AS overview
Test target: 2a14:7584:6000::1 · (no live host found) · address space: unknown · prefixes announced: 2
prefix(es): 2a14:7584:6000::/36, 2a0d:b287:da01::/48
RPKI & ASPA
2 of 2 prefix(es) covered by a valid ROA.
| Prefix | RPKI state | Reason | Covering VRP(s) |
|---|---|---|---|
2a14:7584:6000::/36 | ✓ valid | matched VRP (correct origin, length within maxLength) | AS212539 /36 maxLen 36 (ripe); AS212539 /36 maxLen 48 (ripe) |
2a0d:b287:da01::/48 | ✓ valid | matched VRP (correct origin, length within maxLength) | AS212539 /48 maxLen 48 (ripe); AS41720 /29 maxLen 29 (ripe) |
ASPA: this AS has published an ASPA record listing 1 upstream provider(s) that are authorized to propagate routes from it: AS208437. Routes from this AS that arrive via any other upstream are considered ASPA-invalid by validators that enforce ASPA.
Random-IP probe (yarrp) into the AS' prefixes
At least one router inside AS212539's announced prefix replied during the random-target probe. Hop(s): 2a14:7584:6000::. These are candidate targets for direct testing.
ICMPv6 Type 2 (Packet Too Big) acceptance - active test
Type 2 active test inconclusive: no Echo Reply to 1300-byte probe.
method: ICMPv6 Echo + forged PTB, tested 2026-05-25T12:39:01Z
Failure detail — what to grep in your logs
| vantage | our source | your target | method | result | tested (UTC) |
|---|---|---|---|---|---|
| go6lab | 2a00:8642:42::75 | 2a14:7584:6000::1 | icmp6-echo | no_echo | 2026-05-25T12:39:01Z |
| karsolink | 2a12:d8c0:105a:9001::a154 | 2a14:7584:6000::1 | icmp6-echo | no_echo | 2026-05-25T12:51:22Z |
| odin | 2607:fae0:a000::42 | 2a14:7584:6000::1 | icmp6-echo | no_echo | 2026-05-25T12:38:30Z |
Attempt log (go6lab):
icmp6-echo→ no_echo: no Echo Reply to 1300-byte probedns-tcp→ no_tcp: connect failed: timed outtls→ no_tcp: TLS connect failedhttp→ no_tcp: tcp/80 not open
Attempt log (karsolink):
icmp6-echo→ no_echo: no Echo Reply to 1300-byte probedns-tcp→ no_tcp: connect failed: [Errno 101] Network is unreachabletls→ no_tcp: TLS connect failedhttp→ no_tcp: tcp/80 not open
Attempt log (odin):
icmp6-echo→ no_echo: no Echo Reply to 1300-byte probedns-tcp→ no_tcp: connect failed: [Errno 101] Network is unreachabletls→ no_tcp: TLS connect failedhttp→ no_tcp: tcp/80 not open
To match the corresponding ICMPv6 packet on your side (host firewall, AS edge, or transit tap), look for our PTBs around the timestamps above:
sudo tcpdump -i any -n -e 'icmp6 and ip6[40] = 2 and (src host 2607:fae0:a000::42 or src host 2a00:8642:42::75 or src host 2a12:d8c0:105a:9001::a154)'
If you see our PTBs arriving but the destination's TCP/Echo flow does not shrink, the drop is in the destination kernel (cause 3 below). If you don't see them at all, drop is upstream of you (cause 2). If you only see them from one of our two source IPs, the drop is path-asymmetric — one transit on the asymmetric route is filtering, the other is not.
From NL host (go6lab) transit only unreachable
filter likely at: no path · min PMTU on path: 1492
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 | 2a00:1ca8:1::194 | 3.1ms | 0% | AS50673 | Serverius-as - Serverius Holding B.V., NL |
| 4 | 2a03:3f40::10:41 | 2.9ms | 0% | AS50673 | Serverius-as - Serverius Holding B.V., NL |
| 5 | 2001:b28:3ff::1b1b:0:1 | 26.7ms | 10% | AS31500 | GNM-AS - Global Network Management Inc, AG |
| 6 | be2.core1.cph1.he.net 2001:470:e:5f::1 | 27.2ms | - | AS6939 | HURRICANE - Hurricane Electric LLC, US |
| 7 | * | - | - | - | |
| 8 | * | - | - | - | |
| 9 | hyperbit.minap.it 2001:7f8:c5::a520:8437:1 | 36.8ms | 0% | AS208437 | HyperBit s.r.l.s. |
| 10 | 2a0d:b287:dad2:4 | 44.7ms | 0% | - | |
| 11 | * | - | - | - | |
| 12 | * | - | - | - | |
| 13 | * | - | - | - | |
| 14 | * | - | - | - | |
| 15 | * | - | - | - | |
| 16 | * | - | - | - | |
| 17 | * | - | - | - | |
| 18 | * | - | - | - | |
| 19 | * | - | - | - | |
| 20 | * | - | - | - | |
| 21 | * | - | - | - | |
| 22 | * | - | - | - | |
| 23 | * | - | - | - | |
| 24 | * | - | - | - |
Rate-limited ICMPv6: hop 5 (loss between 5% and 95% across mtr cycles - the router replies but only sometimes).
tracepath -6
1?: [LOCALHOST] 0.041ms pmtu 1492
1: 2a00:8642:42::3 2.084ms
1: 2a00:8642:42::3 1.455ms
2: gw.friends.steffann.nl 2.633ms
3: 2a00:1ca8:1::194 3.166ms
4: 2a03:3f40::10:41 3.051ms
5: 2001:b28:3ff::1b1b:0:1 26.042ms asymm 6
6: be2.core1.cph1.he.net 26.411ms asymm 5
7: no reply
8: no reply
9: hyperbit.minap.it 36.378ms
10: 2a0d:b287:dad2:4:: 44.324ms
11: no reply
12: no reply
13: no reply
14: no reply
15: no reply
16: no reply
17: no reply
18: no reply
19: no reply
20: no reply
21: no reply
22: no reply
23: no reply
24: no reply
Too many hops: pmtu 1492
Resume: pmtu 1492 From ITA host (Karsolink) transit only unreachable
filter likely at: no path · min PMTU on path: 1492
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 | * | - | 0%* | - | |
| 3 | 2a12:d8c0:101f:6::1 | 10.0ms | 10% | AS204471 | KARSOLINK - 2S Computers SRL, IT |
| 4 | hyperbit.minap.it 2001:7f8:c5::a520:8437:1 | 9.9ms | 0% | AS208437 | HyperBit s.r.l.s. |
| 5 | 2a14:7584:6000 | 18.1ms | 10% | - | |
| 6 | * | - | - | - | |
| 7 | * | - | - | - | |
| 8 | * | - | - | - | |
| 9 | * | - | - | - | |
| 10 | * | - | - | - | |
| 11 | * | - | - | - | |
| 12 | * | - | - | - | |
| 13 | * | - | - | - | |
| 14 | * | - | - | - | |
| 15 | * | - | - | - | |
| 16 | * | - | - | - | |
| 17 | * | - | - | - | |
| 18 | * | - | - | - | |
| 19 | * | - | - | - | |
| 20 | * | - | - | - | |
| 21 | * | - | - | - | |
| 22 | * | - | - | - | |
| 23 | * | - | - | - | |
| 24 | * | - | - | - |
Rate-limited ICMPv6: hop 3, hop 5 (loss between 5% and 95% across mtr cycles - the router replies but only sometimes).
tracepath -6
1?: [LOCALHOST] 0.030ms pmtu 1500
1: no reply
2: 2a12:d8c0:109f:121::a1 0.994ms
3: 2a12:d8c0:101f:6::1 10.564ms
4: hyperbit.minap.it 10.603ms
5: hyperbit.minap.it 10.654ms pmtu 1492
5: 2a14:7584:6000:: 18.456ms
6: no reply
7: no reply
8: no reply
9: no reply
10: no reply
11: no reply
12: no reply
13: no reply
14: no reply
15: no reply
16: no reply
17: no reply
18: no reply
19: no reply
20: no reply
21: no reply
22: no reply
23: no reply
24: no reply
Too many hops: pmtu 1492
Resume: pmtu 1492 From SLO host (6connect) transit only unreachable
filter likely at: no path · min PMTU on path: 1492
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 | * | - | 0% | - | |
| 4 | * | - | 0% | - | |
| 5 | * | - | - | - | |
| 6 | * | - | 0% | - | |
| 7 | * | - | - | - | |
| 8 | hyperbit.minap.it 2001:7f8:c5::a520:8437:1 | 12.3ms | 0% | AS208437 | HyperBit s.r.l.s. |
| 9 | 2a14:7584:6000 | 19.9ms | 0% | - | |
| 10 | * | - | - | - | |
| 11 | * | - | - | - | |
| 12 | * | - | - | - | |
| 13 | * | - | - | - | |
| 14 | * | - | - | - | |
| 15 | * | - | - | - | |
| 16 | * | - | - | - | |
| 17 | * | - | - | - | |
| 18 | * | - | - | - | |
| 19 | * | - | - | - | |
| 20 | * | - | - | - | |
| 21 | * | - | - | - | |
| 22 | * | - | - | - | |
| 23 | * | - | - | - | |
| 24 | * | - | - | - |
tracepath -6
1?: [LOCALHOST] 0.027ms pmtu 1500
1: fw1-lju.6connect.com 0.477ms
1: fw1-lju.6connect.com 0.629ms
2: no reply
3: 2a03:a100:0:201:1::1 1.219ms
4: e0-1.core1.lju1.he.net 2.180ms
5: no reply
6: port-channel1.core1.zag2.he.net 4.239ms
7: no reply
8: hyperbit.minap.it 12.462ms
9: hyperbit.minap.it 12.383ms pmtu 1492
9: 2a14:7584:6000:: 19.172ms
10: no reply
11: no reply
12: no reply
13: no reply
14: no reply
15: no reply
16: no reply
17: no reply
18: no reply
19: no reply
20: no reply
21: no reply
22: no reply
23: no reply
24: no reply
Too many hops: pmtu 1492