AS overview
Test target: 2a02:71e0::1 · static prefix probe · address space: unknown · prefixes announced: 1
prefix(es): 2a02:71e0::/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 | ||
2a02:71e0::1 | prb | ✓ | ✓ | ? | ? | ✓ | ✓ | ✓ | ? | ? | ✓ | ✓ | ✓ | ? | ? | ✓ | ✓ | ✓ | ? | ? | ✓ | ✓ | ✓ | ? | ? | ✓ | ✓ | ✓ | ? | ? | ✓ | ✓ | ✓ | ? | ? | ✓ |
RPKI & ASPA
1 of 1 prefix(es) covered by a valid ROA.
| Prefix | RPKI state | Reason | Covering VRP(s) |
|---|---|---|---|
2a02:71e0::/48 | ✓ valid | matched VRP (correct origin, length within maxLength) | AS201905 /48 maxLen 48 (ripe) |
Random-IP probe (yarrp) into the AS' prefixes
We probed 35 arbitrary IPv6 address(es) inside AS201905's announced prefix(es). No router inside the prefix responded. The deepest visible hop was 2a01:260:1021::2 at hop 22 - that router answers ICMPv6 Echo. This is not in AS201905's announced prefix; operationally it's the AS-edge / peering interface (often on a SIX 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 2026-09-23T10:34:54Z
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 | 0.2ms | 0%* | AS60733 | PERKE-NET - ZORAN PEROVIC trading as Agencija Perke.NET, RS |
| 2 | sox-pn.sox.rs 2001:7f8:1e:8::3a | 0.5ms | 0% | AS13004 | SOX - Serbian Open Exchange DOO, RS |
| 3 | 2001:7f8:1e:8::3d | 0.5ms | 0% | AS13004 | SOX - Serbian Open Exchange DOO, RS |
| 4 | 2a02:2d8:0:a00e:232a | 22.3ms | 0% | - | |
| 5 | RT.DPX.BUD.HU.retn.net 2a02:2d8::57f5:e0ad | 15.8ms | 0% | AS9002 | RETN-AS - RETN Limited, GB |
| 6 | 2001:7f8:35::3:4779:1 | 20.0ms | 0% | - | NA |
| 7 | 2a01-260-1-1--24.core6.t-2.net 2a01:260:1:1::24 | 20.0ms | 0%* | AS34779 | T-2-AS - T-2, d.o.o., SI |
| 8 | 2a01-260-1-1--6.core6.t-2.net 2a01:260:1:1::6 | 20.1ms | 0%* | AS34779 | T-2-AS - T-2, d.o.o., SI |
| 9 | 2a01-260-1-1--9f.core6.t-2.net 2a01:260:1:1::9f | 20.6ms | 0%* | AS34779 | T-2-AS - T-2, d.o.o., SI |
| 10 | 2a02:71e0::1 | 20.9ms | 0% | AS201905 | DSPOT - Dspot d.o.o., SI |
tracepath -6
1?: [LOCALHOST] 0.012ms pmtu 1500
1: _gateway 0.866ms
1: _gateway 0.625ms
2: sox-pn.sox.rs 0.986ms
3: 2001:7f8:1e:8::3d 0.806ms asymm 2
4: ae8-930.RT.IRX.VIE.AT.retn.net 13.158ms asymm 3
5: RT.DPX.BUD.HU.retn.net 16.052ms asymm 4
6: 2001:7f8:35::3:4779:1 20.473ms asymm 9
7: 2a01-260-1-1--24.core6.t-2.net 19.745ms asymm 8
8: 2a01-260-1-1--16.core6.t-2.net 20.243ms
9: 2a01-260-1-1--9f.core6.t-2.net 20.825ms
10: 2a02:71e0::1 21.083ms !A
Resume: pmtu 1500 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 | * | - | 0%* | - | |
| 2 | ae0-2453.cr10.ber01.lwlcom.net 2a06:d1c0::dead:beef:1c02 | 0.5ms | 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 | 5.2ms | 0% | AS50629 | LWLCOM - LWLcom GmbH, DE |
| 6 | ae4-2087.dus10.core-backbone.com 2a01:4a0:0:2087::33 | 11.2ms | 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 | 12.1ms | 0% | AS201011 | CORE-BACKBONE - Core-Backbone GmbH, DE |
| 10 | ae2-2032.muc20.core-backbone.com 2a01:4a0:0:2032::7 | 14.7ms | 0% | AS201011 | CORE-BACKBONE - Core-Backbone GmbH, DE |
| 11 | ae1-2028.vie10.core-backbone.com 2a01:4a0:0:2028::10 | 20.2ms | 0% | AS201011 | CORE-BACKBONE - Core-Backbone GmbH, DE |
| 12 | 2a01:4a0:1338:115::2 | 32.0ms | 0% | AS201011 | CORE-BACKBONE - Core-Backbone GmbH, DE |
| 13 | 2a01-260-1-1--6.core6.t-2.net 2a01:260:1:1::6 | 32.3ms | 0%* | AS34779 | T-2-AS - T-2, d.o.o., SI |
| 14 | 2a01-260-1-1--9f.core6.t-2.net 2a01:260:1:1::9f | 32.4ms | 0%* | AS34779 | T-2-AS - T-2, d.o.o., SI |
| 15 | 2a02:71e0::1 | 32.4ms | 0% | AS201905 | DSPOT - Dspot d.o.o., SI |
tracepath -6
1?: [LOCALHOST] 0.027ms pmtu 1500
1: xe-0-0-13-178.gw01.ber01.as59645.net 0.688ms
1: xe-0-0-13-178.gw01.ber01.as59645.net 0.703ms
2: ae0-2453.cr10.ber01.lwlcom.net 0.770ms
3: ae3-90.cr10.ham01.lwlcom.net 5.449ms
4: ae0-50.cr11.ham01.lwlcom.net 5.320ms
5: 2a00:c380:f000::4b 5.636ms asymm 4
6: ae4-2087.dus10.core-backbone.com 11.602ms asymm 5
7: ae21-2071.fra10.core-backbone.com 10.918ms asymm 5
8: ae2-2021.fra20.core-backbone.com 11.231ms asymm 4
9: ae6-2003.nbg20.core-backbone.com 12.331ms asymm 6
10: ae2-2032.muc20.core-backbone.com 15.399ms asymm 7
11: ae1-2028.vie10.core-backbone.com 20.830ms asymm 8
12: 2a01:4a0:1338:115::2 32.859ms
13: 2a01-260-1-1--6.core6.t-2.net 32.783ms asymm 12
14: 2a01-260-1-1--9f.core6.t-2.net 33.128ms asymm 13
15: 2a02:71e0::1 33.135ms !A
Resume: pmtu 1500 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 | * | - | 0%* | - | |
| 2 | ipv6.decix-dusseldorf.core1.dus1.he.net 2001:7f8:9e::1b1b:0:1 | 7.7ms | 0% | - | NA |
| 3 | * | - | - | - | |
| 4 | be6.core2.ams2.he.net 2001:470:0:61c::2 | 9.5ms | 0% | AS6939 | HURRICANE - Hurricane Electric LLC, US |
| 5 | t-2.interxionfra11.nlsix.net 2001:7f8:13::a503:4779:1 | 32.4ms | 0% | - | NA |
| 6 | 2a01-260-1-1--16.core6.t-2.net 2a01:260:1:1::16 | 32.1ms | 0%* | AS34779 | T-2-AS - T-2, d.o.o., SI |
| 7 | 2a01-260-1-1--9f.core6.t-2.net 2a01:260:1:1::9f | 43.6ms | 0%* | AS34779 | T-2-AS - T-2, d.o.o., SI |
| 8 | 2a02:71e0::1 | 33.7ms | 0% | AS201905 | DSPOT - Dspot d.o.o., SI |
tracepath -6
1?: [LOCALHOST] 0.013ms pmtu 1500
1: xe-0-0-12-142.gw01.dus01.as59645.net 0.457ms
1: xe-0-0-12-142.gw01.dus01.as59645.net 0.328ms
2: ipv6.decix-dusseldorf.core1.dus1.he.net 6.599ms asymm 3
3: no reply
4: be6.core2.ams2.he.net 9.308ms asymm 6
5: t-2.interxionfra11.nlsix.net 28.242ms asymm 11
6: 2a01-260-1-1--16.core6.t-2.net 33.571ms asymm 11
7: 2a01-260-1-1--9f.core6.t-2.net 30.369ms asymm 12
8: 2a02:71e0::1 34.370ms !A
Resume: pmtu 1500 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 | 1.6ms | 0% | AS203993 | GNA-DC1-AS - S.J.M. Steffann, NL |
| 2 | * | - | 0%* | - | |
| 3 | 2a00:1ca8:1::194 | 3.8ms | 0% | AS50673 | Serverius-as - Serverius Holding B.V., NL |
| 4 | 2a03:3f40::10:33 | 6.3ms | 0% | AS50673 | Serverius-as - Serverius Holding B.V., NL |
| 5 | t-2.interxionfra11.nlsix.net 2001:7f8:13::a503:4779:1 | 38.3ms | 0% | - | NA |
| 6 | 2a01-260-1-1--16.core6.t-2.net 2a01:260:1:1::16 | 33.9ms | 0%* | AS34779 | T-2-AS - T-2, d.o.o., SI |
| 7 | 2a01-260-1-1--9f.core6.t-2.net 2a01:260:1:1::9f | 36.8ms | 0%* | AS34779 | T-2-AS - T-2, d.o.o., SI |
| 8 | 2a02:71e0::1 | 40.3ms | 0% | AS201905 | DSPOT - Dspot d.o.o., SI |
tracepath -6
1?: [LOCALHOST] 0.141ms pmtu 1500
1: ??? 3.253ms
1: ??? 821.400ms
2: no reply
3: 2a00:1ca8:1::194 3.738ms
4: 2a03:3f40::10:33 9.380ms
5: t-2.interxionfra11.nlsix.net 41.344ms asymm 6
6: 2a01-260-1-1--16.core6.t-2.net 38.881ms asymm 7
7: 2a01-260-1-1--9f.core6.t-2.net 39.302ms asymm 8
8: 2a02:71e0::1 46.685ms !A
Resume: pmtu 1500 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 | * | - | 90% | - | |
| 4 | * | - | - | - | |
| 5 | 100ge0-0-0-20.core1.vie1.he.net 2001:470:0:414::1 | 21.1ms | 10% | AS6939 | HURRICANE - Hurricane Electric LLC, US |
| 6 | 2001:7f8:30:0:2:1:3:4779 | 19.9ms | 0% | - | NA |
| 7 | 2a01-260-1-1--6.core6.t-2.net 2a01:260:1:1::6 | 45.4ms | 0%* | AS34779 | T-2-AS - T-2, d.o.o., SI |
| 8 | 2a01-260-1-1--9f.core6.t-2.net 2a01:260:1:1::9f | 44.2ms | 0%* | AS34779 | T-2-AS - T-2, d.o.o., SI |
| 9 | 2a02:71e0::1 | 41.0ms | 0% | AS201905 | DSPOT - Dspot d.o.o., SI |
Rate-limited ICMPv6: hop 3, hop 5 (loss between 5% and 95% across mtr cycles - the router replies but only sometimes).
tracepath -6
1?: [LOCALHOST] 0.037ms pmtu 1500
1: no reply
2: no reply
3: 2a12:d8c0:101f:6::1 9.955ms
4: no reply
5: 100ge0-0-0-20.core1.vie1.he.net 23.901ms
6: 2001:7f8:30:0:2:1:3:4779 20.163ms
7: 2a01-260-1-1--6.core6.t-2.net 45.910ms asymm 11
8: 2a01-260-1-1--9f.core6.t-2.net 43.685ms asymm 12
9: 2a02:71e0::1 41.266ms !A
Resume: pmtu 1500 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 | * | - | 10% | - | |
| 4 | e0-1.core1.lju1.he.net 2001:470:1:5be::1 | 1.8ms | 0% | AS6939 | HURRICANE - Hurricane Electric LLC, US |
| 5 | 100ge0-0-0-5.core1.vie1.he.net 2001:470:0:578::1 | 8.6ms | 10% | AS6939 | HURRICANE - Hurricane Electric LLC, US |
| 6 | 2001:7f8:30:0:2:1:3:4779 | 6.2ms | 0% | - | NA |
| 7 | 2a01-260-1-1--6.core6.t-2.net 2a01:260:1:1::6 | 7.2ms | 0%* | AS34779 | T-2-AS - T-2, d.o.o., SI |
| 8 | 2a01-260-1-1--9f.core6.t-2.net 2a01:260:1:1::9f | 7.5ms | 0%* | AS34779 | T-2-AS - T-2, d.o.o., SI |
| 9 | 2a02:71e0::1 | 7.7ms | 0% | AS201905 | DSPOT - Dspot d.o.o., SI |
Rate-limited ICMPv6: hop 3, hop 5 (loss between 5% and 95% across mtr cycles - the router replies but only sometimes).
tracepath -6
1?: [LOCALHOST] 0.053ms pmtu 9000
1: fw1-lju.6connect.com 0.613ms
1: fw1-lju.6connect.com 0.567ms
2: no reply
3: 2a03:a100:0:201:1::1 1.246ms
4: 2a03:a100:0:201:1::1 1.260ms pmtu 1500
4: e0-1.core1.lju1.he.net 2.209ms
5: 100ge0-0-0-5.core1.vie1.he.net 8.508ms
6: 2001:7f8:30:0:2:1:3:4779 6.464ms asymm 5
7: 2a01-260-1-1--6.core6.t-2.net 7.423ms asymm 5
8: 2a01-260-1-1--9f.core6.t-2.net 7.457ms asymm 6
9: 2a02:71e0::1 7.881ms !A
Resume: pmtu 1500 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 | 13.5ms | 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 | 12.2ms | 0%* | AS34779 | T-2-AS - T-2, d.o.o., SI |
| 4 | * | - | 0%* | - | |
| 5 | * | - | 0%* | - | |
| 6 | 2a02:71e0::1 | 12.7ms | 0% | AS201905 | DSPOT - Dspot d.o.o., SI |
tracepath -6
1?: [LOCALHOST] 0.019ms pmtu 1500
1: no reply
2: 2a01:260:1::225 3.739ms
3: 2a01-260-1-1--9a.core6.t-2.net 2.400ms
4: 2a01-260-1-1--63.core6.t-2.net 3.237ms
5: 2a01-260-1-1--9f.core6.t-2.net 3.505ms
6: 2a02:71e0::1 4.490ms !A
Resume: pmtu 1500