AS58082 - AS-MESSAGENET MessagenetPARFC 4890 ✓RPKI ✓ 1/1ASPA -

AS overview

Test target: 2a01:9300::1 · static prefix probe · address space: PA · prefixes announced: 1

prefix(es): 2a01:9300::/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

We probed 35 arbitrary IPv6 address(es) inside AS58082's announced prefix(es). No router inside the prefix responded. The deepest visible hop was 2001:2035:0:2da9::2 at hop 14 - that router answers ICMPv6 Echo. This is not in AS58082'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 2026-09-23T12:01:50Z

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]                        0.018ms pmtu 1500
 1:  _gateway                                              0.781ms 
 1:  _gateway                                              0.680ms 
 2:  sox-pn.sox.rs                                         0.400ms 
 3:  2001:7f8:1e:8::3d                                    16.958ms asymm  2 
 4:  2001:67c:128c::699                                   17.369ms 
 5:  2a01:9300::1                                         56.956ms reached
     Resume: pmtu 1500 hops 5 back 8 

From DE host (Berlin)   openRFC 4890 ✓

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

Path (traceroute + mtr + PTR)

tracepath -6

 1?: [LOCALHOST]                        0.029ms pmtu 1500
 1:  xe-0-0-13-178.gw01.ber01.as59645.net                  0.541ms 
 1:  xe-0-0-13-178.gw01.ber01.as59645.net                  0.460ms 
 2:  ae0-2453.cr10.ber01.lwlcom.net                        0.747ms 
 3:  ae0-150.cr10.fra01.lwlcom.net                        10.348ms asymm  7 
 4:  ae0-100.cr10.fra02.lwlcom.net                        10.631ms asymm  8 
 5:  ffm-b29-link.ip.twelve99.net                         12.255ms asymm  9 
 6:  ffm-bb2-link.ip.twelve99.net                         27.944ms asymm  7 
 7:  mno-b8-link.ip.twelve99.net                          20.958ms asymm  6 
 8:  rom-b4-link.ip.twelve99.net                          29.617ms asymm  7 
 9:  rom-b3-link.ip.twelve99.net                          28.551ms asymm  8 
10:  messagenetspa-ic-395664.ip.twelve99-cust.net         28.352ms asymm  9 
11:  2a01:9300::1                                         30.323ms reached
     Resume: pmtu 1500 hops 11 back 10 

From DE host (Düsseldorf)   openRFC 4890 ✓

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

Path (traceroute + mtr + PTR)

tracepath -6

 1?: [LOCALHOST]                        0.018ms pmtu 1500
 1:  xe-0-0-12-142.gw01.dus01.as59645.net                  0.334ms 
 1:  xe-0-0-12-142.gw01.dus01.as59645.net                  0.279ms 
 2:  eth1-0-12-h5594.edge5-dus1.bb.wiit.network            1.167ms 
 3:  no reply
 4:  lag11.core3-dus1.bb.wiit.network                      0.417ms 
 5:  ddf-b4-link.ip.twelve99.net                           0.832ms 
 6:  ddf-b5-link.ip.twelve99.net                           3.427ms 
 7:  ffm-bb1-link.ip.twelve99.net                         21.769ms asymm  6 
 8:  mno-b8-link.ip.twelve99.net                          15.120ms asymm  5 
 9:  rom-b4-link.ip.twelve99.net                          23.839ms asymm  6 
10:  rom-b3-link.ip.twelve99.net                          22.749ms asymm  7 
11:  messagenetspa-ic-395664.ip.twelve99-cust.net         22.723ms asymm  8 
12:  2a01:9300::1                                         30.005ms reached
     Resume: pmtu 1500 hops 12 back 9 

From NL host (go6lab)   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]                        0.032ms pmtu 1500
 1:  2a00:8642:42::2                                       4.809ms 
 1:  2a00:8642:42::2                                       2.423ms 
 2:  gw.friends.steffann.nl                                5.422ms 
 3:  2a00:1ca8:1::194                                      6.108ms 
 4:  2a03:3f40::10:41                                      5.444ms 
 5:  2001:978:2:40::3:1                                    7.188ms 
 6:  be3457.ccr41.ams03.atlas.cogentco.com                 8.235ms 
 7:  2001:978:3::26                                        4.711ms asymm  6 
 8:  adm-bb1-link.ip.twelve99.net                          5.661ms asymm  7 
 9:  no reply
10:  mno-b8-link.ip.twelve99.net                         190.567ms asymm  9 
11:  rom-b4-link.ip.twelve99.net                          37.241ms asymm 10 
12:  rom-b3-link.ip.twelve99.net                          41.761ms asymm 11 
13:  messagenetspa-ic-395664.ip.twelve99-cust.net         41.069ms asymm 12 
14:  2a01:9300::1                                         49.274ms reached
     Resume: pmtu 1500 hops 14 back 13 

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]                        0.029ms pmtu 1500
 1:  no reply
 2:  no reply
 3:  2a12:d8c0:109f:106::a2                                3.602ms 
 4:  ae8-202.RT.CLR.MIL.IT.retn.net                        8.050ms asymm  5 
 5:  2001:41a8:20:2::35                                   15.083ms 
 6:  rom2-loop0-v6.rom.seabone.net                        34.238ms asymm  8 
 7:  rom2-loop0-v6.rom.seabone.net                        32.105ms asymm  8 
 8:  2001:41a8:60:2::122                                  33.316ms 
 9:  2a01:9300::1                                         26.832ms reached
     Resume: pmtu 1500 hops 9 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 (loss between 5% and 95% across mtr cycles - the router replies but only sometimes).

tracepath -6

 1?: [LOCALHOST]                        0.012ms pmtu 9000
 1:  fw1-lju.6connect.com                                  0.449ms 
 1:  fw1-lju.6connect.com                                  0.482ms 
 2:  ccr-to-fw-ccr1-gw-lju.6connect.com                    0.842ms 
 3:  2a00:ee1:800:9::1                                     1.881ms 
 4:  2a00:ee0:1:15::2                                      1.287ms asymm  3 
 5:  2a00:ee0:1:10::2                                      1.476ms pmtu 1500
 5:  2001:41a8:20:2::169                                   9.851ms asymm  6 
 6:  rom2-loop0-v6.rom.seabone.net                        20.473ms asymm  7 
 7:  2001:41a8:60:2::122                                  16.331ms 
 8:  2a01:9300::1                                         19.630ms reached
     Resume: pmtu 1500 hops 8 back 8 

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]                        0.028ms pmtu 1500
 1:  no reply
 2:  2a01:260:1::225                                       6.834ms 
 3:  2a01-260-1-1--9a.core6.t-2.net                        2.787ms 
 4:  2a01-260-1-1--39.core6.t-2.net                        3.206ms asymm  3 
 5:  hurricane-electric.nikhef.nlsix.net                  34.556ms asymm  4 
 6:  be47.core3.ams1.he.net                               39.493ms 
 7:  be47.core3.ams1.he.net                               39.048ms asymm  6 
 8:  adm-b3-link.ip.twelve99.net                          32.982ms asymm  5 
 9:  prs-bb1-link.ip.twelve99.net                         38.348ms asymm  5 
10:  prs-bb2-link.ip.twelve99.net                         45.845ms asymm  5 
11:  rom-b4-link.ip.twelve99.net                          60.727ms asymm  5 
12:  rom-b3-link.ip.twelve99.net                          55.684ms asymm  5 
13:  messagenetspa-ic-395664.ip.twelve99-cust.net         59.485ms asymm  6 
14:  2a01:9300::1                                         64.296ms reached
     Resume: pmtu 1500 hops 14 back 7