AS overview
Test target: 2a03:f080:1800::1:53 · dns2.register.gv.at · address space: mixed · prefixes announced: 1
prefix(es): 2a03:f080:1800::/48
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 | ||
2a03:f080:1800::1:53dns2.register.gv.at | NS | ✓ | ✓ | ? | ? | - | ✓ | ✓ | ? | ? | - | ✓ | ✓ | ? | ? | - | ✓ | ✓ | ? | ? | - | ✓ | ✓ | ? | ? | - | ✓ | ✓ | ? | ? | - | ✓ | ✓ | ? | ? | - |
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), DE host (Berlin), DE host (Düsseldorf), SLO host (6connect) - 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) |
|---|---|---|---|
2a03:f080:1800::/48 | - not-found | no covering VRP |
Random-IP probe (yarrp) into the AS' prefixes
At least one router inside AS47515's announced prefix replied during the random-target probe. Hop(s): 2a03:f080:1800:1::cafe. 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 2026-09-23T13:35:21Z
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) 13.1ms
4/4
Echo 1500B (DF) 13.1ms
no
Type 1 dest-unreach
-
TCP responds on
Path (traceroute + mtr + PTR)
| # | IP / PTR | RTT | mtr loss | AS | AS holder |
|---|---|---|---|---|---|
| 1 | 2a09:ab81::1 | 0.4ms | 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 | 12.6ms | 0% | - | |
| 5 | wien1.aco.net @VIX / AAIX / SAIX / TIROL-IX / ERA-IX 2001:7f8:30:0:1:1:0:1853 | 13.1ms | 0% | - | NA |
| 6 | 2001:628:1101:1012::1 | 11.4ms | 0% | AS1853 | ACOnet - ACONET, AT |
| 7 | 2001:628:1101:1012::2 | 11.4ms | 0% | AS1853 | ACOnet - ACONET, AT |
| 8 | * | - | 0% | - | |
| 9 | * | - | - | - | |
| 10 | * | - | - | - | |
| 11 | * | - | - | - | |
| 12 | * | - | - | - | |
| 13 | * | - | - | - | |
| 14 | * | - | - | - | |
| 15 | * | - | - | - | |
| 16 | * | - | - | - |
tracepath -6
1?: [LOCALHOST] 0.013ms pmtu 1500
1: _gateway 0.433ms
1: _gateway 0.495ms
2: sox-pn.sox.rs 0.358ms
3: 2001:7f8:1e:8::3d 0.488ms asymm 2
4: ae8-930.RT.IRX.VIE.AT.retn.net 12.970ms asymm 3
5: wien1.aco.net 13.229ms asymm 4
6: 2001:628:1101:1012::2 13.061ms asymm 4
7: 2001:628:1101:1012::2 11.682ms asymm 4
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) 17.6ms
4/4
Echo 1500B (DF) 17.6ms
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 | ae0-40.cr10.muc02.lwlcom.net 2a00:c380:b200:230::178 | 11.4ms | 0% | AS50629 | LWLCOM - LWLcom GmbH, DE |
| 4 | ae0-10.cr10.muc01.lwlcom.net 2a00:c380:b200:230::177 | 11.4ms | 0% | AS50629 | LWLCOM - LWLcom GmbH, DE |
| 5 | wien1.aco.net @VIX / AAIX / SAIX / TIROL-IX / ERA-IX 2001:7f8:30:0:1:1:0:1853 | 17.2ms | 0% | - | NA |
| 6 | 2001:628:1101:1012::1 | 17.6ms | 0% | AS1853 | ACOnet - ACONET, AT |
| 7 | 2001:628:1101:1012::2 | 17.6ms | 0% | AS1853 | ACOnet - ACONET, AT |
| 8 | * | - | 0% | - | |
| 9 | * | - | - | - | |
| 10 | * | - | - | - | |
| 11 | * | - | - | - | |
| 12 | * | - | - | - | |
| 13 | * | - | - | - | |
| 14 | * | - | - | - | |
| 15 | * | - | - | - | |
| 16 | * | - | - | - |
tracepath -6
1?: [LOCALHOST] 0.023ms pmtu 1500
1: xe-0-0-13-178.gw01.ber01.as59645.net 0.671ms
1: xe-0-0-13-178.gw01.ber01.as59645.net 0.633ms
2: ae0-2453.cr10.ber01.lwlcom.net 1.089ms
3: ae0-40.cr10.muc02.lwlcom.net 11.794ms
4: ae0-10.cr10.muc01.lwlcom.net 11.956ms
5: wien1.aco.net 17.422ms
6: 2001:628:1101:1012::1 17.813ms
7: 2001:628:1101:1012::2 18.006ms
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
4/4
Echo small (56B) 20.8ms
4/4
Echo 1500B (DF) 21.0ms
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 | ae0-101.cr10.dus02.lwlcom.net 2a06:d1c0::dead:beef:1301 | 0.4ms | 0%* | AS59645 | WYBT-NET - Tobias Fiebig, DE |
| 3 | ae0-20.cr10.dus01.lwlcom.net 2a00:c380:b200:230::108 | 0.7ms | 0% | AS50629 | LWLCOM - LWLcom GmbH, DE |
| 4 | ae0-90.cr11.dus01.lwlcom.net 2a00:c380:b200:230::222 | 5.5ms | 0% | AS50629 | LWLCOM - LWLcom GmbH, DE |
| 5 | ae0-30.cr10.dus06.lwlcom.net 2a00:c380:b200:230::36 | 1.0ms | 0% | AS50629 | LWLCOM - LWLcom GmbH, DE |
| 6 | ae0-40.cr10.fra06.lwlcom.net 2a00:c380:b200:230::21 | 4.1ms | 0% | AS50629 | LWLCOM - LWLcom GmbH, DE |
| 7 | ae0-20.cr10.muc01.lwlcom.net 2a00:c380:b200:230::250 | 14.5ms | 0% | AS50629 | LWLCOM - LWLcom GmbH, DE |
| 8 | wien1.aco.net @VIX / AAIX / SAIX / TIROL-IX / ERA-IX 2001:7f8:30:0:1:1:0:1853 | 20.2ms | 0% | - | NA |
| 9 | 2001:628:1101:1012::1 | 20.8ms | 0% | AS1853 | ACOnet - ACONET, AT |
| 10 | 2001:628:1101:1012::2 | 20.8ms | 0% | AS1853 | ACOnet - ACONET, AT |
| 11 | * | - | 0% | - | |
| 12 | * | - | - | - | |
| 13 | * | - | - | - | |
| 14 | * | - | - | - | |
| 15 | * | - | - | - | |
| 16 | * | - | - | - |
tracepath -6
1?: [LOCALHOST] 0.012ms pmtu 1500
1: xe-0-0-12-142.gw01.dus01.as59645.net 0.432ms
1: xe-0-0-12-142.gw01.dus01.as59645.net 0.407ms
2: ae0-101.cr10.dus02.lwlcom.net 0.594ms
3: ae0-20.cr10.dus01.lwlcom.net 0.602ms
4: ae0-20.cr10.vel01.lwlcom.net 1.153ms
5: ae0-30.cr10.dus06.lwlcom.net 1.067ms
6: ae0-40.cr10.fra06.lwlcom.net 4.157ms
7: ae0-20.cr10.muc01.lwlcom.net 14.785ms asymm 5
8: wien1.aco.net 20.787ms asymm 6
9: 2001:628:1101:1012::1 20.621ms asymm 7
10: 2001:628:1101:1012::2 20.578ms asymm 8
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) 39.2ms
4/4
Echo 1500B (DF) 39.1ms
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 | 1.6ms | 0% | AS203993 | GNA-DC1-AS - S.J.M. Steffann, NL |
| 2 | gw.friends.steffann.nl 2a00:8642:1000:f000::1 | 1.8ms | 0%* | AS203993 | GNA-DC1-AS - S.J.M. Steffann, NL |
| 3 | 2a00:1ca8:1::194 | 7.8ms | 0% | AS50673 | Serverius-as - Serverius Holding B.V., NL |
| 4 | 2a03:3f40::10:41 | 7.4ms | 0% | AS50673 | Serverius-as - Serverius Holding B.V., NL |
| 5 | 2001:b28:3ff::1b1b:0:1 | 30.5ms | 0% | AS31500 | GNM-AS - Global Network Management Inc, AG |
| 6 | be6.core4.fra1.he.net 2001:470:0:335::1 | 34.0ms | 0% | AS6939 | HURRICANE - Hurricane Electric LLC, US |
| 7 | be8.core1.prg1.he.net 2001:470:e:1e::2 | 39.2ms | 0% | AS6939 | HURRICANE - Hurricane Electric LLC, US |
| 8 | be3.core1.vie1.he.net 2001:470:e:a7::2 | 42.5ms | 40% | AS6939 | HURRICANE - Hurricane Electric LLC, US |
| 9 | 2001:470:2dd::2 | 40.8ms | 0% | AS6939 | HURRICANE - Hurricane Electric LLC, US |
| 10 | 2001:628:1101:1012::2 | 39.2ms | 0% | AS1853 | ACOnet - ACONET, AT |
| 11 | * | - | 0% | - | |
| 12 | * | - | - | - | |
| 13 | * | - | - | - | |
| 14 | * | - | - | - | |
| 15 | * | - | - | - | |
| 16 | * | - | - | - |
Rate-limited ICMPv6: hop 8 (loss between 5% and 95% across mtr cycles - the router replies but only sometimes).
tracepath -6
1?: [LOCALHOST] 0.049ms pmtu 1500
1: 2a00:8642:42::2 6.125ms
1: 2a00:8642:42::2 2.153ms
2: no reply
3: 2a00:1ca8:1::194 5.631ms
4: 2a03:3f40::10:41 4.527ms
5: 2001:b28:3ff::1b1b:0:1 28.958ms
6: be6.core4.fra1.he.net 31.104ms asymm 4
7: be8.core1.prg1.he.net 35.961ms asymm 5
8: be3.core1.vie1.he.net 45.410ms asymm 6
9: 2001:470:2dd::2 38.998ms asymm 7
10: 2001:628:1101:1012::2 39.993ms asymm 8
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) 15.5ms
3/4
Echo 1500B (DF) 15.7ms
no
Type 1 dest-unreach
-
TCP responds on
Path (traceroute + mtr + PTR)
| # | IP / PTR | RTT | mtr loss | AS | AS holder |
|---|---|---|---|---|---|
| 1 | * | - | - | - | |
| 2 | * | - | - | - | |
| 3 | 2a12:d8c0:101f:6::1 | 9.8ms | - | AS204471 | KARSOLINK - 2S Computers SRL, IT |
| 4 | * | - | - | - | |
| 5 | * | - | 50% | - | |
| 6 | 2001:470:2dd::2 | 15.4ms | 0% | AS6939 | HURRICANE - Hurricane Electric LLC, US |
| 7 | 2001:628:1101:1012::2 | 15.4ms | 0% | AS1853 | ACOnet - ACONET, AT |
| 8 | * | - | 0% | - | |
| 9 | * | - | - | - | |
| 10 | * | - | - | - | |
| 11 | * | - | - | - | |
| 12 | * | - | - | - | |
| 13 | * | - | - | - | |
| 14 | * | - | - | - | |
| 15 | * | - | - | - | |
| 16 | * | - | - | - |
Rate-limited ICMPv6: hop 5 (loss between 5% and 95% across mtr cycles - the router replies but only sometimes).
tracepath -6
1?: [LOCALHOST] 0.036ms pmtu 1500
1: no reply
2: 2a12:d8c0:109f:121::a1 0.868ms
3: no reply
4: no reply
5: 100ge0-0-0-20.core1.vie1.he.net 22.727ms
6: 2001:470:2dd::2 15.884ms
7: 2001:628:1101:1012::2 16.043ms
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 SLO host (6connect) openRFC 4890 ✓
filter likely at: (none) · min PMTU on path: 1500
4/4
Echo small (56B) 8.3ms
4/4
Echo 1500B (DF) 8.4ms
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 | * | - | - | - | |
| 3 | * | - | - | - | |
| 4 | 2a00:ee0:1:15::2 | 1.1ms | 0% | AS5603 | SIOL-NET - Telekom Slovenije, d.d., SI |
| 5 | 2a11:4142:2002 | 1.0ms | 0% | - | |
| 6 | r2-vie1-at.as5405.net 2a11:4140::1e | 7.5ms | 0% | AS5405 | INTERDOTLINK - Inter.link GmbH, DE |
| 7 | et9-4096.r2-vie2-at.as5405.net @VIX / AAIX / SAIX / TIROL-IX / ERA-IX 2001:7f8:30:0:3:1:2:5291 | 7.2ms | 0% | - | NA |
| 8 | wien1.aco.net @VIX / AAIX / SAIX / TIROL-IX / ERA-IX 2001:7f8:30:0:1:1:0:1853 | 8.7ms | 0% | - | NA |
| 9 | 2001:628:1101:1012::2 | 8.1ms | 0% | AS1853 | ACOnet - ACONET, AT |
| 10 | * | - | 0% | - | |
| 11 | * | - | 0% | - | |
| 12 | * | - | - | - | |
| 13 | * | - | - | - | |
| 14 | * | - | - | - | |
| 15 | * | - | - | - | |
| 16 | * | - | - | - |
tracepath -6
1?: [LOCALHOST] 0.019ms pmtu 9000
1: fw1-lju.6connect.com 0.514ms
1: fw1-lju.6connect.com 0.466ms
2: no reply
3: 2a00:ee1:800:9::1 73.325ms
4: 2a00:ee0:1:10::2 2.640ms asymm 3
5: 2a00:ee0:1:10::2 15.160ms pmtu 1500
5: 2a11:4142:2002:: 1.860ms asymm 6
6: r2-vie1-at.as5405.net 7.422ms asymm 8
7: et9-4096.r2-vie2-at.as5405.net 7.392ms asymm 8
8: wien1.aco.net 8.741ms asymm 4
9: 2001:628:1101:1012::2 8.232ms asymm 6
10: 2001:628:1101:1012::2 8.329ms asymm 6
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) 10.1ms
4/4
Echo 1500B (DF) 10.4ms
no
Type 1 dest-unreach
-
TCP responds on
Path (traceroute + mtr + PTR)
| # | IP / PTR | RTT | mtr loss | AS | AS holder |
|---|---|---|---|---|---|
| 1 | * | - | 0%* | - | |
| 2 | 2a01:260:1::225 | 3.5ms | 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 | 2.4ms | 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 | 2.7ms | - | AS34779 | T-2-AS - T-2, d.o.o., SI |
| 5 | * | - | 0% | - | |
| 6 | 2001:470:2dd::2 | 9.4ms | 0% | AS6939 | HURRICANE - Hurricane Electric LLC, US |
| 7 | 2001:470:2dd::2 | 8.9ms | 0% | AS6939 | HURRICANE - Hurricane Electric LLC, US |
| 8 | 2001:628:1101:1012::2 | 9.2ms | 0% | AS1853 | ACOnet - ACONET, AT |
| 9 | * | - | - | - | |
| 10 | * | - | - | - | |
| 11 | * | - | - | - | |
| 12 | * | - | - | - | |
| 13 | * | - | - | - | |
| 14 | * | - | - | - | |
| 15 | * | - | - | - | |
| 16 | * | - | - | - |
tracepath -6
1?: [LOCALHOST] 0.018ms pmtu 1500
1: no reply
2: 2a01:260:1::225 2.902ms
3: 2a01-260-1-1--9a.core6.t-2.net 2.446ms
4: 2a01-260-1-1--38.core6.t-2.net 2.713ms asymm 3
5: 100ge0-0-0-31.core1.vie1.he.net 11.161ms
6: 2001:470:2dd::2 9.397ms asymm 5
7: 2001:628:1101:1012::2 9.221ms asymm 6
8: 2001:628:1101:1012::2 10.240ms asymm 6
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