AS overview
Test target: 2a0a:f980::1 · static prefix probe · address space: PA · prefixes announced: 1
prefix(es): 2a0a:f980::/29
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 | ||
2a0a:f980::1 | prb | ✓ | ✓ | ? | ? | ✓ | ✓ | ✓ | refused | refused | ✓ | ✓ | ✓ | refused | refused | ✓ |
MIX-IT / NAMEX / MINAP / TOP-IX / VSIX / EQUINIX-MILAN / BGPX-ROME / NAMEX-BARI / PCIX / DECIX-PALERMO peering
MIX-IT / NAMEX / MINAP / TOP-IX / VSIX / EQUINIX-MILAN / BGPX-ROME / NAMEX-BARI / PCIX / DECIX-PALERMO member - Open peering, peering member, since 2017-02-04. IPv6 LAN: 2001:7f8:b:100:1d1:a5d5:877:225. Locations: -.
RPKI & ASPA
1 of 1 prefix(es) covered by a valid ROA.
| Prefix | RPKI state | Reason | Covering VRP(s) |
|---|---|---|---|
2a0a:f980::/29 | ✓ valid | matched VRP (correct origin, length within maxLength) | AS50877 /29 maxLen 29 (ripe) |
Random-IP probe (yarrp) into the AS' prefixes
We probed 15 arbitrary IPv6 address(es) inside AS50877's announced prefix(es). No router inside the prefix responded. The deepest visible hop was 2a11:4140::29 at hop 12 - that router answers ICMPv6 Echo. This is not in AS50877'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 2026-05-30T12:46:44Z
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 | 1.4ms | 0% | AS203993 | STEFFANN-DC-AS - S.J.M. Steffann, NL |
| 2 | gw.friends.steffann.nl 2a00:8642:1000:f000::1 | 2.4ms | 0%* | AS203993 | STEFFANN-DC-AS - S.J.M. Steffann, NL |
| 3 | speed-ix.inter.link 2001:7f8:b7::a500:5405:1 | 3.0ms | 0% | - | NA |
| 4 | r4-ams1-nl.as5405.net 2a11:4140::10 | 19.0ms | 0% | AS5405 | INTERDOTLINK - Inter.link GmbH, DE |
| 5 | r6-ams1-nl.as5405.net 2a11:4140::54 | 18.9ms | 0% | AS5405 | INTERDOTLINK - Inter.link GmbH, DE |
| 6 | r4-fra3-de.as5405.net 2a11:4140::37 | 18.9ms | 0% | AS5405 | INTERDOTLINK - Inter.link GmbH, DE |
| 7 | r3-fra2-de.as5405.net 2a11:4140::a | 19.0ms | 0% | AS5405 | INTERDOTLINK - Inter.link GmbH, DE |
| 8 | r4-fra2-de.as5405.net 2a11:4140::b | 18.9ms | 0% | AS5405 | INTERDOTLINK - Inter.link GmbH, DE |
| 9 | r7-fra1-de.as5405.net 2a11:4140::4c | 19.0ms | 0% | AS5405 | INTERDOTLINK - Inter.link GmbH, DE |
| 10 | r3-fra1-de.as5405.net 2a11:4140::6 | 18.9ms | 0% | AS5405 | INTERDOTLINK - Inter.link GmbH, DE |
| 11 | r1-zrh1-ch.as5405.net 2a11:4140::25 | 19.4ms | 0% | AS5405 | INTERDOTLINK - Inter.link GmbH, DE |
| 12 | r1-mil1-it.as5405.net 2a11:4140::29 | 18.8ms | 0% | AS5405 | INTERDOTLINK - Inter.link GmbH, DE |
| 13 | 2a0a:f980::1 | 19.5ms | 0% | AS50877 | AIRBEAM-AS - Airbeam S.r.l., IT |
tracepath -6
1?: [LOCALHOST] 0.037ms pmtu 1500
1: 2a00:8642:42::3 1.524ms
1: 2a00:8642:42::3 1.669ms
2: gw.friends.steffann.nl 2.411ms
3: speed-ix.inter.link 3.160ms asymm 4
4: r4-ams1-nl.as5405.net 19.546ms asymm 21
5: r6-ams1-nl.as5405.net 19.551ms asymm 20
6: r4-fra3-de.as5405.net 19.575ms asymm 19
7: r3-fra2-de.as5405.net 19.599ms asymm 18
8: r4-fra2-de.as5405.net 19.508ms asymm 17
9: r7-fra1-de.as5405.net 19.476ms asymm 16
10: r3-fra1-de.as5405.net 19.978ms asymm 15
11: r1-zrh1-ch.as5405.net 20.107ms asymm 14
12: r1-mil1-it.as5405.net 19.427ms asymm 13
13: 2a0a:f980::1 20.059ms reached
Resume: pmtu 1500 hops 13 back 13 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 | 2a12:d8c0:109f:121::a1 | 0.4ms | 0%* | AS204471 | KARSOLINK - 2S Computers SRL, IT |
| 3 | 2a12:d8c0:109f:106::a2 | 3.4ms | 0% | AS204471 | KARSOLINK - 2S Computers SRL, IT |
| 4 | 2a12:d8c0:1a1::a2 | 3.3ms | 0% | AS204471 | KARSOLINK - 2S Computers SRL, IT |
| 5 | 2a0a:f980::1 | 9.0ms | 0% | AS50877 | AIRBEAM-AS - Airbeam S.r.l., IT |
tracepath -6
1?: [LOCALHOST] 0.031ms pmtu 1500
1: karsolink-01.net.karsolink.com 0.834ms
2: 2a12:d8c0:109f:121::a1 1.012ms
3: 2a12:d8c0:109f:106::a2 3.615ms
4: 2a12:d8c0:1a1::a2 4.049ms
5: 2a0a:f980::1 9.951ms reached
Resume: pmtu 1500 hops 5 back 5 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 | 0.6ms | 0%* | AS8038 | 6CONNECT - 6connect, Inc., US |
| 2 | * | - | - | - | |
| 3 | * | - | - | - | |
| 4 | 2a00:ee0:1:10::2 | 1.2ms | 0% | AS5603 | SIOL-NET - Telekom Slovenije, d.d., SI |
| 5 | 2a11:4142:2002 | 1.1ms | 0% | - | |
| 6 | 2620:107:4008:e85::2 | 8.3ms | 0% | - | NA |
| 7 | 2a0a:f980::1 | 8.2ms | 0% | AS50877 | AIRBEAM-AS - Airbeam S.r.l., IT |
tracepath -6
1?: [LOCALHOST] 0.036ms pmtu 1500
1: fw1-lju.6connect.com 0.525ms
1: fw1-lju.6connect.com 0.555ms
2: no reply
3: 2a00:ee1:800:9::1 2.122ms
4: 2a00:ee0:1:15::2 1.205ms asymm 3
5: 2a11:4142:2002:: 1.062ms asymm 6
6: 2620:107:4008:e85::2 8.260ms asymm 7
7: 2a0a:f980::1 8.598ms reached
Resume: pmtu 1500 hops 7 back 7