AS31034 - ARUBA-ASN ArubaPI/PARFC 4890 ✓RPKI ✓ 5/5ASPA ✓

AS overview

Test target: 2a00:6d40:2:2082::f:1 · dns.technorail.com · address space: mixed · prefixes announced: 5

prefix(es): 2a00:6d40::/32, 2a00:6d44::/32, 2a00:6d41::/32, 2a00:6d40:5::/48, 2a00:6d42::/32

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 AS31034's announced prefix replied during the random-target probe. Hop(s): 2a00:6d40:1:16::a:2, 2a00:6d40:1:16::b:2, 2a00:6d40:1:16::c:2, 2a00:6d40:1:16::d:2, 2a00:6d40:1::1:159. 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 2026-09-23T12:00:57Z

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 7 (loss between 5% and 95% across mtr cycles - the router replies but only sometimes).

tracepath -6

 1?: [LOCALHOST]                        0.017ms pmtu 1500
 1:  _gateway                                              0.547ms 
 1:  _gateway                                              0.673ms 
 2:  sox-pn.sox.rs                                         0.464ms 
 3:  2001:7f8:1e:8::3d                                     1.196ms asymm  2 
 4:  ae8-930.RT.IRX.VIE.AT.retn.net                       12.774ms asymm  3 
 5:  RT.VSX.PDA.IT.retn.net                               20.877ms asymm  4 
 6:  GW-Aruba.retn.net                                    32.072ms asymm  7 
 7:  cr2-hu0-0-0-3-721.ip6.it1.aruba.it                   35.573ms asymm  6 
 8:  no reply
 9:  no reply
10:  no reply
11:  no reply
12:  no reply
13:  no reply
14:  no reply
15:  no reply
     Too many hops: pmtu 1500
     Resume: pmtu 1500 

From DE host (Berlin)   openRFC 4890 ✓

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

Path (traceroute + mtr + PTR)

Rate-limited ICMPv6: hop 3, 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:  xe-0-0-13-178.gw01.ber01.as59645.net                  0.463ms 
 1:  xe-0-0-13-178.gw01.ber01.as59645.net                  0.442ms 
 2:  ae0-2453.cr10.ber01.lwlcom.net                        0.878ms 
 3:  retn.bcix.de                                         10.978ms asymm  5 
 4:  RT.VSX.PDA.IT.retn.net                               22.924ms asymm  5 
 5:  GW-Aruba.retn.net                                    28.789ms asymm 13 
 6:  no reply
 7:  no reply
 8:  no reply
 9:  no reply
10:  no reply
11:  no reply
12:  no reply
13:  no reply
14:  no reply
15:  no reply
     Too many hops: pmtu 1500
     Resume: pmtu 1500 

From DE host (Düsseldorf)   openRFC 4890 ✓

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

Path (traceroute + mtr + PTR)

Rate-limited ICMPv6: hop 13, hop 14 (loss between 5% and 95% across mtr cycles - the router replies but only sometimes).

tracepath -6

 1?: [LOCALHOST]                        0.017ms pmtu 1500
 1:  xe-0-0-12-142.gw01.dus01.as59645.net                  0.400ms 
 1:  xe-0-0-12-142.gw01.dus01.as59645.net                  0.294ms 
 2:  eth1-0-12-h5594.edge5-dus1.bb.wiit.network           10.272ms 
 3:  no reply
 4:  lag30.core3-dus1.bb.wiit.network                      0.406ms 
 5:  lag0-vl1011.core1-fra-ix.bb.wiit.network              4.195ms 
 6:  lag0-vl1001.core1-nbg-ncd.bb.wiit.network             6.811ms 
 7:  lag0-vl6.core2-nbg-ncd.bb.wiit.network                6.806ms 
 8:  lag0-vl1006.core2-muc2.bb.wiit.network                9.422ms 
 9:  lag0-vl1009.core1-muc-eq3.bb.wiit.network             9.941ms 
10:  lag0-vl1001.core1-pda-vsix.bb.wiit.network           20.299ms 
11:  lag0-vl1001.core1-mil-mix.bb.wiit.network            20.390ms asymm  9 
12:  lag0-vl5.core3-mil-irid.bb.wiit.network              20.116ms asymm  8 
13:  no reply
14:  no reply
15:  no reply
     Too many hops: pmtu 1500
     Resume: pmtu 1500 

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

tracepath -6

 1?: [LOCALHOST]                        0.022ms pmtu 1500
 1:  2a00:8642:42::2                                       1.726ms 
 1:  2a00:8642:42::2                                       1.366ms 
 2:  no reply
 3:  speed-ix.he.net                                       9.208ms 
 4:  be2.core4.fra1.he.net                                12.870ms 
 5:  be10.core1.zrh2.he.net                               18.334ms 
 6:  be1.core1.mil2.he.net                                24.826ms 
 7:  no reply
 8:  no reply
 9:  no reply
10:  no reply
11:  no reply
12:  no reply
13:  no reply
14:  no reply
15:  no reply
     Too many hops: pmtu 1500
     Resume: pmtu 1500 

From ITA host (Karsolink)   openRFC 4890 ✓

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

Path (traceroute + mtr + PTR)

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

tracepath -6

 1?: [LOCALHOST]                        0.031ms pmtu 1500
 1:  no reply
 2:  2a12:d8c0:109f:121::a1                                0.441ms 
 3:  no reply
 4:  no reply
 5:  cr2-hu0-0-0-3-702.ip6.it1.aruba.it                   19.119ms asymm  6 
 6:  no reply
 7:  no reply
 8:  no reply
 9:  no reply
10:  no reply
11:  no reply
12:  no reply
13:  no reply
14:  no reply
15:  no reply
     Too many hops: pmtu 1500
     Resume: pmtu 1500 

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]                        0.017ms pmtu 9000
 1:  fw1-lju.6connect.com                                  0.556ms 
 1:  fw1-lju.6connect.com                                  0.572ms 
 2:  no reply
 3:  2a03:a100:0:201:1::1                                  1.248ms 
 4:  2a03:a100:0:201:1::1                                  1.559ms pmtu 1500
 4:  e0-1.core1.lju1.he.net                                2.076ms 
 5:  no reply
 6:  port-channel1.core1.zag2.he.net                       4.072ms 
 7:  no reply
 8:  no reply
 9:  cr1-hu0-0-0-3-702.ip6.it1.aruba.it                   19.748ms asymm  8 
10:  no reply
11:  no reply
12:  no reply
13:  no reply
14:  no reply
15:  no reply
     Too many hops: pmtu 1500

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 (loss between 5% and 95% across mtr cycles - the router replies but only sometimes).

tracepath -6

 1?: [LOCALHOST]                        0.029ms pmtu 1500
 1:  2a01:261:313:b814::1                                  0.957ms 
 2:  2a01:260:1::225                                       5.893ms 
 3:  2a01-260-1-1--9a.core6.t-2.net                        3.544ms 
 4:  2a01-260-1-1--38.core6.t-2.net                        3.323ms asymm  3 
 5:  port-channel1.core1.zag2.he.net                       8.924ms asymm  7 
 6:  port-channel1.core1.zag2.he.net                       9.085ms asymm  7 
 7:  no reply
 8:  ???                                                  25.735ms 
 9:  no reply
10:  no reply
11:  no reply
12:  no reply
13:  no reply
14:  no reply
15:  no reply
     Too many hops: pmtu 1500
     Resume: pmtu 1500