AS overview
Test target: 2a05:9d40:dc1:d1::2 · ns1.spadhausen.com · address space: unknown · prefixes announced: 2
prefix(es): 2a05:9d40::/29, 2a05:9d40:8000::/48
Targets & per-vantage-point probe results (2 target(s) across 7 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 | SRB host (SOX, Belgrade) | DE host (Berlin) | DE host (Düsseldorf) | NL host (go6lab) | ITA host (Karsolink) | SLO host (6connect) | SLO host (T-2) | ||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ping | 1500B | :80 | :443 | reached | ping | 1500B | :80 | :443 | reached | ping | 1500B | :80 | :443 | reached | ping | 1500B | :80 | :443 | reached | ping | 1500B | :80 | :443 | reached | ping | 1500B | :80 | :443 | reached | ping | 1500B | :80 | :443 | reached | ||
2a05:9d40:dc1:d1::2ns1.spadhausen.com | drv | ✓ | ✓ | refused | refused | ✓ | ✓ | ✓ | refused | refused | ✓ | ✓ | ✓ | refused | refused | ✓ | ✓ | ✓ | ? | ? | ✓ | ✓ | ✓ | refused | refused | - | ✓ | ✓ | refused | refused | ✓ | ✓ | ✓ | refused | refused | ✓ |
2a05:9d40:dc2:d2::2ns2.spadhausen.com | drv | ✓ | ✓ | refused | refused | ✓ | ✓ | ✓ | refused | refused | ✓ | ✓ | ✓ | refused | refused | ✓ | ✓ | ✓ | ? | ? | ✓ | ✓ | ✓ | refused | refused | ✓ | ✓ | ✓ | 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 - Selective peering, peering member, since 2018-09-26. IPv6 LAN: 2001:7f8:b:100:1d1:a5d6:2166:36. Locations: -.
RPKI & ASPA
2 of 2 prefix(es) covered by a valid ROA.
| Prefix | RPKI state | Reason | Covering VRP(s) |
|---|---|---|---|
2a05:9d40::/29 | ✓ valid | matched VRP (correct origin, length within maxLength) | AS62166 /29 maxLen 29 (ripe) |
2a05:9d40:8000::/48 | ✓ valid | matched VRP (correct origin, length within maxLength) | AS62166 /48 maxLen 48 (ripe); AS62166 /29 maxLen 29 (ripe) |
Random-IP probe (yarrp) into the AS' prefixes
We probed 69 arbitrary IPv6 address(es) inside AS62166's announced prefix(es). No router inside the prefix responded. The deepest visible hop was 2a02:2d8::57f5:e080 at hop 7 - that router answers ICMPv6 Echo. This is not in AS62166'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 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 2026-09-23T12:04:34Z
Multi-vantage path map
Every hop of all vantages’ traceroutes toward the target, drawn left→right, grouped into per-AS bubbles (a hop seen from several vantages is one shared bubble, so converging paths merge). It answers two questions per vantage — shown on each source bubble as echo ✓/⚠/✗ · trace ✓/✗: did the destination reply to ICMPv6 Echo (✓ honored, ⚠ replied but PTB not honored, ✗ no reply), and did the traceroute reach it. A line to the target is drawn only when that vantage got an echo reply — solid if the PTB was honored, dashed if not (reachable but a broken-PMTUD / RFC 4890 violation). The path depth still shows how far the traceroute itself got, and runs of unanswered (* *) hops collapse into one dashed “silent” bubble. Open full size ↗
- ● SRB host (SOX, Belgrade)
- ● DE host (Berlin)
- ● DE host (Düsseldorf)
- ● NL host (go6lab)
- ● ITA host (Karsolink)
- ● SLO host (6connect)
- ● SLO host (T-2)
- ── solid line = echo reply, PTB honored (clean reach)
- — — dashed line = echo reply but PTB not honored (RFC 4890 violation)
- no line = no echo reply (never reached)
- ◉ target: green = clean, amber = reachable-but-violation / unreachable
- ⚠ suspected drop AS
- ⋯ silent (unanswered) hops
- ● IXP hop
From SRB host (SOX, Belgrade) openRFC 4890 ✓
filter likely at: (none) · min PMTU on path: 1500
4/4
Echo small (56B) 31.7ms
4/4
Echo 1500B (DF) 31.7ms
yes
Type 1 dest-unreach
443,80
TCP responds on
Path (traceroute + mtr + PTR)
| # | IP / PTR | RTT | mtr loss | AS | AS holder |
|---|---|---|---|---|---|
| 1 | 2a09:ab81::1 | 0.4ms | 0%* | AS60733 | PERKE-NET - ZORAN PEROVIC trading as Agencija Perke.NET, RS |
| 2 | 2001:7f8:1e::4 | 0.4ms | 0% | AS13004 | SOX - Serbian Open Exchange DOO, RS |
| 3 | 2001:7f8:30:0:2:1:0:9002 | 12.8ms | 0% | - | NA |
| 4 | RT.VSX.PDA.IT.retn.net 2a02:2d8::57f5:e07e | 32.7ms | 0% | AS9002 | RETN-AS - RETN Limited, GB |
| 5 | GW-SpadHausen.retn.net 2a02:2d8:4:180c:232a::1 | 29.6ms | 0% | AS9002 | RETN-AS - RETN Limited, GB |
| 6 | host-2a05-9d40-0000-0000-0000-0000-0016-0001.ip.spadhausen.com 2a05:9d40::16:1 | 29.8ms | 0% | AS62166 | SPADHAUSEN - Spadhausen SRL Unipersonale, IT |
| 7 | host-2a05-9d40-0000-0000-0000-0000-5020-0002.ip.spadhausen.com 2a05:9d40::5020:2 | 31.6ms | 0% | AS62166 | SPADHAUSEN - Spadhausen SRL Unipersonale, IT |
| 8 | host-2a05-9d40-0000-0000-0000-0000-5020-0002.ip.spadhausen.com 2a05:9d40::5020:2 | 31.5ms | 90% | AS62166 | SPADHAUSEN - Spadhausen SRL Unipersonale, IT |
| 9 | host-2a05-9d40-0000-0000-0000-0000-6010-0002.ip.spadhausen.com 2a05:9d40::6010:2 | 31.5ms | 0% | AS62166 | SPADHAUSEN - Spadhausen SRL Unipersonale, IT |
| 10 | ns1.spadhausen.com 2a05:9d40:dc1:d1::2 | 31.6ms | 0% | AS62166 | SPADHAUSEN - Spadhausen SRL Unipersonale, IT |
Rate-limited ICMPv6: hop 8 (loss between 5% and 95% across mtr cycles - the router replies but only sometimes).
tracepath -6
1?: [LOCALHOST] 0.011ms pmtu 1500
1: _gateway 0.416ms
1: _gateway 0.544ms
2: 2001:7f8:1e::4 0.898ms
3: 2001:7f8:30:0:2:1:0:9002 12.942ms
4: RT.VSX.PDA.IT.retn.net 20.884ms
5: GW-SpadHausen.retn.net 29.678ms asymm 6
6: host-2a05-9d40-0000-0000-0000-0000-0016-0001.ip.spadhausen.com 30.113ms asymm 7
7: host-2a05-9d40-0000-0000-0000-0000-5020-0002.ip.spadhausen.com 31.765ms asymm 9
8: host-2a05-9d40-0000-0000-0000-0000-5020-0002.ip.spadhausen.com 31.796ms asymm 9
9: host-2a05-9d40-0000-0000-0000-0000-6010-0002.ip.spadhausen.com 31.645ms asymm 10
10: ns1.spadhausen.com 31.745ms reached
Resume: pmtu 1500 hops 10 back 11 From DE host (Berlin) openRFC 4890 ✓
filter likely at: (none) · min PMTU on path: 1500
4/4
Echo small (56B) 25.7ms
4/4
Echo 1500B (DF) 25.7ms
yes
Type 1 dest-unreach
443,80
TCP responds on
Path (traceroute + mtr + PTR)
| # | IP / PTR | RTT | mtr loss | AS | AS holder |
|---|---|---|---|---|---|
| 1 | xe-0-0-13-178.gw01.ber01.as59645.net 2a06:d1c1:100:b::1 | 0.2ms | 0%* | AS59645 | WYBT-NET - Tobias Fiebig, DE |
| 2 | ae0-2453.cr10.ber01.lwlcom.net 2a06:d1c0::dead:beef:1c02 | 0.6ms | 0%* | AS59645 | WYBT-NET - Tobias Fiebig, DE |
| 3 | retn.bcix.de 2001:7f8:19:1::232a:1 | 10.2ms | 0% | - | NA |
| 4 | RT.MIX.MIL.IT.retn.net 2a02:2d8::57f5:e080 | 19.0ms | 0% | AS9002 | RETN-AS - RETN Limited, GB |
| 5 | GW-SpadHausen.retn.net 2a02:2d8:1:b804:232a::1 | 19.1ms | 0% | AS9002 | RETN-AS - RETN Limited, GB |
| 6 | host-2a05-9d40-0000-0000-0000-0000-0016-0002.ip.spadhausen.com 2a05:9d40::16:2 | 23.4ms | 0% | AS62166 | SPADHAUSEN - Spadhausen SRL Unipersonale, IT |
| 7 | host-2a05-9d40-0000-0000-0000-0000-0016-0001.ip.spadhausen.com 2a05:9d40::16:1 | 24.6ms | 0% | AS62166 | SPADHAUSEN - Spadhausen SRL Unipersonale, IT |
| 8 | host-2a05-9d40-0000-0000-0000-0000-5020-0002.ip.spadhausen.com 2a05:9d40::5020:2 | 25.5ms | 0% | AS62166 | SPADHAUSEN - Spadhausen SRL Unipersonale, IT |
| 9 | host-2a05-9d40-0000-0000-0000-0000-5020-0002.ip.spadhausen.com 2a05:9d40::5020:2 | 25.4ms | 0% | AS62166 | SPADHAUSEN - Spadhausen SRL Unipersonale, IT |
| 10 | host-2a05-9d40-0000-0000-0000-0000-6010-0002.ip.spadhausen.com 2a05:9d40::6010:2 | 25.4ms | 0% | AS62166 | SPADHAUSEN - Spadhausen SRL Unipersonale, IT |
| 11 | ns1.spadhausen.com 2a05:9d40:dc1:d1::2 | 25.4ms | 0% | AS62166 | SPADHAUSEN - Spadhausen SRL Unipersonale, IT |
tracepath -6
1?: [LOCALHOST] 0.029ms pmtu 1500
1: xe-0-0-13-178.gw01.ber01.as59645.net 0.425ms
1: xe-0-0-13-178.gw01.ber01.as59645.net 0.471ms
2: ae0-2453.cr10.ber01.lwlcom.net 0.883ms
3: retn.bcix.de 14.956ms asymm 5
4: RT.MIX.MIL.IT.retn.net 49.181ms asymm 5
5: GW-SpadHausen.retn.net 19.523ms asymm 11
6: host-2a05-9d40-0000-0000-0000-0000-0016-0002.ip.spadhausen.com 23.781ms asymm 12
7: host-2a05-9d40-0000-0000-0000-0000-0016-0001.ip.spadhausen.com 24.518ms asymm 13
8: host-2a05-9d40-0000-0000-0000-0000-5020-0002.ip.spadhausen.com 25.964ms asymm 15
9: host-2a05-9d40-0000-0000-0000-0000-5020-0002.ip.spadhausen.com 26.126ms asymm 15
10: host-2a05-9d40-0000-0000-0000-0000-6010-0002.ip.spadhausen.com 25.709ms asymm 16
11: ns1.spadhausen.com 26.301ms reached
Resume: pmtu 1500 hops 11 back 17 From DE host (Düsseldorf) openRFC 4890 ✓
filter likely at: (none) · min PMTU on path: 1500
4/4
Echo small (56B) 19.4ms
4/4
Echo 1500B (DF) 19.6ms
yes
Type 1 dest-unreach
443,80
TCP responds on
Path (traceroute + mtr + PTR)
| # | IP / PTR | RTT | mtr loss | AS | AS holder |
|---|---|---|---|---|---|
| 1 | xe-0-0-12-142.gw01.dus01.as59645.net 2a06:d1c1:100:d::1 | 0.3ms | 0%* | AS59645 | WYBT-NET - Tobias Fiebig, DE |
| 2 | eth1-0-12-h5594.edge5-dus1.bb.wiit.network 2001:4ba0:92f4:3::1 | 1.3ms | 0% | AS24961 | MYLOC-AS - WIIT AG, DE |
| 3 | * | - | - | - | |
| 4 | lag30.core3-dus1.bb.wiit.network 2001:4ba0:ffe9:109::2 | 0.2ms | 0% | AS24961 | MYLOC-AS - WIIT AG, DE |
| 5 | lag8.core1-dus-ix.bb.wiit.network 2001:4ba0:ffe9:8::2 | 0.4ms | 0% | AS24961 | MYLOC-AS - WIIT AG, DE |
| 6 | de-cix1.rt.act.fkt.de.retn.net 2001:7f8::232a:0:1 | 4.3ms | 0% | - | NA |
| 7 | RT.MIX.MIL.IT.retn.net 2a02:2d8::57f5:e080 | 18.0ms | 0% | AS9002 | RETN-AS - RETN Limited, GB |
| 8 | GW-SpadHausen.retn.net 2a02:2d8:1:b804:232a::1 | 12.8ms | 0% | AS9002 | RETN-AS - RETN Limited, GB |
| 9 | host-2a05-9d40-0000-0000-0000-0000-0016-0002.ip.spadhausen.com 2a05:9d40::16:2 | 17.1ms | 0% | AS62166 | SPADHAUSEN - Spadhausen SRL Unipersonale, IT |
| 10 | host-2a05-9d40-0000-0000-0000-0000-0016-0001.ip.spadhausen.com 2a05:9d40::16:1 | 17.4ms | 0% | AS62166 | SPADHAUSEN - Spadhausen SRL Unipersonale, IT |
| 11 | host-2a05-9d40-0000-0000-0000-0000-5020-0002.ip.spadhausen.com 2a05:9d40::5020:2 | 19.4ms | 0% | AS62166 | SPADHAUSEN - Spadhausen SRL Unipersonale, IT |
| 12 | host-2a05-9d40-0000-0000-0000-0000-5020-0002.ip.spadhausen.com 2a05:9d40::5020:2 | 19.3ms | 60% | AS62166 | SPADHAUSEN - Spadhausen SRL Unipersonale, IT |
| 13 | host-2a05-9d40-0000-0000-0000-0000-6010-0002.ip.spadhausen.com 2a05:9d40::6010:2 | 19.2ms | 0% | AS62166 | SPADHAUSEN - Spadhausen SRL Unipersonale, IT |
| 14 | ns1.spadhausen.com 2a05:9d40:dc1:d1::2 | 19.5ms | 0% | AS62166 | SPADHAUSEN - Spadhausen SRL Unipersonale, IT |
Rate-limited ICMPv6: hop 12 (loss between 5% and 95% across mtr cycles - the router replies but only sometimes).
tracepath -6
1?: [LOCALHOST] 0.025ms pmtu 1500
1: xe-0-0-12-142.gw01.dus01.as59645.net 0.378ms
1: xe-0-0-12-142.gw01.dus01.as59645.net 0.368ms
2: eth1-0-12-h5594.edge5-dus1.bb.wiit.network 1.516ms
3: no reply
4: lag30.core3-dus1.bb.wiit.network 0.407ms
5: lag2.core1-dus-ix.bb.wiit.network 0.632ms
6: de-cix1.rt.act.fkt.de.retn.net 4.467ms asymm 4
7: RT.MIX.MIL.IT.retn.net 13.029ms asymm 4
8: GW-SpadHausen.retn.net 12.807ms asymm 10
9: host-2a05-9d40-0000-0000-0000-0000-0016-0002.ip.spadhausen.com 17.512ms asymm 11
10: host-2a05-9d40-0000-0000-0000-0000-0016-0001.ip.spadhausen.com 17.521ms asymm 12
11: host-2a05-9d40-0000-0000-0000-0000-5020-0002.ip.spadhausen.com 19.519ms asymm 14
12: host-2a05-9d40-0000-0000-0000-0000-5020-0002.ip.spadhausen.com 19.530ms asymm 14
13: host-2a05-9d40-0000-0000-0000-0000-6010-0002.ip.spadhausen.com 19.503ms asymm 15
14: ns1.spadhausen.com 20.138ms reached
Resume: pmtu 1500 hops 14 back 16 From NL host (go6lab) openRFC 4890 ✓
filter likely at: (none) · min PMTU on path: 1500
4/4
Echo small (56B) 28.7ms
4/4
Echo 1500B (DF) 58.7ms
yes
Type 1 dest-unreach
-
TCP responds on
Path (traceroute + mtr + PTR)
| # | IP / PTR | RTT | mtr loss | AS | AS holder |
|---|---|---|---|---|---|
| 1 | 2a00:8642:42::2 | 4.0ms | 0% | AS203993 | GNA-DC1-AS - S.J.M. Steffann, NL |
| 2 | gw.friends.steffann.nl 2a00:8642:1000:f000::1 | 5.3ms | 0%* | AS203993 | GNA-DC1-AS - S.J.M. Steffann, NL |
| 3 | ccr2-ccr1.dc1.nogalliance.org 2a00:8642:dc1:2::b | 5.2ms | 0% | AS203993 | GNA-DC1-AS - S.J.M. Steffann, NL |
| 4 | ams-ix.retn.net 2001:7f8:1::a500:9002:1 | 5.5ms | 0% | - | NA |
| 5 | RT.MIX.MIL.IT.retn.net 2a02:2d8::57f5:e080 | 21.0ms | 0% | AS9002 | RETN-AS - RETN Limited, GB |
| 6 | GW-SpadHausen.retn.net 2a02:2d8:1:b804:232a::1 | 20.2ms | 0% | AS9002 | RETN-AS - RETN Limited, GB |
| 7 | host-2a05-9d40-0000-0000-0000-0000-0016-0002.ip.spadhausen.com 2a05:9d40::16:2 | 22.6ms | 0% | AS62166 | SPADHAUSEN - Spadhausen SRL Unipersonale, IT |
| 8 | host-2a05-9d40-0000-0000-0000-0000-0016-0001.ip.spadhausen.com 2a05:9d40::16:1 | 22.4ms | 0% | AS62166 | SPADHAUSEN - Spadhausen SRL Unipersonale, IT |
| 9 | host-2a05-9d40-0000-0000-0000-0000-5020-0002.ip.spadhausen.com 2a05:9d40::5020:2 | 24.9ms | 0% | AS62166 | SPADHAUSEN - Spadhausen SRL Unipersonale, IT |
| 10 | host-2a05-9d40-0000-0000-0000-0000-5020-0002.ip.spadhausen.com 2a05:9d40::5020:2 | 24.7ms | 80% | AS62166 | SPADHAUSEN - Spadhausen SRL Unipersonale, IT |
| 11 | host-2a05-9d40-0000-0000-0000-0000-6010-0002.ip.spadhausen.com 2a05:9d40::6010:2 | 24.6ms | 0% | AS62166 | SPADHAUSEN - Spadhausen SRL Unipersonale, IT |
| 12 | ns1.spadhausen.com 2a05:9d40:dc1:d1::2 | 25.2ms | 0% | AS62166 | SPADHAUSEN - Spadhausen SRL Unipersonale, IT |
Rate-limited ICMPv6: hop 10 (loss between 5% and 95% across mtr cycles - the router replies but only sometimes).
tracepath -6
1?: [LOCALHOST] 0.049ms pmtu 1500
1: 2a00:8642:42::2 3.041ms
1: 2a00:8642:42::2 5.355ms
2: gw.friends.steffann.nl 3.563ms
3: ccr2-ccr1.dc1.nogalliance.org 3.709ms asymm 2
4: ams-ix.retn.net 6.457ms asymm 7
5: RT.MIX.MIL.IT.retn.net 21.721ms asymm 6
6: GW-SpadHausen.retn.net 20.468ms asymm 7
7: host-2a05-9d40-0000-0000-0000-0000-0016-0002.ip.spadhausen.com 26.834ms
8: host-2a05-9d40-0000-0000-0000-0000-0016-0001.ip.spadhausen.com 24.499ms
9: host-2a05-9d40-0000-0000-0000-0000-5020-0002.ip.spadhausen.com 26.240ms asymm 10
10: host-2a05-9d40-0000-0000-0000-0000-5020-0002.ip.spadhausen.com 26.901ms
11: host-2a05-9d40-0000-0000-0000-0000-6010-0002.ip.spadhausen.com 26.790ms
12: ns1.spadhausen.com 26.072ms reached
Resume: pmtu 1500 hops 12 back 12 From ITA host (Karsolink) openRFC 4890 ✓
filter likely at: (none) · min PMTU on path: 1500
4/4
Echo small (56B) 12.1ms
3/4
Echo 1500B (DF) 12.3ms
yes
Type 1 dest-unreach
443,80
TCP responds on
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 | - | AS204471 | KARSOLINK - 2S Computers SRL, IT |
| 2 | 2a12:d8c0:109f:121::a1 | 0.3ms | 0%* | AS204471 | KARSOLINK - 2S Computers SRL, IT |
| 3 | 2a12:d8c0:109f:106::a2 | 3.2ms | 0% | AS204471 | KARSOLINK - 2S Computers SRL, IT |
| 4 | 2001:7f8:5f:ffff::68 | 30.6ms | 0% | - | NA |
| 5 | host-2a05-9d40-0000-0000-0000-0000-0016-0001.ip.spadhausen.com 2a05:9d40::16:1 | 10.0ms | 0% | AS62166 | SPADHAUSEN - Spadhausen SRL Unipersonale, IT |
| 6 | host-2a05-9d40-0000-0000-0000-0000-0016-0001.ip.spadhausen.com 2a05:9d40::16:1 | 14.3ms | 0% | AS62166 | SPADHAUSEN - Spadhausen SRL Unipersonale, IT |
| 7 | host-2a05-9d40-0000-0000-0000-0000-5020-0002.ip.spadhausen.com 2a05:9d40::5020:2 | 12.0ms | 0% | AS62166 | SPADHAUSEN - Spadhausen SRL Unipersonale, IT |
| 8 | host-2a05-9d40-0000-0000-0000-0000-6010-0002.ip.spadhausen.com 2a05:9d40::6010:2 | 11.9ms | 0% | AS62166 | SPADHAUSEN - Spadhausen SRL Unipersonale, IT |
| 9 | host-2a05-9d40-0000-0000-0000-0000-6010-0002.ip.spadhausen.com 2a05:9d40::6010:2 | 16.3ms | 0% | AS62166 | SPADHAUSEN - Spadhausen SRL Unipersonale, IT |
tracepath -6
1?: [LOCALHOST] 0.037ms pmtu 1500
1: karsolink-01.net.karsolink.com 0.762ms
1: karsolink-01.net.karsolink.com 1.009ms
2: 2a12:d8c0:109f:121::a1 0.797ms
3: 2a12:d8c0:109f:106::a2 3.654ms
4: 2001:7f8:5f:ffff::68 10.362ms asymm 6
5: host-2a05-9d40-0000-0000-0000-0000-0016-0001.ip.spadhausen.com 10.414ms asymm 7
6: host-2a05-9d40-0000-0000-0000-0000-0016-0001.ip.spadhausen.com 19.039ms asymm 7
7: host-2a05-9d40-0000-0000-0000-0000-5020-0002.ip.spadhausen.com 12.539ms asymm 10
8: host-2a05-9d40-0000-0000-0000-0000-6010-0002.ip.spadhausen.com 12.204ms asymm 11
9: ns1.spadhausen.com 12.965ms reached
Resume: pmtu 1500 hops 9 back 12 From SLO host (6connect) openRFC 4890 ✓
filter likely at: (none) · min PMTU on path: 1500
4/4
Echo small (56B) 22.6ms
3/4
Echo 1500B (DF) 22.7ms
yes
Type 1 dest-unreach
443,80
TCP responds on
Path (traceroute + mtr + PTR)
| # | IP / PTR | RTT | mtr loss | AS | AS holder |
|---|---|---|---|---|---|
| 1 | fw1-lju.6connect.com 2607:fae0:a000::2 | 0.5ms | 0%* | AS8038 | 6CONNECT - 6connect, Inc., US |
| 2 | ccr-to-fw-ccr1-gw-lju.6connect.com 2607:fae0:a000:2::2 | 0.6ms | - | AS8038 | 6CONNECT - 6connect, Inc., US |
| 3 | * | - | 0% | - | |
| 4 | 2a00:ee0:1:10::2 | 1.2ms | 0% | AS5603 | SIOL-NET - Telekom Slovenije, d.d., SI |
| 5 | de-cix1.rt.act.fkt.de.retn.net 2001:7f8::232a:0:1 | 13.9ms | 0% | - | NA |
| 6 | RT.MIX.MIL.IT.retn.net 2a02:2d8::57f5:e080 | 15.8ms | 0% | AS9002 | RETN-AS - RETN Limited, GB |
| 7 | GW-SpadHausen.retn.net 2a02:2d8:1:b804:232a::1 | 14.1ms | 0% | AS9002 | RETN-AS - RETN Limited, GB |
| 8 | host-2a05-9d40-0000-0000-0000-0000-0016-0002.ip.spadhausen.com 2a05:9d40::16:2 | 20.3ms | 0% | AS62166 | SPADHAUSEN - Spadhausen SRL Unipersonale, IT |
| 9 | host-2a05-9d40-0000-0000-0000-0000-0016-0001.ip.spadhausen.com 2a05:9d40::16:1 | 20.3ms | 0% | AS62166 | SPADHAUSEN - Spadhausen SRL Unipersonale, IT |
| 10 | host-2a05-9d40-0000-0000-0000-0000-5020-0002.ip.spadhausen.com 2a05:9d40::5020:2 | 22.6ms | 0% | AS62166 | SPADHAUSEN - Spadhausen SRL Unipersonale, IT |
| 11 | host-2a05-9d40-0000-0000-0000-0000-5020-0002.ip.spadhausen.com 2a05:9d40::5020:2 | 22.9ms | 80% | AS62166 | SPADHAUSEN - Spadhausen SRL Unipersonale, IT |
| 12 | host-2a05-9d40-0000-0000-0000-0000-6010-0002.ip.spadhausen.com 2a05:9d40::6010:2 | 22.9ms | 0% | AS62166 | SPADHAUSEN - Spadhausen SRL Unipersonale, IT |
| 13 | ns1.spadhausen.com 2a05:9d40:dc1:d1::2 | 22.5ms | 0% | AS62166 | SPADHAUSEN - Spadhausen SRL Unipersonale, IT |
Rate-limited ICMPv6: hop 11 (loss between 5% and 95% across mtr cycles - the router replies but only sometimes).
tracepath -6
1?: [LOCALHOST] 0.029ms pmtu 9000
1: fw1-lju.6connect.com 0.621ms
1: fw1-lju.6connect.com 0.478ms
2: no reply
3: 2a00:ee1:800:9::1 2.075ms
4: 2a00:ee0:1:15::2 1.596ms asymm 3
5: 2a00:ee0:1:15::2 1.576ms pmtu 1500
5: de-cix1.rt.act.fkt.de.retn.net 14.136ms asymm 9
6: RT.MIX.MIL.IT.retn.net 16.630ms asymm 8
7: GW-SpadHausen.retn.net 24.282ms asymm 12
8: host-2a05-9d40-0000-0000-0000-0000-0016-0002.ip.spadhausen.com 20.531ms
9: host-2a05-9d40-0000-0000-0000-0000-0016-0001.ip.spadhausen.com 20.800ms
10: host-2a05-9d40-0000-0000-0000-0000-5020-0002.ip.spadhausen.com 22.823ms asymm 12
11: host-2a05-9d40-0000-0000-0000-0000-5020-0002.ip.spadhausen.com 23.082ms asymm 12
12: host-2a05-9d40-0000-0000-0000-0000-6010-0002.ip.spadhausen.com 22.797ms asymm 13
13: ns1.spadhausen.com 22.791ms reached
Resume: pmtu 1500 hops 13 back 14 From SLO host (T-2) openRFC 4890 ✓
filter likely at: (none) · min PMTU on path: 1500
4/4
Echo small (56B) 22.0ms
4/4
Echo 1500B (DF) 22.2ms
yes
Type 1 dest-unreach
443,80
TCP responds on
Path (traceroute + mtr + PTR)
| # | IP / PTR | RTT | mtr loss | AS | AS holder |
|---|---|---|---|---|---|
| 1 | * | - | 0%* | - | |
| 2 | 2a01:260:1::225 | 5.4ms | 0%* | AS34779 | T-2-AS - T-2, d.o.o., SI |
| 3 | 2a01-260-1-1--9a.core6.t-2.net 2a01:260:1:1::9a | 2.4ms | 0%* | AS34779 | T-2-AS - T-2, d.o.o., SI |
| 4 | 2a01-260-1-1--25.core6.t-2.net 2a01:260:1:1::25 | 4.9ms | 0%* | AS34779 | T-2-AS - T-2, d.o.o., SI |
| 5 | 2a01-260-1-1--c.core6.t-2.net 2a01:260:1:1::c | 4.8ms | 0%* | AS34779 | T-2-AS - T-2, d.o.o., SI |
| 6 | RT.VSX.PDA.IT.retn.net 2a02:2d8::57f5:e07e | 16.1ms | 0% | AS9002 | RETN-AS - RETN Limited, GB |
| 7 | GW-SpadHausen.retn.net 2a02:2d8:4:180c:232a::1 | 20.7ms | 0% | AS9002 | RETN-AS - RETN Limited, GB |
| 8 | GW-SpadHausen.retn.net 2a02:2d8:4:180c:232a::1 | 20.6ms | 0% | AS9002 | RETN-AS - RETN Limited, GB |
| 9 | host-2a05-9d40-0000-0000-0000-0000-0016-0001.ip.spadhausen.com 2a05:9d40::16:1 | 20.1ms | 0% | AS62166 | SPADHAUSEN - Spadhausen SRL Unipersonale, IT |
| 10 | host-2a05-9d40-0000-0000-0000-0000-5020-0002.ip.spadhausen.com 2a05:9d40::5020:2 | 23.0ms | 0% | AS62166 | SPADHAUSEN - Spadhausen SRL Unipersonale, IT |
| 11 | host-2a05-9d40-0000-0000-0000-0000-6010-0002.ip.spadhausen.com 2a05:9d40::6010:2 | 22.5ms | 0% | AS62166 | SPADHAUSEN - Spadhausen SRL Unipersonale, IT |
| 12 | host-2a05-9d40-0000-0000-0000-0000-6010-0002.ip.spadhausen.com 2a05:9d40::6010:2 | 22.7ms | 0% | AS62166 | SPADHAUSEN - Spadhausen SRL Unipersonale, IT |
| 13 | ns1.spadhausen.com 2a05:9d40:dc1:d1::2 | 22.6ms | 0% | AS62166 | SPADHAUSEN - Spadhausen SRL Unipersonale, IT |
tracepath -6
1?: [LOCALHOST] 0.016ms pmtu 1500
1: no reply
2: 2a01:260:1::225 10.081ms
3: 2a01-260-1-1--9c.core6.t-2.net 2.004ms
4: 2a01-260-1-1--c.core6.t-2.net 5.400ms
5: 2001:7f8:30:0:2:1:0:9002 14.975ms
6: 2001:7f8:30:0:2:1:0:9002 7.835ms asymm 5
7: GW-SpadHausen.retn.net 20.580ms
8: host-2a05-9d40-0000-0000-0000-0000-0016-0001.ip.spadhausen.com 20.715ms
9: host-2a05-9d40-0000-0000-0000-0000-5020-0002.ip.spadhausen.com 23.081ms asymm 11
10: host-2a05-9d40-0000-0000-0000-0000-5020-0002.ip.spadhausen.com 22.630ms asymm 11
11: host-2a05-9d40-0000-0000-0000-0000-5020-0002.ip.spadhausen.com 22.914ms
12: host-2a05-9d40-0000-0000-0000-0000-6010-0002.ip.spadhausen.com 24.102ms
13: ns1.spadhausen.com 24.521ms reached
Resume: pmtu 1500 hops 13 back 13