AS overview
Test target: 2a04:40::1 · static prefix probe · address space: PA · prefixes announced: 1
prefix(es): 2a04:40::/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 | ||
2a04:40::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 - Open peering, peering member, since 2016-09-26. IPv6 LAN: 2001:7f8:30:0:2:1:3:9878. Locations: -.
RPKI & ASPA
1 of 1 prefix(es) covered by a valid ROA.
| Prefix | RPKI state | Reason | Covering VRP(s) |
|---|---|---|---|
2a04:40::/29 | ✓ valid | matched VRP (correct origin, length within maxLength) | AS39878 /29 maxLen 29 (ripe) |
ASPA: this AS has published an ASPA record listing 3 upstream provider(s) that are authorized to propagate routes from it: AS1299, AS3257, AS33891. Routes from this AS that arrive via any other upstream are considered ASPA-invalid by validators that enforce ASPA.
Random-IP probe (yarrp) into the AS' prefixes
We probed 35 arbitrary IPv6 address(es) inside AS39878's announced prefix(es). No router inside the prefix responded. The deepest visible hop was 2a01:4a0:1338:b::2 at hop 23 - that router answers ICMPv6 Echo. This is not in AS39878'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 2026-09-24T13:32:13Z
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 | 0.3ms | 0%* | AS60733 | PERKE-NET - ZORAN PEROVIC trading as Agencija Perke.NET, RS |
| 2 | 2001:7f8:1e::4 | 0.5ms | 0% | AS13004 | SOX - Serbian Open Exchange DOO, RS |
| 3 | 2001:7f8:30:0:2:1:3:9878 @VIX / AAIX / SAIX / TIROL-IX / ERA-IX | 17.7ms | 0% | - | NA |
| 4 | core01.sbg.pr-link.at 2a04:40::1 | 16.9ms | 0% | AS39878 | RAUTER-AS - Peter Rauter GmbH, AT |
tracepath -6
1?: [LOCALHOST] 0.024ms pmtu 1500
1: _gateway 0.405ms
1: _gateway 0.660ms
2: 2001:7f8:1e::4 0.748ms
3: 2001:7f8:30:0:2:1:3:9878 17.827ms
4: core01.sbg.pr-link.at 18.523ms reached
Resume: pmtu 1500 hops 4 back 4 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 | 0.8ms | 0%* | AS59645 | WYBT-NET - Tobias Fiebig, DE |
| 3 | ae3-90.cr10.ham01.lwlcom.net 2a00:c380:b200:230::192 | 4.9ms | 0% | AS50629 | LWLCOM - LWLcom GmbH, DE |
| 4 | ae0-50.cr11.ham01.lwlcom.net 2a00:c380:b200:230::45 | 4.8ms | 0% | AS50629 | LWLCOM - LWLcom GmbH, DE |
| 5 | 2a00:c380:f000::4b | 5.3ms | 0% | AS50629 | LWLCOM - LWLcom GmbH, DE |
| 6 | ae4-2087.dus10.core-backbone.com 2a01:4a0:0:2087::33 | 11.3ms | 0% | AS201011 | CORE-BACKBONE - Core-Backbone GmbH, DE |
| 7 | ae21-2071.fra10.core-backbone.com 2a01:4a0:0:2071::4 | 10.7ms | 0% | AS201011 | CORE-BACKBONE - Core-Backbone GmbH, DE |
| 8 | ae2-2021.fra20.core-backbone.com 2a01:4a0:0:2021::4 | 10.6ms | 0% | AS201011 | CORE-BACKBONE - Core-Backbone GmbH, DE |
| 9 | ae6-2003.nbg20.core-backbone.com 2a01:4a0:0:2003::2 | 12.0ms | 0% | AS201011 | CORE-BACKBONE - Core-Backbone GmbH, DE |
| 10 | ae2-2032.muc20.core-backbone.com 2a01:4a0:0:2032::7 | 14.6ms | 0% | AS201011 | CORE-BACKBONE - Core-Backbone GmbH, DE |
| 11 | ae4-2057.slz10.core-backbone.com 2a01:4a0:0:2057::8 | 16.2ms | 0% | AS201011 | CORE-BACKBONE - Core-Backbone GmbH, DE |
| 12 | core01.sbg.pr-link.at 2a04:40::1 | 21.9ms | 0% | AS39878 | RAUTER-AS - Peter Rauter GmbH, AT |
tracepath -6
1?: [LOCALHOST] 0.022ms pmtu 1500
1: xe-0-0-13-178.gw01.ber01.as59645.net 0.455ms
1: xe-0-0-13-178.gw01.ber01.as59645.net 0.453ms
2: ae0-2453.cr10.ber01.lwlcom.net 0.940ms
3: ae3-90.cr10.ham01.lwlcom.net 5.183ms
4: ae0-50.cr11.ham01.lwlcom.net 7.078ms
5: 2a00:c380:f000::4b 5.549ms asymm 4
6: ae4-2087.dus10.core-backbone.com 11.540ms asymm 5
7: ae21-2071.fra10.core-backbone.com 11.025ms asymm 5
8: ae2-2021.fra20.core-backbone.com 10.973ms asymm 4
9: ae6-2003.nbg20.core-backbone.com 12.525ms asymm 6
10: ae2-2032.muc20.core-backbone.com 14.817ms asymm 7
11: ae4-2057.slz10.core-backbone.com 16.651ms asymm 8
12: core01.sbg.pr-link.at 22.313ms reached
Resume: pmtu 1500 hops 12 back 6 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 | 1.1ms | 0% | AS24961 | MYLOC-AS - WIIT AG, DE |
| 3 | * | - | - | - | |
| 4 | lag30.core3-dus1.bb.wiit.network 2001:4ba0:ffe9:109::2 | 0.2ms | 0% | AS24961 | MYLOC-AS - WIIT AG, DE |
| 5 | lag2.core1-dus-ix.bb.wiit.network 2001:4ba0:ffe9:4f::1 | 0.4ms | 0% | AS24961 | MYLOC-AS - WIIT AG, DE |
| 6 | core01.sbg.pr-link.at 2a04:40::1 | 26.1ms | 0% | AS39878 | RAUTER-AS - Peter Rauter GmbH, AT |
tracepath -6
1?: [LOCALHOST] 0.014ms pmtu 1500
1: xe-0-0-12-142.gw01.dus01.as59645.net 0.456ms
1: xe-0-0-12-142.gw01.dus01.as59645.net 0.315ms
2: eth1-0-12-h5594.edge5-dus1.bb.wiit.network 7.489ms
3: no reply
4: lag11.core3-dus1.bb.wiit.network 0.539ms
5: lag8.core1-dus-ix.bb.wiit.network 0.738ms
6: core01.sbg.pr-link.at 26.563ms reached
Resume: pmtu 1500 hops 6 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 | 1.4ms | 0% | AS203993 | GNA-DC1-AS - S.J.M. Steffann, NL |
| 2 | * | - | 0%* | - | |
| 3 | * | - | - | - | |
| 4 | core01.sbg.pr-link.at 2a04:40::1 | 24.5ms | 0% | AS39878 | RAUTER-AS - Peter Rauter GmbH, AT |
tracepath -6
1?: [LOCALHOST] 0.030ms pmtu 1500
1: 2a00:8642:42::2 2.134ms
1: 2a00:8642:42::2 1.562ms
2: gw.friends.steffann.nl 2.473ms
3: ccr2-ccr1.dc1.nogalliance.org 5.725ms asymm 2
4: core01.sbg.pr-link.at 27.834ms reached
Resume: pmtu 1500 hops 4 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 | karsolink-01.net.karsolink.com 2a12:d8c0:105a:9001::1 | 0.3ms | 0%* | AS204471 | KARSOLINK - 2S Computers SRL, IT |
| 2 | 2a12:d8c0:109f:121::a1 | 0.3ms | 0%* | AS204471 | KARSOLINK - 2S Computers SRL, IT |
| 3 | 2a12:d8c0:101f:6::1 | 9.8ms | 90% | AS204471 | KARSOLINK - 2S Computers SRL, IT |
| 4 | 2a02:2d8:4:1815:232a | 3.5ms | 0% | - | |
| 5 | RT.IRX.VIE.AT.retn.net 2a02:2d8::57f5:e0af | 15.6ms | 0% | AS9002 | RETN-AS - RETN Limited, GB |
| 6 | 2001:7f8:30:0:2:1:3:9878 @VIX / AAIX / SAIX / TIROL-IX / ERA-IX | 20.4ms | 0% | - | NA |
| 7 | core01.sbg.pr-link.at 2a04:40::1 | 26.4ms | - | AS39878 | RAUTER-AS - Peter Rauter GmbH, AT |
Rate-limited ICMPv6: hop 3 (loss between 5% and 95% across mtr cycles - the router replies but only sometimes).
tracepath -6
1?: [LOCALHOST] 0.029ms pmtu 1500
1: karsolink-01.net.karsolink.com 0.685ms
1: karsolink-01.net.karsolink.com 0.671ms
2: 2a12:d8c0:109f:121::a1 0.664ms
3: 2a12:d8c0:101f:6::1 10.414ms
4: 2a03:b020:1:51::a 10.856ms
5: RT.IRX.VIE.AT.retn.net 29.517ms
6: 2001:7f8:30:0:2:1:3:9878 17.418ms
7: core01.sbg.pr-link.at 19.109ms reached
Resume: pmtu 1500 hops 7 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 | 0.4ms | 0%* | AS8038 | 6CONNECT - 6connect, Inc., US |
| 2 | * | - | - | - | |
| 3 | * | - | 80% | - | |
| 4 | 2a00:ee0:1:10::2 | 1.5ms | 0% | AS5603 | SIOL-NET - Telekom Slovenije, d.d., SI |
| 5 | core01.sbg.pr-link.at 2a04:40::1 | 21.7ms | 0% | AS39878 | RAUTER-AS - Peter Rauter GmbH, AT |
Rate-limited ICMPv6: hop 3 (loss between 5% and 95% across mtr cycles - the router replies but only sometimes).
tracepath -6
1?: [LOCALHOST] 0.019ms pmtu 9000
1: fw1-lju.6connect.com 0.654ms
1: fw1-lju.6connect.com 0.652ms
2: no reply
3: no reply
4: 2a00:ee0:1:15::2 1.716ms asymm 3
5: 2a00:ee0:1:10::2 1.538ms pmtu 1500
5: core01.sbg.pr-link.at 21.849ms reached
Resume: pmtu 1500 hops 5 back 6 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 | 1.7ms | 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 | 2a01-260-1-1--25.core6.t-2.net 2a01:260:1:1::25 | 4.7ms | 0%* | AS34779 | T-2-AS - T-2, d.o.o., SI |
| 5 | 2001:7f8:30:0:2:1:3:9878 @VIX / AAIX / SAIX / TIROL-IX / ERA-IX | 13.0ms | 0% | - | NA |
| 6 | core01.sbg.pr-link.at 2a04:40::1 | 13.8ms | 0% | AS39878 | RAUTER-AS - Peter Rauter GmbH, AT |
tracepath -6
1?: [LOCALHOST] 0.028ms pmtu 1500
1: no reply
2: 2a01:260:1::225 3.548ms
3: 2a01-260-1-1--9c.core6.t-2.net 3.477ms
4: 2a01-260-1-1--c.core6.t-2.net 4.486ms
5: 2001:7f8:30:0:2:1:3:9878 12.981ms
6: core01.sbg.pr-link.at 15.655ms reached
Resume: pmtu 1500 hops 6 back 6