AS213522 - INIX INIX Group Italia S.r.lPARFC 4890 ✓RPKI ✓ 2/2ASPA -

AS overview

Test target: 2a14:ec0:16::1 · static prefix probe · address space: PA · prefixes announced: 2

prefix(es): 2a14:ec0:16::/48, 2a14:ec0:20::/48

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

We probed 70 arbitrary IPv6 address(es) inside AS213522's announced prefix(es). No router inside the prefix responded. The deepest visible hop was 2001:978:2:11::21 at hop 14 - that router answers ICMPv6 Echo. This is not in AS213522'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 2026-09-23T12:09:51Z

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]                        0.012ms pmtu 1500
 1:  _gateway                                              0.499ms 
 1:  _gateway                                              0.427ms 
 2:  sox-pn.sox.rs                                         0.358ms 
 3:  2001:7f8:1e:8::3d                                     0.701ms asymm  2 
 4:  2001:67c:128c::699                                   19.667ms 
 5:  2a14:ec0:16::1                                       53.790ms reached
     Resume: pmtu 1500 hops 5 back 11 

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                  0.465ms 
 1:  xe-0-0-13-178.gw01.ber01.as59645.net                  0.384ms 
 2:  ae0-2453.cr10.ber01.lwlcom.net                        0.796ms 
 3:  ae0-150.cr10.fra01.lwlcom.net                         9.964ms asymm  7 
 4:  ae0-100.cr10.fra02.lwlcom.net                        10.502ms asymm  8 
 5:  2001:978:2:42::154:c                                 10.963ms asymm  9 
 6:  be7948.ccr42.fra05.atlas.cogentco.com                10.862ms asymm 10 
 7:  be5516.ccr21.muc03.atlas.cogentco.com                16.515ms asymm 11 
 8:  port-channel5891.ccr91.mil02.atlas.cogentco.com      24.497ms asymm 12 
 9:  be10060.agr72.mil02.atlas.cogentco.com               24.989ms asymm 13 
10:  be10073.nr61.b069977-0.mil02.atlas.cogentco.com      27.145ms asymm 14 
11:  2a14:ec0:16::1                                       27.430ms reached
     Resume: pmtu 1500 hops 11 back 15 

From DE host (Düsseldorf)   openRFC 4890 ✓

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

Path (traceroute + mtr + PTR)

tracepath -6

 1?: [LOCALHOST]                        0.028ms pmtu 1500
 1:  xe-0-0-12-142.gw01.dus01.as59645.net                  0.340ms 
 1:  xe-0-0-12-142.gw01.dus01.as59645.net                  0.244ms 
 2:  eth1-0-12-h5594.edge5-dus1.bb.wiit.network            1.840ms 
 3:  no reply
 4:  lag11.core3-dus1.bb.wiit.network                      0.499ms 
 5:  lag0-vl1001.core4-dus1.bb.wiit.network                0.549ms 
 6:  2001:978:2:6::20                                      1.006ms 
 7:  be3690.rcr21.dus01.atlas.cogentco.com                 1.891ms 
 8:  be5490.ccr41.fra05.atlas.cogentco.com                 4.935ms asymm  9 
 9:  be7944.ccr22.muc03.atlas.cogentco.com                10.832ms asymm 10 
10:  port-channel5891.ccr91.mil02.atlas.cogentco.com      18.653ms asymm 11 
11:  be5652.agr71.mil02.atlas.cogentco.com                18.881ms asymm 12 
12:  be10072.nr61.b069977-0.mil02.atlas.cogentco.com      20.952ms asymm 13 
13:  2a14:ec0:16::1                                       21.559ms reached
     Resume: pmtu 1500 hops 13 back 14 

From NL host (go6lab)   openRFC 4890 ✓

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

Path (traceroute + mtr + PTR)

Rate-limited ICMPv6: hop 5, hop 6, hop 10, hop 11 (loss between 5% and 95% across mtr cycles - the router replies but only sometimes).

tracepath -6

 1?: [LOCALHOST]                        0.040ms pmtu 1500
 1:  2a00:8642:42::2                                       3.857ms 
 1:  2a00:8642:42::2                                       2.013ms 
 2:  gw.friends.steffann.nl                                4.942ms 
 3:  2a00:1ca8:1::194                                      6.701ms 
 4:  2a03:3f40::10:41                                      5.784ms 
 5:  2001:b28:3ff::1b1b:0:1                               30.598ms 
 6:  be9.core4.fra1.he.net                                30.182ms asymm  4 
 7:  be10.core1.zrh2.he.net                               38.943ms asymm  5 
 8:  be1.core1.mil2.he.net                                40.435ms asymm  6 
 9:  no reply
10:  no reply
11:  cr2-hu0-0-0-3-703.ip6.it3.aruba.it                  521.590ms asymm  9 
12:  er2-hu0-0-0-20.ip6.it3.aruba.it                      40.424ms asymm 10 
13:  2a14:ec0:16::1                                       44.058ms reached
     Resume: pmtu 1500 hops 13 back 12 

From ITA host (Karsolink)   openRFC 4890 ✓

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

Path (traceroute + mtr + PTR)

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

tracepath -6

 1?: [LOCALHOST]                        0.056ms pmtu 1500
 1:  no reply
 2:  2a12:d8c0:109f:121::a1                                1.119ms 
 3:  2a12:d8c0:101f:103::1                                 9.055ms 
 4:  2001:7f8:b9::24:1                                    19.769ms asymm  8 
 5:  cr2-hu0-0-0-3-704.ip6.it3.aruba.it                   14.152ms asymm  6 
 6:  er2-hu0-0-0-20.ip6.it3.aruba.it                      11.301ms asymm  7 
 7:  2a14:ec0:16::1                                       12.131ms reached
     Resume: pmtu 1500 hops 7 back 9 

From SLO host (6connect)   openRFC 4890 ✓

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

Path (traceroute + mtr + PTR)

Rate-limited ICMPv6: hop 3, hop 4, hop 6, hop 8, hop 9 (loss between 5% and 95% across mtr cycles - the router replies but only sometimes).

tracepath -6

 1?: [LOCALHOST]                        0.028ms pmtu 9000
 1:  fw1-lju.6connect.com                                  0.649ms 
 1:  fw1-lju.6connect.com                                  0.766ms 
 2:  no reply
 3:  2a03:a100:0:201:1::1                                216.225ms 
 4:  2a03:a100:0:201:1::1                                  0.911ms pmtu 1500
 4:  e0-1.core1.lju1.he.net                                2.352ms 
 5:  no reply
 6:  port-channel1.core1.zag2.he.net                       3.982ms 
 7:  no reply
 8:  no reply
 9:  no reply
10:  er2-hu0-0-0-20.ip6.it3.aruba.it                      11.915ms asymm  8 
11:  2a14:ec0:16::1                                       21.295ms reached
     Resume: pmtu 1500 hops 11 back 11 

From SLO host (T-2)   openRFC 4890 ✓

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

Path (traceroute + mtr + PTR)

Rate-limited ICMPv6: hop 8, hop 9 (loss between 5% and 95% across mtr cycles - the router replies but only sometimes).

tracepath -6

 1?: [LOCALHOST]                        0.026ms pmtu 1500
 1:  no reply
 2:  2a01:260:1::225                                      14.847ms 
 3:  2a01-260-1-1--9a.core6.t-2.net                        3.544ms 
 4:  2a01-260-1-1--38.core6.t-2.net                        3.432ms asymm  3 
 5:  port-channel1.core1.zag2.he.net                      10.986ms asymm  7 
 6:  port-channel1.core1.zag2.he.net                      10.721ms asymm  7 
 7:  no reply
 8:  cr2-hu0-0-0-3-703.ip6.it3.aruba.it                   19.183ms 
 9:  er2-hu0-0-0-20.ip6.it3.aruba.it                      19.671ms 
10:  er2-hu0-0-0-20.ip6.it3.aruba.it                      19.218ms asymm  9 
11:  2a14:ec0:16::1                                       20.877ms reached
     Resume: pmtu 1500 hops 11 back 10