AS overview
Test target: 2a0b:93c0::1 · static prefix probe · address space: PA · prefixes announced: 1
prefix(es): 2a0b:93c0::/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 | ||
2a0b:93c0::1 | prb | ✓ | ✓ | ? | ? | ✓ | ✓ | ✓ | refused | refused | ✓ | ✓ | ✓ | refused | refused | ✓ |
RPKI & ASPA
1 of 1 prefix(es) covered by a valid ROA.
| Prefix | RPKI state | Reason | Covering VRP(s) |
|---|---|---|---|
2a0b:93c0::/29 | ✓ valid | matched VRP (correct origin, length within maxLength) | AS50201 /29 maxLen 29 (ripe) |
Random-IP probe (yarrp) into the AS' prefixes
At least one router inside AS50201's announced prefix replied during the random-target probe. Hop(s): 2a0b:93c0::1. 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 2026-05-30T12:46:51Z
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 | 1.8ms | 0%* | AS203993 | STEFFANN-DC-AS - S.J.M. Steffann, NL |
| 3 | 2a00:1ca8:1::194 | 3.2ms | 0% | AS50673 | Serverius-as - Serverius Holding B.V., NL |
| 4 | 2a03:3f40::10:41 | 2.2ms | 0% | AS50673 | Serverius-as - Serverius Holding B.V., NL |
| 5 | 2001:b28:3ff::1b1b:0:1 | 25.4ms | 10% | AS31500 | GNM-AS - Global Network Management Inc, AG |
| 6 | * | - | - | - | |
| 7 | be47.core4.fra1.he.net 2001:470:e:f::2 | 28.6ms | - | AS6939 | HURRICANE - Hurricane Electric LLC, US |
| 8 | be3.core2.fra2.he.net 2001:470:e:5a::1 | 31.5ms | 0% | AS6939 | HURRICANE - Hurricane Electric LLC, US |
| 9 | 2001:7f8:15e::23 | 29.4ms | 0% | - | NA |
| 10 | 2a0b:93c0::1 | 28.6ms | 0% | AS50201 | IMPULSO-AS - Impulso Srl, IT |
Rate-limited ICMPv6: hop 5 (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 1.361ms
1: 2a00:8642:42::3 1.527ms
2: gw.friends.steffann.nl 2.581ms
3: 2a00:1ca8:1::194 3.010ms
4: 2a03:3f40::10:41 2.813ms
5: 2001:b28:3ff::1b1b:0:1 27.615ms asymm 6
6: no reply
7: be47.core4.fra1.he.net 31.343ms asymm 5
8: be3.core2.fra2.he.net 28.176ms asymm 6
9: 2001:7f8:15e::23 29.280ms asymm 11
10: 2a0b:93c0::1 29.587ms reached
Resume: pmtu 1500 hops 10 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 | * | - | - | - | |
| 2 | 2a12:d8c0:109f:121::a1 | 0.4ms | - | AS204471 | KARSOLINK - 2S Computers SRL, IT |
| 3 | 2a12:d8c0:101f:6::1 | 9.9ms | 60% | AS204471 | KARSOLINK - 2S Computers SRL, IT |
| 4 | * | - | - | - | |
| 5 | * | - | - | - | |
| 6 | * | - | - | - | |
| 7 | * | - | - | - | |
| 8 | be3.core2.fra2.he.net 2001:470:e:5a::1 | 20.4ms | 0% | AS6939 | HURRICANE - Hurricane Electric LLC, US |
| 9 | 2001:7f8:15e::23 | 19.9ms | 0% | - | NA |
| 10 | 2a0b:93c0::1 | 20.1ms | 0% | AS50201 | IMPULSO-AS - Impulso 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] 0.032ms pmtu 1500
1: karsolink-01.net.karsolink.com 0.686ms
2: 2a12:d8c0:109f:121::a1 0.802ms
3: 2a12:d8c0:101f:6::1 10.274ms
4: no reply
5: no reply
6: no reply
7: be47.core4.fra1.he.net 20.991ms
8: be3.core2.fra2.he.net 21.188ms
9: 2001:7f8:15e::23 20.330ms asymm 11
10: 2a0b:93c0::1 20.603ms reached
Resume: pmtu 1500 hops 10 back 11 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 | 2a03:a100:0:201:1::1 | 0.9ms | 0% | AS56635 | XENYA - XENYA inzeniring, proizvodnja in trgovina, d.o.o. Ljubljana, SI |
| 4 | e0-1.core1.lju1.he.net 2001:470:1:5be::1 | 2.1ms | 10% | AS6939 | HURRICANE - Hurricane Electric LLC, US |
| 5 | 100ge0-0-0-5.core1.vie1.he.net 2001:470:0:578::1 | 7.0ms | 0% | AS6939 | HURRICANE - Hurricane Electric LLC, US |
| 6 | 100ge0-0-0-19.core2.fra2.he.net 2001:470:0:7ef::1 | 19.1ms | 0% | AS6939 | HURRICANE - Hurricane Electric LLC, US |
| 7 | 2001:7f8:15e::23 | 17.3ms | 0% | - | NA |
| 8 | 2a0b:93c0::1 | 17.2ms | 0% | AS50201 | IMPULSO-AS - Impulso 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] 0.029ms pmtu 1500
1: fw1-lju.6connect.com 0.654ms
1: fw1-lju.6connect.com 0.527ms
2: no reply
3: 2a03:a100:0:201:1::1 1.397ms
4: no reply
5: 100ge0-0-0-5.core1.vie1.he.net 9.298ms
6: 100ge0-0-0-19.core2.fra2.he.net 18.701ms asymm 7
7: 2001:7f8:15e::23 17.547ms
8: 2a0b:93c0::1 17.364ms reached
Resume: pmtu 1500 hops 8 back 10