AS62255 - BiMajLinkPI/PARFC 4890 ✓RPKI -ASPA -

AS overview

Test target: 2a10:180:0:2::14 · via IPv6 Hitlist (responsive) · address space: mixed · prefixes announced: 1

prefix(es): 2a10:180::/29

Random-IP probe (yarrp) into the AS' prefixes

We probed 35 arbitrary IPv6 address(es) inside AS62255's announced prefix(es). No router inside the prefix responded. The deepest visible hop was 2a03:5f80:4:2::236:128 at hop 8 - that router does not answer ICMPv6 Echo. This is not in AS62255'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 2026-09-23T10:36:23Z

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)

tracepath -6

 1?: [LOCALHOST]                        0.009ms pmtu 1500
 1:  _gateway                                              0.603ms 
 1:  _gateway                                              0.627ms 
 2:  2001:7f8:1e::108                                      0.708ms 
 3:  2a10:180:0:2::14                                     31.847ms reached
     Resume: pmtu 1500 hops 3 back 3 

From DE host (Berlin)   openRFC 4890 ✓

filter likely at: (none) · min PMTU on path: 1500

Path (traceroute + mtr + PTR)

tracepath -6

 1?: [LOCALHOST]                        0.023ms pmtu 1500
 1:  xe-0-0-13-178.gw01.ber01.as59645.net                  0.830ms 
 1:  xe-0-0-13-178.gw01.ber01.as59645.net                  0.925ms 
 2:  ae0-2453.cr10.ber01.lwlcom.net                        3.635ms 
 3:  ae0-150.cr10.fra01.lwlcom.net                        10.750ms asymm  7 
 4:  ae0-100.cr10.fra02.lwlcom.net                        10.951ms asymm  8 
 5:  2a10:180:0:2::14                                     11.085ms reached
     Resume: pmtu 1500 hops 5 back 9 

From DE host (Düsseldorf)   openRFC 4890 ✓

filter likely at: (none) · min PMTU on path: 1500

Path (traceroute + mtr + PTR)

tracepath -6

 1?: [LOCALHOST]                        0.023ms pmtu 1500
 1:  xe-0-0-12-142.gw01.dus01.as59645.net                  0.535ms 
 1:  xe-0-0-12-142.gw01.dus01.as59645.net                  0.435ms 
 2:  ae0-101.cr10.dus02.lwlcom.net                         0.721ms 
 3:  ae0-20.cr10.dus01.lwlcom.net                          0.955ms 
 4:  ae0-20.cr10.vel01.lwlcom.net                          1.204ms 
 5:  ae0-10.cr10.dus06.lwlcom.net                         19.332ms 
 6:  ae0-40.cr10.fra06.lwlcom.net                          4.727ms 
 7:  ae0-10.cr10.fra02.lwlcom.net                          5.010ms 
 8:  2a10:180:0:2::14                                      5.163ms reached
     Resume: pmtu 1500 hops 8 back 8 

From NL host (go6lab)   openRFC 4890 ✓

filter likely at: (none) · min PMTU on path: 1500

Path (traceroute + mtr + PTR)

tracepath -6

 1?: [LOCALHOST]                        0.036ms pmtu 1500
 1:  2a00:8642:42::2                                       2.527ms 
 1:  ???                                                   2.610ms 
 2:  no reply
 3:  2a00:1ca8:1::194                                      4.459ms 
 4:  2a03:3f40::10:41                                      3.946ms 
 5:  2a10:180:0:2::14                                     11.477ms reached
     Resume: pmtu 1500 hops 5 back 5 

From ITA host (Karsolink)   openRFC 4890 ✓

filter likely at: (none) · min PMTU on path: 1500

Path (traceroute + mtr + PTR)

tracepath -6

 1?: [LOCALHOST]                        0.053ms pmtu 1500
 1:  no reply
 2:  2a12:d8c0:109f:121::a1                                0.734ms 
 3:  2a12:d8c0:101f:6::1                                  10.363ms 
 4:  2a03:b020:1:51::a                                    10.470ms 
 5:  2a03:b020::224                                       19.068ms 
 6:  2a10:180:0:2::14                                     25.891ms reached
     Resume: pmtu 1500 hops 6 back 6 

From SLO host (6connect)   openRFC 4890 ✓

filter likely at: (none) · min PMTU on path: 1500

Path (traceroute + mtr + PTR)

tracepath -6

 1?: [LOCALHOST]                        0.017ms pmtu 9000
 1:  fw1-lju.6connect.com                                  0.842ms 
 1:  fw1-lju.6connect.com                                  0.671ms 
 2:  no reply
 3:  2a00:ee1:800:9::1                                     2.695ms 
 4:  2a00:ee0:1:10::2                                      1.466ms asymm  3 
 5:  2a00:ee0:1:10::2                                      3.614ms pmtu 1500
 5:  2a10:180:0:2::14                                     19.906ms reached
     Resume: pmtu 1500 hops 5 back 9 

From SLO host (T-2)   openRFC 4890 ✓

filter likely at: (none) · min PMTU on path: 1500

Path (traceroute + mtr + PTR)

tracepath -6

 1?: [LOCALHOST]                        0.027ms pmtu 1500
 1:  no reply
 2:  2a01:260:1::225                                       7.075ms 
 3:  2a01-260-1-1--9c.core6.t-2.net                        2.726ms 
 4:  hurricane-electric.nikhef.nlsix.net                  35.558ms 
 5:  no reply
 6:  be47.core3.ams1.he.net                               37.220ms 
 7:  be47.core3.ams1.he.net                               31.973ms asymm  6 
 8:  2a10:180:0:2::14                                     41.942ms reached
     Resume: pmtu 1500 hops 8 back 7