AS overview
Test target: 2a10:7040:4::10 · ns1.connectlife.it · address space: unknown · prefixes announced: 1
prefix(es): 2a10:7040::/29
Targets & per-vantage-point probe results (6 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 | ||
2a10:7040:2::6ns2.connectlife.it | NS | ✓ | ✓ | ? | ? | - | ✓ | ✓ | ? | ? | - | ✓ | ✓ | ? | ? | - |
2a10:7040:2::60connectlife.it | drv | ✗ | ✗ | ? | ? | - | ✗ | ✗ | ? | ? | - | ✗ | ✗ | ? | ? | - |
2a10:7040:2::65monitor.connectlife.it | drv | ✓ | ✓ | ? | ? | - | ✓ | ✓ | refused | refused | - | ✓ | ✓ | refused | refused | - |
2a10:7040:2::67mta2.connectlife.it | MX | ✓ | ✓ | ? | ? | - | ✓ | ✓ | ? | ? | - | ✓ | ✓ | ? | ? | - |
2a10:7040:4::10ns1.connectlife.it | NS | ✗ | ✗ | ? | ? | - | ✗ | ✗ | ? | ? | - | ✗ | ✗ | ? | ? | - |
2a10:7040:4::9mta1.connectlife.it | MX | ✓ | ✓ | ? | ? | - | ✓ | ✓ | 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 2021-11-22. IPv6 LAN: 2001:7f8:b:100:1d1:a521:2602:163. Locations: -.
RPKI & ASPA
1 of 1 prefix(es) covered by a valid ROA.
| Prefix | RPKI state | Reason | Covering VRP(s) |
|---|---|---|---|
2a10:7040::/29 | ✓ valid | matched VRP (correct origin, length within maxLength) | AS212602 /29 maxLen 29 (ripe) |
Random-IP probe (yarrp) into the AS' prefixes
We probed 15 arbitrary IPv6 address(es) inside AS212602's announced prefix(es). No router inside the prefix responded. The deepest visible hop was 2001:7f8:c5::a521:2602:1 at hop 8 - that router does not answer ICMPv6 Echo. This is not in AS212602'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 active test inconclusive: no Echo Reply to 1300-byte probe.
method: ICMPv6 Echo + forged PTB, tested 2026-05-30T12:48:11Z
Failure detail — what to grep in your logs
| vantage | our source | your target | method | result | tested (UTC) |
|---|---|---|---|---|---|
| go6lab | 2a00:8642:42::75 | 2a10:7040:4::10 | icmp6-echo | no_echo | 2026-05-30T12:48:11Z |
| karsolink | 2a12:d8c0:105a:9001::a154 | 2a10:7040:4::10 | icmp6-echo | no_echo | 2026-05-30T12:57:52Z |
| odin | 2607:fae0:a000::42 | 2a10:7040:4::10 | icmp6-echo | no_echo | 2026-05-30T12:47:51Z |
Attempt log (go6lab):
icmp6-echo→ no_echo: no Echo Reply to 1300-byte probedns-tcp→ no_tcp: connect failed: [Errno 113] No route to hosttls→ 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 113] No route to hosttls→ 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 113] No route to hosttls→ 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) open
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 | 1.7ms | 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 | speed-ix.fibertelecom.it 2001:7f8:b7::a504:1327:1 | 3.2ms | 0% | - | NA |
| 4 | 2a03:b020::226 | 19.1ms | 0% | AS41327 | FIBERTELECOM-AS - Fiber Telecom S.p.A., IT |
| 5 | 2a03:b020:1:50::b | 19.4ms | 0% | AS41327 | FIBERTELECOM-AS - Fiber Telecom S.p.A., IT |
| 6 | GW-AS212602.retn.net 2a02:2d8:4:1809:232a::1 | 22.5ms | 0% | AS9002 | RETN-AS - RETN Limited, GB |
| 7 | fw1-pd.connectlife.it 2a10:7040:4::1 | 22.2ms | 0% | AS212602 | CONNECTLIFE - CONNECTLIFE SPA, IT |
| 8 | * | - | 0% | - | |
| 9 | * | - | - | - | |
| 10 | * | - | - | - | |
| 11 | * | - | - | - | |
| 12 | * | - | - | - | |
| 13 | * | - | - | - | |
| 14 | * | - | - | - | |
| 15 | * | - | - | - | |
| 16 | * | - | - | - | |
| 17 | * | - | - | - | |
| 18 | * | - | - | - | |
| 19 | * | - | - | - | |
| 20 | * | - | - | - | |
| 21 | * | - | - | - | |
| 22 | * | - | - | - | |
| 23 | * | - | - | - | |
| 24 | * | - | - | - |
tracepath -6
1?: [LOCALHOST] 0.036ms pmtu 1500
1: 2a00:8642:42::3 1.285ms
1: 2a00:8642:42::3 1.120ms
2: gw.friends.steffann.nl 2.074ms
3: speed-ix.fibertelecom.it 3.601ms
4: 2a03:b020::226 19.763ms
5: 2a03:b020:1:50::b 19.221ms asymm 9
6: GW-AS212602.retn.net 24.537ms asymm 10
7: fw1-pd.connectlife.it 22.993ms asymm 11
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 1500
Resume: pmtu 1500 From ITA host (Karsolink) open
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 | 0.4ms | 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 | 9.9ms | 10% | AS204471 | KARSOLINK - 2S Computers SRL, IT |
| 4 | connectlife.minap.it 2001:7f8:c5::a521:2602:1 | 10.5ms | 0% | AS212602 | ConnectLife s.r.l. |
| 5 | GW-AS212602.retn.net 2a02:2d8:4:1809:232a::1 | 19.1ms | 0% | AS9002 | RETN-AS - RETN Limited, GB |
| 6 | fw1-pd.connectlife.it 2a10:7040:4::1 | 13.5ms | 0% | AS212602 | CONNECTLIFE - CONNECTLIFE SPA, IT |
| 7 | * | - | 10% | - | |
| 8 | * | - | - | - | |
| 9 | * | - | - | - | |
| 10 | * | - | - | - | |
| 11 | * | - | - | - | |
| 12 | * | - | - | - | |
| 13 | * | - | - | - | |
| 14 | * | - | - | - | |
| 15 | * | - | - | - | |
| 16 | * | - | - | - | |
| 17 | * | - | - | - | |
| 18 | * | - | - | - | |
| 19 | * | - | - | - | |
| 20 | * | - | - | - | |
| 21 | * | - | - | - | |
| 22 | * | - | - | - | |
| 23 | * | - | - | - | |
| 24 | * | - | - | - |
Rate-limited ICMPv6: hop 3, hop 7 (loss between 5% and 95% across mtr cycles - the router replies but only sometimes).
tracepath -6
1?: [LOCALHOST] 0.027ms pmtu 1500
1: karsolink-01.net.karsolink.com 0.544ms
1: no reply
2: no reply
3: 2a12:d8c0:101f:6::1 10.349ms
4: connectlife.minap.it 10.895ms
5: gw-as212602.retn.net 14.566ms
6: fw1-pd.connectlife.it 14.213ms
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 1500
Resume: pmtu 1500 From SLO host (6connect) open
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 | 0.6ms | 50% | AS56635 | XENYA - XENYA inzeniring, proizvodnja in trgovina, d.o.o. Ljubljana, SI |
| 4 | * | - | 60% | - | |
| 5 | * | - | - | - | |
| 6 | port-channel1.core1.zag2.he.net 2001:470:0:2ea::2 | 3.9ms | 30% | AS6939 | HURRICANE - Hurricane Electric LLC, US |
| 7 | * | - | - | - | |
| 8 | connectlife-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:a521:2602:163 | 12.6ms | 0% | - | NA |
| 9 | connectlife.rom.namex.it 2001:7f8:10::21:2602 | 12.5ms | 0% | - | NA |
| 10 | GW-AS212602.retn.net 2a02:2d8:4:1809:232a::1 | 15.8ms | 0% | AS9002 | RETN-AS - RETN Limited, GB |
| 11 | fw1-pd.connectlife.it 2a10:7040:4::1 | 15.6ms | 0% | AS212602 | CONNECTLIFE - CONNECTLIFE SPA, IT |
| 12 | * | - | 20% | - | |
| 13 | * | - | - | - | |
| 14 | * | - | - | - | |
| 15 | * | - | - | - | |
| 16 | * | - | - | - | |
| 17 | * | - | - | - | |
| 18 | * | - | - | - | |
| 19 | * | - | - | - | |
| 20 | * | - | - | - | |
| 21 | * | - | - | - | |
| 22 | * | - | - | - | |
| 23 | * | - | - | - | |
| 24 | * | - | - | - |
Rate-limited ICMPv6: hop 3, hop 4, hop 6, hop 12 (loss between 5% and 95% across mtr cycles - the router replies but only sometimes).
tracepath -6
1?: [LOCALHOST] 0.028ms pmtu 1500
1: fw1-lju.6connect.com 0.653ms
1: fw1-lju.6connect.com 0.545ms
2: ccr-to-fw-ccr1-gw-lju.6connect.com 0.600ms
3: 2a03:a100:0:201:1::1 0.760ms
4: no reply
5: no reply
6: port-channel1.core1.zag2.he.net 4.802ms
7: no reply
8: connectlife.minap.it 12.657ms
9: connectlife.rom.namex.it 12.549ms asymm 8
10: GW-AS212602.retn.net 16.316ms asymm 9
11: fw1-pd.connectlife.it 15.725ms asymm 10
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 1500
Resume: pmtu 1500