AS overview
Test target: 2a09:5dc3:ffff::1 · static prefix probe · address space: PA · prefixes announced: 1
prefix(es): 2a09:5dc3:ffff::/48
Targets & per-vantage-point probe results (1 target(s) across 3 vantage point(s))
Source codes (hover any badge for full description): CUR=curated · NS/SOA/MX=DNS records · SPF=SPF TXT · DRV=holder-derived (www, ns1, mail, gw, …) · ATL=RIPE Atlas · PDB=PeeringDB · WHOIS=RIPE whois · RDAP=RIPE RDAP · HIT=IPv6 Hitlist · RTR=in-prefix path hop (router) · PRB=static prefix probe · SYN=synthetic prefix::1 fallback
| Target IP / hostname | Source | NL host (go6lab) | ITA host (Karsolink) | SLO host (6connect) | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ping | 1500B | :80 | :443 | reached | ping | 1500B | :80 | :443 | reached | ping | 1500B | :80 | :443 | reached | ||
2a09:5dc3:ffff::1 | prb | ✓ | ✓ | ? | ? | ✓ | ✓ | ✓ | refused | refused | ✓ | ✓ | ✓ | refused | refused | ✓ |
MIX-IT / NAMEX / MINAP / TOP-IX / VSIX / EQUINIX-MILAN / BGPX-ROME / NAMEX-BARI / PCIX / DECIX-PALERMO peering
Not an MIX-IT / NAMEX / MINAP / TOP-IX / VSIX / EQUINIX-MILAN / BGPX-ROME / NAMEX-BARI / PCIX / DECIX-PALERMO member, but our traceroute path crosses the MIX-IT / NAMEX / MINAP / TOP-IX / VSIX / EQUINIX-MILAN / BGPX-ROME / NAMEX-BARI / PCIX / DECIX-PALERMO LAN from ITA host (Karsolink), SLO host (6connect) - reached via an MIX-IT / NAMEX / MINAP / TOP-IX / VSIX / EQUINIX-MILAN / BGPX-ROME / NAMEX-BARI / PCIX / DECIX-PALERMO-resident transit operator.
RPKI & ASPA
1 of 1 prefix(es) covered by a valid ROA.
| Prefix | RPKI state | Reason | Covering VRP(s) |
|---|---|---|---|
2a09:5dc3:ffff::/48 | ✓ valid | matched VRP (correct origin, length within maxLength) | AS209387 /48 maxLen 48 (ripe); AS44084 /30 maxLen 30 (ripe) |
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 2026-05-30T12:46:29Z
From NL host (go6lab) openRFC 4890 ✓
filter likely at: (none) · min PMTU on path: 1500
Path (traceroute + mtr + PTR)
| # | IP / PTR | RTT | mtr loss | AS | AS holder |
|---|---|---|---|---|---|
| 1 | 2a00:8642:42::3 | 1.6ms | 0% | AS203993 | STEFFANN-DC-AS - S.J.M. Steffann, NL |
| 2 | * | - | 0%* | - | |
| 3 | ccr2-ccr1.dc1.nogalliance.org 2a00:8642:dc1:2::b | 2.6ms | 0% | AS203993 | STEFFANN-DC-AS - S.J.M. Steffann, NL |
| 4 | ams-ix.ipv6.itgate.net 2001:7f8:1::a501:2779:1 | 4.5ms | 10% | - | NA |
| 5 | be12.Woogie.core.MIL2.ipv6.ITgate.net 2001:1418:1::f2 | 19.2ms | 0% | AS12779 | ITGATE - IT.Gate S.p.A., IT |
| 6 | multiwire-MIL-gw6.customer.itgate.net 2001:1418:9:1::82 | 19.4ms | 0% | AS12779 | ITGATE - IT.Gate S.p.A., IT |
| 7 | 2a09:6240:0:7::1 | 26.3ms | 0% | AS44084 | MULTIWIRE-AS - Multiwire S.r.l., IT |
| 8 | 2a09:5dc3:ffff::1 | 26.2ms | 0% | AS209387 | NEMEXI - NEMEXI SRL, IT |
Rate-limited ICMPv6: hop 4 (loss between 5% and 95% across mtr cycles - the router replies but only sometimes).
tracepath -6
1?: [LOCALHOST] 0.037ms pmtu 1500
1: 2a00:8642:42::3 2.018ms
1: 2a00:8642:42::3 2.015ms
2: gw.friends.steffann.nl 2.614ms
3: ccr2-ccr1.dc1.nogalliance.org 2.759ms asymm 2
4: ams-ix.ipv6.itgate.net 4.646ms asymm 3
5: be12.Woogie.core.MIL2.ipv6.ITgate.net 19.416ms
6: multiwire-MIL-gw6.customer.itgate.net 19.239ms
7: 2a09:6240:0:7::1 26.210ms
8: 2a09:5dc3:ffff::1 26.125ms 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)
| # | IP / PTR | RTT | mtr loss | AS | AS holder |
|---|---|---|---|---|---|
| 1 | * | - | 0%* | - | |
| 2 | * | - | - | - | |
| 3 | 2a12:d8c0:101f:103::1 | 8.6ms | 50% | AS204471 | KARSOLINK - 2S Computers SRL, IT |
| 4 | multiwire-AS44084.mix-it.net @MIX-IT / NAMEX / MINAP / TOP-IX / VSIX / EQUINIX-MILAN / BGPX-ROME / NAMEX-BARI / PCIX / DECIX-PALERMO 2001:7f8:b:100:1d1:a5d4:4084:69 | 8.6ms | 0% | - | NA |
| 5 | 2a09:6240:0:7::1 | 15.7ms | 0% | AS44084 | MULTIWIRE-AS - Multiwire S.r.l., IT |
| 6 | 2a09:5dc3:ffff::1 | 16.2ms | 0% | AS209387 | NEMEXI - NEMEXI SRL, IT |
Rate-limited ICMPv6: hop 3 (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 0.882ms
3: 2a12:d8c0:101f:103::1 9.028ms
4: multiwire-AS44084.mix-it.net 9.251ms
5: 2a09:6240:0:7::1 16.219ms
6: 2a09:5dc3:ffff::1 16.386ms reached
Resume: pmtu 1500 hops 6 back 6 From SLO host (6connect) openRFC 4890 ✓
filter likely at: (none) · min PMTU on path: 1500
Path (traceroute + mtr + PTR)
| # | IP / PTR | RTT | mtr loss | AS | AS holder |
|---|---|---|---|---|---|
| 1 | fw1-lju.6connect.com 2607:fae0:a000::2 | 0.3ms | 0%* | AS8038 | 6CONNECT - 6connect, Inc., US |
| 2 | * | - | - | - | |
| 3 | * | - | 70% | - | |
| 4 | e0-1.core1.lju1.he.net 2001:470:1:5be::1 | 2.3ms | 80% | AS6939 | HURRICANE - Hurricane Electric LLC, US |
| 5 | * | - | - | - | |
| 6 | port-channel1.core1.zag2.he.net 2001:470:0:2ea::2 | 4.0ms | 90% | AS6939 | HURRICANE - Hurricane Electric LLC, US |
| 7 | * | - | - | - | |
| 8 | multiwire-AS44084.mix-it.net @MIX-IT / NAMEX / MINAP / TOP-IX / VSIX / EQUINIX-MILAN / BGPX-ROME / NAMEX-BARI / PCIX / DECIX-PALERMO 2001:7f8:b:100:1d1:a5d4:4084:69 | 10.2ms | 0% | - | NA |
| 9 | 2a09:6240:0:7::1 | 17.3ms | 0% | AS44084 | MULTIWIRE-AS - Multiwire S.r.l., IT |
| 10 | 2a09:5dc3:ffff::1 | 17.3ms | 0% | AS209387 | NEMEXI - NEMEXI SRL, IT |
Rate-limited ICMPv6: hop 3, hop 4, hop 6 (loss between 5% and 95% across mtr cycles - the router replies but only sometimes).
tracepath -6
1?: [LOCALHOST] 0.036ms pmtu 1500
1: fw1-lju.6connect.com 0.576ms
1: fw1-lju.6connect.com 0.505ms
2: no reply
3: 2a03:a100:0:201:1::1 0.787ms
4: e0-1.core1.lju1.he.net 1.914ms
5: no reply
6: port-channel1.core1.zag2.he.net 4.183ms
7: no reply
8: multiwire-AS44084.mix-it.net 10.495ms asymm 6
9: 2a09:6240:0:7::1 18.394ms asymm 7
10: 2a09:5dc3:ffff::1 18.422ms reached
Resume: pmtu 1500 hops 10 back 8