmtu = 1500
| # | hop IP | pmtu change |
|---|---|---|
| 1 | <span class='muted'>no reply</span> | |
| 2 | 2a06:d1c0::dead:beef:1c02 | |
| 3 | 2001:7f8:19:1::201a:1 | |
| 4 | 2001:1b48:2:2::6:2 | |
| 5 | 2001:1b48:2:107::4:2 | |
| 6 | 2a01:190:15e8:101::203 |
duseldorf - verdict honored
verdict = honored; final pmtu = 1500
| # | hop IP | pmtu change |
|---|---|---|
| 1 | <span class='muted'>no reply</span> | |
| 2 | 2001:4ba0:92f4:3::1 | |
| 3 | <span class='muted'>no reply</span> | |
| 4 | 2001:4ba0:ffe9:109::2 | |
| 5 | 2001:4ba0:ffe9:4f::1 | |
| 6 | 2001:7f8::201a:0:1 | |
| 7 | 2001:1b48:2:3::36:2 | |
| 8 | 2001:1b48:2:2::e:2 | |
| 9 | 2a01:190:15e8:101::203 |
go6lab - verdict not_honored
verdict = not_honored; final pmtu = 1500
| # | hop IP | pmtu change |
|---|---|---|
| 1 | <span class='muted'>no reply</span> | |
| 2 | 2a00:8642:1000:f000::1 | |
| 3 | 2a00:8642:dc1:2::b | |
| 4 | 2001:7f8:1::a500:1764:1 | |
| 5 | 2a01:190:1764:800a::1 | |
| 6 | <span class='muted'>no reply</span> | |
| 7 | 2a01:190:15e8:101::203 |
karsolink - verdict honored
verdict = honored; final pmtu = 1500
| # | hop IP | pmtu change |
|---|---|---|
| 1 | <span class='muted'>no reply</span> | |
| 2 | 2a12:d8c0:109f:121::a1 | |
| 3 | 2a12:d8c0:101f:103::1 | |
| 4 | 2001:7f8:b:100:1d1:a5d0:8218:208 | |
| 5 | 2001:1b48:2:c::1:1 | |
| 6 | 2001:1b48:2:2::9:1 | |
| 7 | 2001:1b48:2:107::19:2 | |
| 8 | 2a01:190:15e8:101::203 |
odin - verdict honored
verdict = honored; final pmtu = 1500
| # | hop IP | pmtu change |
|---|---|---|
| 1 | <span class='muted'>no reply</span> | |
| 2 | 2607:fae0:a000:2::2 | |
| 3 | 2a00:ee1:800:9::1 | |
| 4 | 2a00:ee0:1:10::2 | |
| 5 | 2a00:ee0:1:10::2 | |
| 6 | 2001:1b48:2:2::6:2 | |
| 7 | 2001:1b48:2:107::4:2 | |
| 8 | 2a01:190:15e8:101::203 |
t2 - verdict honored
verdict = honored; final pmtu = 1500
| # | hop IP | pmtu change |
|---|---|---|
| 1 | <span class='muted'>no reply</span> | |
| 2 | 2a01:260:1::225 | |
| 3 | 2a01:260:1:1::9c | |
| 4 | 2a01:260:1:1::25 | |
| 5 | 2001:7f8:30:0:2:1:0:8218 | |
| 6 | 2001:1b48:2:107::4:2 | |
| 7 | 2a01:190:15e8:101::203 |
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) 13.3ms
4/4
Echo 1500B (DF) 13.2ms
no
Type 1 dest-unreach
-
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 | 0.6ms | 0% | AS13004 | SOX - Serbian Open Exchange DOO, RS |
| 4 | 2a02:2d8:0:a00e:232a | 12.7ms | 0% | - | |
| 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 | 51.6ms | 0% | - | NA |
| 6 | ip6-ae1-0-r32.inx.vie.nextlayer.net 2a01:190:1764:800c::1 | 13.2ms | 0% | AS1764 | NEXTLAYER-AS - Next Layer Telekommunikationsdienstleistungs- und Beratungs GmbH, AT |
| 7 | irb-10-pe201.inx.vie.sys.nextlayer.net 2001:678:c1c:8011::2 | 11.5ms | 0% | - | NA |
| 8 | * | - | 0% | - | |
| 9 | * | - | - | - | |
| 10 | * | - | - | - | |
| 11 | * | - | - | - | |
| 12 | * | - | - | - | |
| 13 | * | - | - | - | |
| 14 | * | - | - | - | |
| 15 | * | - | - | - | |
| 16 | * | - | - | - |
tracepath -6
1?: [LOCALHOST] 0.013ms pmtu 1500
1: _gateway 0.498ms
1: _gateway 0.376ms
2: sox-pn.sox.rs 0.763ms
3: 2001:7f8:1e:8::3d 0.690ms asymm 2
4: ae8-930.RT.IRX.VIE.AT.retn.net 11.171ms asymm 3
5: vix-ip6-et-0-1-2-0-r60.inx.vie.at.nextlayer.net 13.116ms asymm 3
6: ip6-ae1-0-r32.inx.vie.nextlayer.net 13.281ms asymm 7
7: irb-10-pe201.inx.vie.sys.nextlayer.net 11.905ms asymm 8
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
4/4
Echo small (56B) 22.1ms
4/4
Echo 1500B (DF) 22.1ms
no
Type 1 dest-unreach
-
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 | 0.3ms | 0%* | AS59645 | WYBT-NET - Tobias Fiebig, DE |
| 2 | ae0-2453.cr10.ber01.lwlcom.net 2a06:d1c0::dead:beef:1c02 | 0.8ms | 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 | 10.2ms | 0% | AS50629 | LWLCOM - LWLcom GmbH, DE |
| 5 | ae0-10.cr10.fra06.lwlcom.net 2a00:c380:b200:230::236 | 10.1ms | 0% | AS50629 | LWLCOM - LWLcom GmbH, DE |
| 6 | nextlayer.peering.cz 2001:7f8:7f::c:31 | 18.2ms | 0% | - | NA |
| 7 | ip6-ae2-0-r32.inx.vie.nextlayer.net 2a01:190:1764:800b::1 | 21.8ms | 0% | AS1764 | NEXTLAYER-AS - Next Layer Telekommunikationsdienstleistungs- und Beratungs GmbH, AT |
| 8 | irb-10-pe201.inx.vie.sys.nextlayer.net 2001:678:c1c:8011::2 | 21.7ms | 0% | - | NA |
| 9 | * | - | 0% | - | |
| 10 | * | - | - | - | |
| 11 | * | - | - | - | |
| 12 | * | - | - | - | |
| 13 | * | - | - | - | |
| 14 | * | - | - | - | |
| 15 | * | - | - | - | |
| 16 | * | - | - | - |
tracepath -6
1?: [LOCALHOST] 0.025ms pmtu 1500
1: xe-0-0-13-178.gw01.ber01.as59645.net 0.712ms
1: xe-0-0-13-178.gw01.ber01.as59645.net 0.717ms
2: ae0-2453.cr10.ber01.lwlcom.net 1.132ms
3: ae0-150.cr10.fra01.lwlcom.net 10.846ms asymm 7
4: ae0-100.cr10.fra02.lwlcom.net 10.926ms asymm 8
5: ae0-10.cr10.fra06.lwlcom.net 10.640ms asymm 7
6: nextlayer.peering.cz 18.883ms asymm 8
7: ip6-ae2-0-r32.inx.vie.nextlayer.net 22.359ms asymm 13
8: irb-10-pe201.inx.vie.sys.nextlayer.net 21.960ms asymm 14
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
4/4
Echo small (56B) 15.4ms
4/4
Echo 1500B (DF) 15.4ms
no
Type 1 dest-unreach
-
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 | 0.2ms | 0%* | AS59645 | WYBT-NET - Tobias Fiebig, DE |
| 2 | eth1-0-12-h5594.edge5-dus1.bb.wiit.network 2001:4ba0:92f4:3::1 | 3.5ms | 0% | AS24961 | MYLOC-AS - WIIT AG, DE |
| 3 | * | - | - | - | |
| 4 | lag11.core3-dus1.bb.wiit.network 2001:4ba0:ffe9:115::3 | 0.1ms | 0% | AS24961 | MYLOC-AS - WIIT AG, DE |
| 5 | lag8.core1-dus-ix.bb.wiit.network 2001:4ba0:ffe9:8::2 | 0.3ms | 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-ae1-0-r32.inx.vie.nextlayer.net 2a01:190:1764:800c::1 | 15.3ms | 0% | AS1764 | NEXTLAYER-AS - Next Layer Telekommunikationsdienstleistungs- und Beratungs GmbH, AT |
| 8 | irb-10-pe201.inx.vie.sys.nextlayer.net 2001:678:c1c:8011::2 | 15.4ms | 0% | - | NA |
| 9 | * | - | 0% | - | |
| 10 | * | - | - | - | |
| 11 | * | - | - | - | |
| 12 | * | - | - | - | |
| 13 | * | - | - | - | |
| 14 | * | - | - | - | |
| 15 | * | - | - | - | |
| 16 | * | - | - | - |
tracepath -6
1?: [LOCALHOST] 0.021ms pmtu 1500
1: xe-0-0-12-142.gw01.dus01.as59645.net 0.260ms
1: xe-0-0-12-142.gw01.dus01.as59645.net 0.202ms
2: eth1-0-12-h5594.edge5-dus1.bb.wiit.network 10.311ms
3: no reply
4: lag11.core3-dus1.bb.wiit.network 0.410ms
5: lag8.core1-dus-ix.bb.wiit.network 0.391ms
6: de-cix.r60.inx.fra.de.nextlayer.net 3.851ms
7: ip6-ae1-0-r32.inx.vie.nextlayer.net 15.553ms asymm 12
8: irb-10-pe201.inx.vie.sys.nextlayer.net 15.378ms asymm 13
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
4/4
Echo small (56B) 22.1ms
4/4
Echo 1500B (DF) 24.9ms
no
Type 1 dest-unreach
-
TCP responds on
Path (traceroute + mtr + PTR)
| # | IP / PTR | RTT | mtr loss | AS | AS holder |
|---|---|---|---|---|---|
| 1 | 2a00:8642:42::2 | 0.8ms | 0% | AS203993 | GNA-DC1-AS - S.J.M. Steffann, NL |
| 2 | gw.friends.steffann.nl 2a00:8642:1000:f000::1 | 2.9ms | 0%* | AS203993 | GNA-DC1-AS - S.J.M. Steffann, NL |
| 3 | ccr2-ccr1.dc1.nogalliance.org 2a00:8642:dc1:2::b | 2.0ms | 10% | AS203993 | GNA-DC1-AS - S.J.M. Steffann, NL |
| 4 | ams-ix.r06.nikh.ams.nl.nextlayer.net 2001:7f8:1::a500:1764:1 | 20.8ms | 0% | - | NA |
| 5 | ip6-ae2-0-r32.inx.vie.nextlayer.net 2a01:190:1764:800b::1 | 21.8ms | 0% | AS1764 | NEXTLAYER-AS - Next Layer Telekommunikationsdienstleistungs- und Beratungs GmbH, AT |
| 6 | * | - | - | - | |
| 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] 0.068ms pmtu 1500
1: 2a00:8642:42::2 3.813ms
1: 2a00:8642:42::2 2.474ms
2: gw.friends.steffann.nl 2.600ms
3: ccr2-ccr1.dc1.nogalliance.org 3.644ms asymm 2
4: ams-ix.r06.nikh.ams.nl.nextlayer.net 23.999ms asymm 8
5: ip6-ae2-0-r32.inx.vie.nextlayer.net 21.986ms asymm 11
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 ITA host (Karsolink) openRFC 4890 ✓
filter likely at: (none) · min PMTU on path: 1500
4/4
Echo small (56B) 18.8ms
3/4
Echo 1500B (DF) 19.0ms
no
Type 1 dest-unreach
-
TCP responds on
Path (traceroute + mtr + PTR)
| # | IP / PTR | RTT | mtr loss | AS | AS holder |
|---|---|---|---|---|---|
| 1 | karsolink-01.net.karsolink.com 2a12:d8c0:105a:9001::1 | 0.2ms | - | AS204471 | KARSOLINK - 2S Computers SRL, IT |
| 2 | 2a12:d8c0:109f:121::a1 | 0.3ms | - | AS204471 | KARSOLINK - 2S Computers SRL, IT |
| 3 | 2a12:d8c0:101f:6::1 | 9.7ms | - | AS204471 | KARSOLINK - 2S Computers SRL, IT |
| 4 | * | - | - | - | |
| 5 | be47.core1.mil2.he.net 2001:470:e:69::2 | 11.6ms | 0% | AS6939 | HURRICANE - Hurricane Electric LLC, US |
| 6 | be1.core1.zrh2.he.net 2001:470:e:dd::2 | 15.5ms | 0% | AS6939 | HURRICANE - Hurricane Electric LLC, US |
| 7 | * | - | - | - | |
| 8 | be1.core3.zrh3.he.net 2001:470:0:7e0::2 | 13.6ms | 0% | AS6939 | HURRICANE - Hurricane Electric LLC, US |
| 9 | * | - | - | - | |
| 10 | ip6-ae2-0-r32.inx.vie.nextlayer.net 2a01:190:1764:800b::1 | 18.0ms | 0% | AS1764 | NEXTLAYER-AS - Next Layer Telekommunikationsdienstleistungs- und Beratungs GmbH, AT |
| 11 | * | - | - | - | |
| 12 | * | - | 0% | - | |
| 13 | * | - | - | - | |
| 14 | * | - | - | - | |
| 15 | * | - | - | - | |
| 16 | * | - | - | - |
tracepath -6
1?: [LOCALHOST] 0.010ms pmtu 1500
1: karsolink-01.net.karsolink.com 0.531ms
2: 2a12:d8c0:109f:121::a1 0.495ms
3: 2a12:d8c0:101f:6::1 10.134ms
4: no reply
5: be47.core1.mil2.he.net 13.566ms
6: be1.core1.zrh2.he.net 15.007ms
7: no reply
8: be1.core3.zrh3.he.net 15.924ms
9: no reply
10: ip6-ae1-0-r32.inx.vie.nextlayer.net 19.076ms asymm 11
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
4/4
Echo small (56B) 16.3ms
4/4
Echo 1500B (DF) 16.1ms
no
Type 1 dest-unreach
-
TCP responds on
Path (traceroute + mtr + PTR)
| # | IP / PTR | RTT | mtr loss | AS | AS holder |
|---|---|---|---|---|---|
| 1 | fw1-lju.6connect.com 2607:fae0:a000::2 | 0.3ms | 0%* | AS8038 | 6CONNECT - 6connect, Inc., US |
| 2 | ccr-to-fw-ccr1-gw-lju.6connect.com 2607:fae0:a000:2::2 | 0.7ms | - | AS8038 | 6CONNECT - 6connect, Inc., US |
| 3 | 2a00:ee1:800:9::1 | 2.7ms | 40% | 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 | de-cix.r60.inx.fra.de.nextlayer.net 2001:7f8::6e4:0:1 | 15.3ms | 0% | - | NA |
| 6 | ip6-ae2-0-r32.inx.vie.nextlayer.net 2a01:190:1764:800b::1 | 16.7ms | 0% | AS1764 | NEXTLAYER-AS - Next Layer Telekommunikationsdienstleistungs- und Beratungs GmbH, AT |
| 7 | * | - | - | - | |
| 8 | * | - | 0% | - | |
| 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 0.535ms
1: fw1-lju.6connect.com 0.587ms
2: no reply
3: no reply
4: 2a00:ee0:1:10::2 1.700ms asymm 3
5: 2a00:ee0:1:10::2 1.669ms pmtu 1500
5: de-cix.r60.inx.fra.de.nextlayer.net 15.596ms asymm 6
6: ip6-ae1-0-r32.inx.vie.nextlayer.net 16.310ms asymm 9
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
4/4
Echo small (56B) 9.3ms
4/4
Echo 1500B (DF) 9.3ms
no
Type 1 dest-unreach
-
TCP responds on
Path (traceroute + mtr + PTR)
| # | IP / PTR | RTT | mtr loss | AS | AS holder |
|---|---|---|---|---|---|
| 1 | 2a01:261:313:b814::1 | 0.4ms | 0%* | AS34779 | T-2-AS - T-2, d.o.o., SI |
| 2 | 2a01:260:1::225 | 4.9ms | 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 | 2.1ms | 0%* | AS34779 | T-2-AS - T-2, d.o.o., SI |
| 4 | * | - | - | - | |
| 5 | 100ge0-0-0-31.core1.vie1.he.net 2001:470:0:4a8::1 | 11.2ms | 0% | AS6939 | HURRICANE - Hurricane Electric LLC, US |
| 6 | 100ge0-0-0-31.core1.vie1.he.net 2001:470:0:4a8::1 | 11.0ms | 0% | AS6939 | HURRICANE - Hurricane Electric LLC, US |
| 7 | ip6-ae2-0-r32.inx.vie.nextlayer.net 2a01:190:1764:800b::1 | 9.1ms | 0% | AS1764 | NEXTLAYER-AS - Next Layer Telekommunikationsdienstleistungs- und Beratungs GmbH, AT |
| 8 | ip6-ae1-0-r32.inx.vie.nextlayer.net 2a01:190:1764:800c::1 | 9.6ms | 0% | AS1764 | NEXTLAYER-AS - Next Layer Telekommunikationsdienstleistungs- und Beratungs GmbH, AT |
| 9 | irb-10-pe201.inx.vie.sys.nextlayer.net 2001:678:c1c:8011::2 | 9.7ms | 0% | - | NA |
| 10 | * | - | - | - | |
| 11 | * | - | - | - | |
| 12 | * | - | - | - | |
| 13 | * | - | - | - | |
| 14 | * | - | - | - | |
| 15 | * | - | - | - | |
| 16 | * | - | - | - |
tracepath -6
1?: [LOCALHOST] 0.027ms pmtu 1500
1: 2a01:261:313:b814::1 1.689ms
2: 2a01:260:1::225 10.107ms
3: 2a01-260-1-1--9a.core6.t-2.net 2.587ms
4: 2a01-260-1-1--38.core6.t-2.net 3.375ms asymm 3
5: 100ge0-0-0-31.core1.vie1.he.net 12.769ms
6: vix-ip6-et-0-1-2-0-r60.inx.vie.at.nextlayer.net 10.046ms asymm 5
7: ip6-ae1-0-r32.inx.vie.nextlayer.net 11.103ms asymm 9
8: irb-10-pe201.inx.vie.sys.nextlayer.net 10.324ms asymm 10
9: irb-10-pe201.inx.vie.sys.nextlayer.net 10.392ms asymm 10
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