AS overview
Test target: 2a07:7680::2 · static prefix probe · address space: PA · prefixes announced: 1
prefix(es): 2a07:7680::/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 | ||
2a07:7680::2 | 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 2020-04-10. IPv6 LAN: 2001:7f8:b:100:1d1:a5d4:4747:104. Locations: -.
RPKI & ASPA
1 of 1 prefix(es) covered by a valid ROA.
| Prefix | RPKI state | Reason | Covering VRP(s) |
|---|---|---|---|
2a07:7680::/29 | ✓ valid | matched VRP (correct origin, length within maxLength) | AS44747 /29 maxLen 29 (ripe) |
Random-IP probe (yarrp) into the AS' prefixes
At least one router inside AS44747's announced prefix replied during the random-target probe. Hop(s): 2a07:7680::15be:2cc1:1b3b:970, 2a07:7680::206c:672:3648:295f, 2a07:7680::2e40:895:3ffc:c14, 2a07:7680::79f4:43f2:d35c:3ebc, 2a07:7680::8cf4:4c4d:b1d8:50ee. 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 2026-05-30T12:46:20Z
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 | 1.1ms | 0% | AS203993 | STEFFANN-DC-AS - S.J.M. Steffann, NL |
| 2 | gw.friends.steffann.nl 2a00:8642:1000:f000::1 | 2.2ms | 0%* | AS203993 | STEFFANN-DC-AS - S.J.M. Steffann, NL |
| 3 | 2a00:1ca8:1::194 | 3.3ms | 20% | AS50673 | Serverius-as - Serverius Holding B.V., NL |
| 4 | 2a03:3f40::10:41 | 2.8ms | 0% | AS50673 | Serverius-as - Serverius Holding B.V., NL |
| 5 | * | - | - | - | |
| 6 | * | - | 50% | - | |
| 7 | * | - | 20% | - | |
| 8 | 2001:978:3::a6 | 10.7ms | 0% | AS174 | COGENT-174 - Cogent Communications, LLC, US |
| 9 | 2001:41a8:20::60 | 18.4ms | 0% | AS6762 | SEABONE-NET - TELECOM ITALIA SPARKLE S.p.A., IT |
| 10 | 2001:41a8:20:2::566 | 18.8ms | 0% | AS6762 | SEABONE-NET - TELECOM ITALIA SPARKLE S.p.A., IT |
Rate-limited ICMPv6: hop 3, hop 6, hop 7 (loss between 5% and 95% across mtr cycles - the router replies but only sometimes).
tracepath -6
1?: [LOCALHOST] 0.040ms pmtu 1500
1: 2a00:8642:42::3 2.072ms
1: 2a00:8642:42::3 1.394ms
2: gw.friends.steffann.nl 2.651ms
3: 2a00:1ca8:1::194 3.337ms
4: 2a03:3f40::10:41 3.295ms
5: no reply
6: no reply
7: no reply
8: 2001:978:3::a6 10.928ms asymm 9
9: 2001:41a8:20::60 20.705ms asymm 10
10: 2001:41a8:20:2::566 21.249ms reached
Resume: pmtu 1500 hops 10 back 9 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 | - | AS204471 | KARSOLINK - 2S Computers SRL, IT |
| 3 | 2a12:d8c0:101f:103::1 | 8.5ms | 0% | AS204471 | KARSOLINK - 2S Computers SRL, IT |
| 4 | devitalia-v6.mix-it.net @MIX-IT / NAMEX / MINAP / TOP-IX / VSIX / EQUINIX-MILAN / BGPX-ROME / NAMEX-BARI / PCIX / DECIX-PALERMO 2001:7f8:b:100:1d1:a5d4:4747:104 | 9.9ms | 0% | - | NA |
tracepath -6
1?: [LOCALHOST] 0.031ms pmtu 1500
1: no reply
2: 2a12:d8c0:109f:121::a1 0.919ms
3: 2a12:d8c0:101f:103::1 8.843ms
4: devitalia-v6.mix-it.net 9.600ms reached
Resume: pmtu 1500 hops 4 back 4 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 | * | - | - | - | |
| 4 | e0-1.core1.lju1.he.net 2001:470:1:5be::1 | 1.8ms | 0% | AS6939 | HURRICANE - Hurricane Electric LLC, US |
| 5 | * | - | - | - | |
| 6 | * | - | 0% | - | |
| 7 | * | - | - | - | |
| 8 | devitalia-v6.mix-it.net @MIX-IT / NAMEX / MINAP / TOP-IX / VSIX / EQUINIX-MILAN / BGPX-ROME / NAMEX-BARI / PCIX / DECIX-PALERMO 2001:7f8:b:100:1d1:a5d4:4747:104 | 36.7ms | 0% | - | NA |
tracepath -6
1?: [LOCALHOST] 0.035ms pmtu 1500
1: fw1-lju.6connect.com 0.561ms
1: fw1-lju.6connect.com 0.486ms
2: no reply
3: no reply
4: e0-1.core1.lju1.he.net 2.811ms
5: no reply
6: port-channel1.core1.zag2.he.net 3.747ms
7: no reply
8: devitalia-v6.mix-it.net 10.700ms reached
Resume: pmtu 1500 hops 8 back 7