AS overview
Test target: 2a06:9f42::1 · static prefix probe · address space: mixed · prefixes announced: 6
prefix(es): 2a0a:6046::/32, 2a0a:6046:fe00::/40, 2a0d:b287:ee00::/40, 2a0d:b287:ec00::/40, 2a0a:6046:ff00::/40, 2a06:9f42::/32
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 | ||
2a06:9f42::1 | prb | ✓ | ✓ | ? | ? | ✓ | ✓ | ✓ | refused | refused | ✓ | ✓ | ✓ | refused | refused | ✓ |
RPKI & ASPA
6 of 6 prefix(es) covered by a valid ROA.
| Prefix | RPKI state | Reason | Covering VRP(s) |
|---|---|---|---|
2a0a:6046::/32 | ✓ valid | matched VRP (correct origin, length within maxLength) | AS208328 /32 maxLen 48 (ripe) |
2a0a:6046:fe00::/40 | ✓ valid | matched VRP (correct origin, length within maxLength) | AS208328 /32 maxLen 48 (ripe) |
2a0d:b287:ee00::/40 | ✓ valid | matched VRP (correct origin, length within maxLength) | AS208328 /40 maxLen 40 (ripe); AS41720 /29 maxLen 29 (ripe) |
2a0d:b287:ec00::/40 | ✓ valid | matched VRP (correct origin, length within maxLength) | AS208328 /40 maxLen 40 (ripe); AS41720 /29 maxLen 29 (ripe) |
2a0a:6046:ff00::/40 | ✓ valid | matched VRP (correct origin, length within maxLength) | AS208328 /32 maxLen 48 (ripe) |
2a06:9f42::/32 | ✓ valid | matched VRP (correct origin, length within maxLength) | AS208328 /32 maxLen 48 (ripe) |
Random-IP probe (yarrp) into the AS' prefixes
At least one router inside AS208328's announced prefix replied during the random-target probe. Hop(s): 2a06:9f42::1, 2a0a:6046:ffe0::. 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 2026-05-30T12:45:48Z
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 | 0.7ms | 0% | AS203993 | STEFFANN-DC-AS - S.J.M. Steffann, NL |
| 2 | gw.friends.steffann.nl 2a00:8642:1000:f000::1 | 1.8ms | 0%* | AS203993 | STEFFANN-DC-AS - S.J.M. Steffann, NL |
| 3 | 2a00:1ca8:1::194 | 2.5ms | 20% | AS50673 | Serverius-as - Serverius Holding B.V., NL |
| 4 | 2a03:3f40::10:41 | 2.4ms | 0% | AS50673 | Serverius-as - Serverius Holding B.V., NL |
| 5 | 2001:978:2:40::3:1 | 4.0ms | - | AS174 | COGENT-174 - Cogent Communications, LLC, US |
| 6 | * | - | - | - | |
| 7 | 2001:978:3::26 | 4.2ms | 0% | AS174 | COGENT-174 - Cogent Communications, LLC, US |
| 8 | 2001:2034:a:17a | 3.6ms | 0% | - | |
| 9 | * | - | - | - | |
| 10 | 2a06:9f42::1 | 28.7ms | 0% | AS208328 | L2N - Luigi Labate, IT |
Rate-limited ICMPv6: hop 3 (loss between 5% and 95% across mtr cycles - the router replies but only sometimes).
tracepath -6
1?: [LOCALHOST] 0.054ms pmtu 1500
1: 2a00:8642:42::3 1.755ms
1: 2a00:8642:42::3 1.710ms
2: gw.friends.steffann.nl 2.738ms
3: 2a00:1ca8:1::194 3.441ms
4: 2a03:3f40::10:41 3.139ms
5: 2001:978:2:40::3:1 5.141ms
6: no reply
7: 2001:978:3::ca 4.352ms asymm 6
8: adm-bb1-link.ip.twelve99.net 4.103ms asymm 7
9: no reply
10: mno-b3-link.ip.twelve99.net 29.651ms asymm 9
11: 2a06:9f42::1 31.000ms reached
Resume: pmtu 1500 hops 11 back 11 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 | karsolink-01.net.karsolink.com 2a12:d8c0:105a:9001::1 | 0.3ms | 0%* | AS204471 | KARSOLINK - 2S Computers SRL, IT |
| 2 | 2a12:d8c0:109f:121::a1 | 0.4ms | 0%* | AS204471 | KARSOLINK - 2S Computers SRL, IT |
| 3 | 2a12:d8c0:101f:6::1 | 9.8ms | 0% | AS204471 | KARSOLINK - 2S Computers SRL, IT |
| 4 | 2a03:b020:1:51::a | 10.0ms | 0% | AS41327 | FIBERTELECOM-AS - Fiber Telecom S.p.A., IT |
| 5 | 2a03:b020::225 | 10.2ms | 0% | AS41327 | FIBERTELECOM-AS - Fiber Telecom S.p.A., IT |
| 6 | mno-b3-link.ip.twelve99.net 2001:2035:0:19e1::1 | 10.5ms | 0% | AS1299 | TWELVE99 - Arelion Sweden AB, SE |
| 7 | 2a06:9f42::1 | 8.4ms | 0% | AS208328 | L2N - Luigi Labate, IT |
tracepath -6
1?: [LOCALHOST] 0.041ms pmtu 1500
1: no reply
2: 2a12:d8c0:109f:121::a1 0.866ms
3: 2a12:d8c0:101f:6::1 10.432ms
4: 2a03:b020:1:51::a 10.979ms
5: 2a03:b020::225 10.924ms asymm 6
6: mno-b3-link.ip.twelve99.net 11.041ms asymm 7
7: 2a06:9f42::1 9.056ms reached
Resume: pmtu 1500 hops 7 back 7 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 | * | - | 0%* | - | |
| 3 | 2a03:a100:0:201:1::1 | 0.8ms | 10% | AS56635 | XENYA - XENYA inzeniring, proizvodnja in trgovina, d.o.o. Ljubljana, SI |
| 4 | e0-1.core1.lju1.he.net 2001:470:1:5be::1 | 2.0ms | 10% | AS6939 | HURRICANE - Hurricane Electric LLC, US |
| 5 | 100ge0-0-0-5.core1.vie1.he.net 2001:470:0:578::1 | 8.6ms | 0% | AS6939 | HURRICANE - Hurricane Electric LLC, US |
| 6 | 100ge0-0-0-19.core2.fra2.he.net 2001:470:0:7ef::1 | 19.6ms | 0% | AS6939 | HURRICANE - Hurricane Electric LLC, US |
| 7 | be3.core4.fra1.he.net 2001:470:e:5a::2 | 18.8ms | 0% | AS6939 | HURRICANE - Hurricane Electric LLC, US |
| 8 | ffm-b14-link.ip.twelve99.net 2001:2035:0:26bf::1 | 18.6ms | 0% | AS1299 | TWELVE99 - Arelion Sweden AB, SE |
| 9 | 2001:2034:a:21a | 18.3ms | 0% | - | |
| 10 | mno-b3-link.ip.twelve99.net 2001:2034:a:36c::1 | 26.4ms | 0% | AS1299 | TWELVE99 - Arelion Sweden AB, SE |
| 11 | 2a06:9f42::1 | 26.0ms | - | AS208328 | L2N - Luigi Labate, IT |
Rate-limited ICMPv6: hop 3, hop 4 (loss between 5% and 95% across mtr cycles - the router replies but only sometimes).
tracepath -6
1?: [LOCALHOST] 0.035ms pmtu 1500
1: fw1-lju.6connect.com 0.571ms
1: fw1-lju.6connect.com 0.398ms
2: ccr-to-fw-ccr1-gw-lju.6connect.com 0.885ms
3: 2a03:a100:0:201:1::1 1.576ms
4: e0-1.core1.lju1.he.net 1.948ms
5: 100ge0-0-0-5.core1.vie1.he.net 8.170ms
6: 100ge0-0-0-19.core2.fra2.he.net 19.677ms asymm 7
7: be3.core4.fra1.he.net 19.886ms asymm 8
8: ffm-b14-link.ip.twelve99.net 20.307ms asymm 11
9: ffm-bb1-link.ip.twelve99.net 21.765ms asymm 11
10: mno-b3-link.ip.twelve99.net 39.397ms asymm 12
11: 2a06:9f42::1 26.257ms reached
Resume: pmtu 1500 hops 11 back 13