AS212659 - artemismediasrl Cinquenet S.R.LPARFC 4890 ✓RPKI -ASPA -

AS overview

Test target: 2a07:2f40::1 · static prefix probe · address space: PA · prefixes announced: 1

prefix(es): 2a07:2f40::/29

MIX-IT / NAMEX / MINAP / TOP-IX / VSIX / EQUINIX-MILAN / BGPX-ROME / NAMEX-BARI / PCIX / DECIX-PALERMO peering

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

At least one router inside AS212659's announced prefix replied during the random-target probe. Hop(s): 2a07:2f40::1. 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 2026-09-23T12:05:35Z

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)

Rate-limited ICMPv6: hop 6 (loss between 5% and 95% across mtr cycles - the router replies but only sometimes).

tracepath -6

 1?: [LOCALHOST]                        0.021ms pmtu 1500
 1:  _gateway                                              0.409ms 
 1:  _gateway                                              0.610ms 
 2:  sox-pn.sox.rs                                         0.422ms 
 3:  2001:7f8:1e:8::3d                                     0.476ms asymm  2 
 4:  ae8-930.RT.IRX.VIE.AT.retn.net                       12.973ms asymm  3 
 5:  RT.MIX.MIL.IT.retn.net                               24.182ms asymm  4 
 6:  fastweb-v6.mix-it.net                                29.609ms asymm  5 
 7:  2001:b00:1:1:3::135                                  28.869ms asymm  6 
 8:  2001:b00:7fff:fc19::ebc9:2                           29.237ms asymm  6 
 9:  2a07:2f40::1                                         28.995ms reached
     Resume: pmtu 1500 hops 9 back 5 

From DE host (Berlin)   openRFC 4890 ✓

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

Path (traceroute + mtr + PTR)

Rate-limited ICMPv6: hop 15 (loss between 5% and 95% across mtr cycles - the router replies but only sometimes).

tracepath -6

 1?: [LOCALHOST]                        0.022ms pmtu 1500
 1:  xe-0-0-13-178.gw01.ber01.as59645.net                  0.456ms 
 1:  xe-0-0-13-178.gw01.ber01.as59645.net                  0.390ms 
 2:  ae0-2453.cr10.ber01.lwlcom.net                        1.123ms 
 3:  ae0-10.cr10.ber03.lwlcom.net                          1.377ms 
 4:  ae0-15.cr11.dtm01.lwlcom.net                         12.476ms asymm  5 
 5:  ae0-10.cr10.dtm02.lwlcom.net                         34.766ms asymm  6 
 6:  ae0-20.cr10.dus04.lwlcom.net                          8.921ms asymm  5 
 7:  ae0-10.cr10.dus01.lwlcom.net                          9.833ms asymm  4 
 8:  ae0-90.cr11.dus01.lwlcom.net                          8.783ms asymm  5 
 9:  as3303.dusseldorf.megaport.com                       17.531ms asymm 13 
10:  i00ffm-005-loo179.bb.ip-plus.net                     17.811ms asymm 12 
11:  i62bsw-015-loo179.ip6.ip-plus.net                    17.782ms asymm 14 
12:  i73olt-005-loo179.bb.ip-plus.net                     17.969ms 
13:  i71lzf-015-loo179.bb.ip-plus.net                     18.096ms asymm 12 
14:  i63bel-005-loo179.bb.ip-plus.net                     20.144ms asymm 13 
15:  no reply
16:  2001:b00:1:1:1::1a7                                  22.904ms asymm  8 
17:  2001:b00:7fff:fc19::ebc9:2                           21.152ms asymm 12 
18:  2a07:2f40::1                                         20.778ms reached
     Resume: pmtu 1500 hops 18 back 11 

From DE host (Düsseldorf)   openRFC 4890 ✓

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

Path (traceroute + mtr + PTR)

Rate-limited ICMPv6: hop 6 (loss between 5% and 95% across mtr cycles - the router replies but only sometimes).

tracepath -6

 1?: [LOCALHOST]                        0.013ms pmtu 1500
 1:  xe-0-0-12-142.gw01.dus01.as59645.net                  0.259ms 
 1:  xe-0-0-12-142.gw01.dus01.as59645.net                  0.241ms 
 2:  eth1-0-12-h5594.edge5-dus1.bb.wiit.network            2.682ms 
 3:  no reply
 4:  lag11.core3-dus1.bb.wiit.network                      0.513ms 
 5:  lag2.core1-dus-ix.bb.wiit.network                     0.604ms 
 6:  mi-caracciolo-ir001.fastweb.it                       70.207ms 
 7:  2001:b00:1:1:1::1ab                                  17.508ms 
 8:  2001:b00:7fff:fc19::ebc9:2                           15.678ms asymm 11 
 9:  2a07:2f40::1                                         15.312ms reached
     Resume: pmtu 1500 hops 9 back 10 

From NL host (go6lab)   openRFC 4890 ✓

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

Path (traceroute + mtr + PTR)

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]                        0.044ms pmtu 1500
 1:  2a00:8642:42::2                                       2.385ms 
 1:  2a00:8642:42::2                                       3.006ms 
 2:  no reply
 3:  2a00:1ca8:1::194                                     10.176ms 
 4:  2a03:3f40::10:33                                     11.844ms 
 5:  2001:7f8:1::a501:2874:1                              26.437ms 
 6:  2001:b00:1:1:3::139                                  26.511ms 
 7:  2001:b00:7fff:fc19::ebc9:2                           30.743ms asymm  9 
 8:  2a07:2f40::1                                         23.111ms reached
     Resume: pmtu 1500 hops 8 back 8 

From ITA host (Karsolink)   openRFC 4890 ✓

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

Path (traceroute + mtr + PTR)

Rate-limited ICMPv6: hop 3, hop 4 (loss between 5% and 95% across mtr cycles - the router replies but only sometimes).

tracepath -6

 1?: [LOCALHOST]                        0.039ms pmtu 1500
 1:  no reply
 2:  no reply
 3:  2a12:d8c0:101f:6::1                                  10.256ms 
 4:  fastweb-v6.mix-it.net                                12.048ms 
 5:  2001:b00:1:1:3::135                                   9.927ms 
 6:  2001:b00:7fff:fc19::ebc9:2                            8.808ms asymm  5 
 7:  2a07:2f40::1                                          9.954ms reached
     Resume: pmtu 1500 hops 7 back 4 

From SLO host (6connect)   openRFC 4890 ✓

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

Path (traceroute + mtr + PTR)

tracepath -6

 1?: [LOCALHOST]                        0.018ms pmtu 9000
 1:  fw1-lju.6connect.com                                  0.527ms 
 1:  fw1-lju.6connect.com                                  0.649ms 
 2:  no reply
 3:  2a03:a100:0:201:1::1                                  1.060ms 
 4:  2a03:a100:0:201:1::1                                  1.079ms pmtu 1500
 4:  2001:7f8:46:0:1::3303                                 7.812ms asymm  5 
 5:  i00mil-005-loo179.bb.ip-plus.net                      8.399ms asymm  6 
 6:  2001:4d98:a000::15d                                   9.244ms asymm  7 
 7:  2001:b00:1:1:1::1ab                                  10.299ms asymm  9 
 8:  2001:b00:7fff:fc19::ebc9:2                            8.796ms asymm  7 
 9:  2a07:2f40::1                                          8.866ms reached
     Resume: pmtu 1500 hops 9 back 6 

From SLO host (T-2)   openRFC 4890 ✓

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

Path (traceroute + mtr + PTR)

Rate-limited ICMPv6: hop 6 (loss between 5% and 95% across mtr cycles - the router replies but only sometimes).

tracepath -6

 1?: [LOCALHOST]                        0.027ms pmtu 1500
 1:  no reply
 2:  2a01:260:1::225                                       3.253ms 
 3:  2a01-260-1-1--9c.core6.t-2.net                        3.446ms 
 4:  2001:7f8:46:0:1::3303                                 9.705ms 
 5:  i00mil-005-loo179.bb.ip-plus.net                     10.304ms 
 6:  2001:4d98:a000::119                                  26.854ms asymm 11 
 7:  2001:b00:1:1:3::139                                  15.912ms asymm  8 
 8:  2001:b00:7fff:fc19::ebc9:2                           16.009ms 
 9:  2a07:2f40::1                                         15.021ms reached
     Resume: pmtu 1500 hops 9 back 7