AS58180 - datmit-AS58180 DatMit s.r.lPI/PARFC 4890 ✓RPKI ✓ 1/1ASPA -

AS overview

Test target: 2a14:9380::60 · ns.datmit.com · address space: mixed · prefixes announced: 1

prefix(es): 2a14:9380::/32

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

We probed 35 arbitrary IPv6 address(es) inside AS58180's announced prefix(es). No router inside the prefix responded. The deepest visible hop was 2001:1bd0:1:65::2 at hop 13 - that router answers ICMPv6 Echo. This is not in AS58180'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 2026-09-23T12:09:46Z

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]                        0.014ms pmtu 1500
 1:  _gateway                                              0.478ms 
 1:  _gateway                                              6.689ms 
 2:  2001:7f8:1e::4                                        0.658ms 
 3:  2001:7f8:30:0:2:1:0:9002                             14.069ms 
 4:  RT.MIX.MIL.IT.retn.net                               25.747ms 
 5:  GW-AS41720.retn.net                                  28.668ms 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
16:  no reply
17:  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)

tracepath -6

 1?: [LOCALHOST]                        0.024ms pmtu 1500
 1:  xe-0-0-13-178.gw01.ber01.as59645.net                  0.313ms 
 1:  xe-0-0-13-178.gw01.ber01.as59645.net                  0.392ms 
 2:  ae0-2453.cr10.ber01.lwlcom.net                        0.675ms 
 3:  retn.bcix.de                                         10.567ms asymm  5 
 4:  RT.MIX.MIL.IT.retn.net                               19.149ms asymm  5 
 5:  GW-AS41720.retn.net                                  19.578ms asymm  7 
 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
16:  no reply
17:  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 6 (loss between 5% and 95% across mtr cycles - the router replies but only sometimes).

tracepath -6

 1?: [LOCALHOST]                        0.037ms pmtu 1500
 1:  xe-0-0-12-142.gw01.dus01.as59645.net                  0.417ms 
 1:  xe-0-0-12-142.gw01.dus01.as59645.net                  0.321ms 
 2:  eth1-0-12-h5594.edge5-dus1.bb.wiit.network            1.089ms 
 3:  no reply
 4:  lag11.core3-dus1.bb.wiit.network                      0.463ms 
 5:  lag2.core1-dus-ix.bb.wiit.network                     0.560ms 
 6:  de-cix1.rt.act.fkt.de.retn.net                        4.663ms asymm  4 
 7:  RT.MIX.MIL.IT.retn.net                               12.945ms asymm  4 
 8:  GW-AS41720.retn.net                                  13.228ms asymm  6 
 9:  no reply
10:  no reply
11:  no reply
12:  no reply
13:  no reply
14:  no reply
15:  no reply
16:  no reply
17:  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)

tracepath -6

 1?: [LOCALHOST]                        0.024ms pmtu 1500
 1:  2a00:8642:42::2                                       2.507ms 
 1:  2a00:8642:42::2                                       3.093ms 
 2:  no reply
 3:  2a00:1ca8:1::194                                      4.747ms 
 4:  2a03:3f40::10:33                                      6.285ms 
 5:  ams-ix.retn.net                                       6.938ms asymm  7 
 6:  RT.MIX.MIL.IT.retn.net                               22.725ms 
 7:  GW-AS41720.retn.net                                  27.667ms asymm 10 
 8:  no reply
 9:  no reply
10:  no reply
11:  no reply
12:  no reply
13:  no reply
14:  no reply
15:  no reply
16:  no reply
17:  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 3 (loss between 5% and 95% across mtr cycles - the router replies but only sometimes).

tracepath -6

 1?: [LOCALHOST]                        0.032ms pmtu 1500
 1:  karsolink-01.net.karsolink.com                        0.811ms 
 2:  2a12:d8c0:109f:121::a1                                0.700ms 
 3:  no reply
 4:  no reply
 5:  no reply
 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
16:  no reply
17:  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 4 (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                                  0.547ms 
 1:  fw1-lju.6connect.com                                  0.590ms 
 2:  no reply
 3:  2a03:a100:0:201:1::1                                  1.200ms 
 4:  2a03:a100:0:201:1::1                                  1.012ms pmtu 1500
 4:  e0-1.core1.lju1.he.net                                2.577ms 
 5:  no reply
 6:  port-channel1.core1.zag2.he.net                       4.408ms 
 7:  no reply
 8:  navigabene-v6.mix-it.net                             20.081ms asymm 12 
 9:  no reply
10:  no reply
11:  no reply
12:  no reply
13:  no reply
14:  no reply
15:  no reply
16:  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 5, hop 6 (loss between 5% and 95% across mtr cycles - the router replies but only sometimes).

tracepath -6

 1?: [LOCALHOST]                        0.072ms pmtu 1500
 1:  no reply
 2:  2a01:260:1::225                                       5.200ms 
 3:  2a01-260-1-1--9c.core6.t-2.net                        3.012ms 
 4:  2a01-260-1-1--39.core6.t-2.net                        3.442ms asymm  3 
 5:  be1.core2.fra2.he.net                                38.342ms 
 6:  be3.core4.fra1.he.net                                49.667ms asymm  7 
 7:  be10.core1.zrh2.he.net                               50.641ms asymm  8 
 8:  be10.core1.zrh2.he.net                               57.317ms 
 9:  be1.core1.mil2.he.net                                34.490ms asymm  7 
10:  navigabene-v6.mix-it.net                             37.761ms asymm  6 
11:  navigabene-v6.mix-it.net                             38.004ms asymm  6 
12:  no reply
13:  no reply
14:  no reply
15:  no reply
16:  no reply
17:  no reply
     Too many hops: pmtu 1500
     Resume: pmtu 1500