AS overview
Test target: 2a01:65c0::1 · static prefix probe · address space: mixed · prefixes announced: 6
prefix(es): 2a01:65c0:e01::/48, 2a01:65c0:200::/40, 2a01:65c0::/32, 2a01:65c0:101::/48, 2a01:65c0:100::/48, 2a01:65c0:e00::/48
Targets & per-vantage-point probe results (1 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 | ||
2a01:65c0::1 | prb | ✓ | ✓ | 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 - Open peering, peering member, since 2020-05-20. IPv6 LAN: 2001:7f8:b:100:1d1:a5d0:3242:106. Locations: -.
RPKI & ASPA
6 of 6 prefix(es) covered by a valid ROA.
| Prefix | RPKI state | Reason | Covering VRP(s) |
|---|---|---|---|
2a01:65c0:e01::/48 | ✓ valid | matched VRP (correct origin, length within maxLength) | AS3242 /48 maxLen 48 (ripe); AS3242 /32 maxLen 32 (ripe) |
2a01:65c0:200::/40 | ✓ valid | matched VRP (correct origin, length within maxLength) | AS3242 /40 maxLen 40 (ripe); AS3242 /32 maxLen 32 (ripe) |
2a01:65c0::/32 | ✓ valid | matched VRP (correct origin, length within maxLength) | AS3242 /32 maxLen 32 (ripe) |
2a01:65c0:101::/48 | ✓ valid | matched VRP (correct origin, length within maxLength) | AS3242 /48 maxLen 48 (ripe); AS3242 /32 maxLen 32 (ripe) |
2a01:65c0:100::/48 | ✓ valid | matched VRP (correct origin, length within maxLength) | AS3242 /48 maxLen 48 (ripe); AS3242 /32 maxLen 32 (ripe) |
2a01:65c0:e00::/48 | ✓ valid | matched VRP (correct origin, length within maxLength) | AS3242 /48 maxLen 48 (ripe); AS3242 /32 maxLen 32 (ripe) |
Random-IP probe (yarrp) into the AS' prefixes
We probed 69 arbitrary IPv6 address(es) inside AS3242's announced prefix(es). No router inside the prefix responded. The deepest visible hop was 2001:7f8:b:100:1d1:a5d0:3242:106 at hop 11 - that router does not answer ICMPv6 Echo. This is not in AS3242'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 2026-09-23T12:01:38Z
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
Path (traceroute + mtr + PTR)
| # | IP / PTR | RTT | mtr loss | AS | AS holder |
|---|---|---|---|---|---|
| 1 | 2a09:ab81::1 | 0.5ms | 0%* | AS60733 | PERKE-NET - ZORAN PEROVIC trading as Agencija Perke.NET, RS |
| 2 | sox-pn.sox.rs 2001:7f8:1e:8::3a | 0.3ms | 0% | AS13004 | SOX - Serbian Open Exchange DOO, RS |
| 3 | 2001:7f8:1e:8::3d | 0.4ms | 0% | AS13004 | SOX - Serbian Open Exchange DOO, RS |
| 4 | 2a02:2d8:0:a00e:232a | 12.6ms | 0% | - | |
| 5 | RT.MIX.MIL.IT.retn.net 2a02:2d8::57f5:e080 | 24.0ms | 0% | AS9002 | RETN-AS - RETN Limited, GB |
| 6 | GW-ITNet.retn.net 2a02:2d8:1:b811:232a::1 | 28.9ms | 0% | AS9002 | RETN-AS - RETN Limited, GB |
| 7 | 2a01:65c0:100::3 | 30.9ms | 0% | AS3242 | ASN-ITNET - REEVO S.P.A., IT |
tracepath -6
1?: [LOCALHOST] 0.017ms pmtu 1500
1: _gateway 0.594ms
1: _gateway 0.745ms
2: sox-pn.sox.rs 0.597ms
3: 2001:7f8:1e:8::3d 0.778ms asymm 2
4: ae8-930.RT.IRX.VIE.AT.retn.net 13.465ms asymm 3
5: RT.MIX.MIL.IT.retn.net 24.340ms asymm 4
6: GW-ITNet.retn.net 29.293ms asymm 5
7: 2a01:65c0:100::3 30.863ms reached
Resume: pmtu 1500 hops 7 back 6 From DE host (Berlin) openRFC 4890 ✓
filter likely at: (none) · min PMTU on path: 1500
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 | 0.4ms | 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 | 10.7ms | 0% | - | NA |
| 4 | RT.MIX.MIL.IT.retn.net 2a02:2d8::57f5:e080 | 19.0ms | 0% | AS9002 | RETN-AS - RETN Limited, GB |
| 5 | * | - | 30% | - | |
| 6 | 2a01:65c0:100::3 | 21.3ms | 0% | AS3242 | ASN-ITNET - REEVO S.P.A., IT |
Rate-limited ICMPv6: hop 5 (loss between 5% and 95% across mtr cycles - the router replies but only sometimes).
tracepath -6
1?: [LOCALHOST] 0.030ms pmtu 1500
1: xe-0-0-13-178.gw01.ber01.as59645.net 0.749ms
1: xe-0-0-13-178.gw01.ber01.as59645.net 0.714ms
2: ae0-2453.cr10.ber01.lwlcom.net 1.021ms
3: retn.bcix.de 10.929ms asymm 5
4: RT.MIX.MIL.IT.retn.net 22.576ms asymm 5
5: GW-ITNet.retn.net 20.298ms asymm 11
6: 2a01:65c0:100::3 20.881ms reached
Resume: pmtu 1500 hops 6 back 12 From DE host (Düsseldorf) openRFC 4890 ✓
filter likely at: (none) · min PMTU on path: 1500
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 | 0.2ms | 0%* | AS59645 | WYBT-NET - Tobias Fiebig, DE |
| 2 | ipv6.decix-dusseldorf.core1.dus1.he.net 2001:7f8:9e::1b1b:0:1 | 5.5ms | 0% | - | NA |
| 3 | 100ge0-0-0-18.core4.fra1.he.net 2001:470:0:52e::1 | 7.6ms | 30% | AS6939 | HURRICANE - Hurricane Electric LLC, US |
| 4 | be10.core1.zrh2.he.net 2001:470:e:153::2 | 12.2ms | 0% | AS6939 | HURRICANE - Hurricane Electric LLC, US |
| 5 | be1.core1.mil2.he.net 2001:470:e:dd::1 | 16.8ms | 0% | AS6939 | HURRICANE - Hurricane Electric LLC, US |
| 6 | * | - | - | - | |
| 7 | 2001:470:2bf::2 | 13.7ms | 70% | AS6939 | HURRICANE - Hurricane Electric LLC, US |
| 8 | 2a01:65c0:100::3 | 15.0ms | 0% | AS3242 | ASN-ITNET - REEVO S.P.A., IT |
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] 0.025ms pmtu 1500
1: xe-0-0-12-142.gw01.dus01.as59645.net 0.570ms
1: xe-0-0-12-142.gw01.dus01.as59645.net 0.499ms
2: ipv6.decix-dusseldorf.core1.dus1.he.net 6.834ms asymm 3
3: 100ge0-0-0-18.core4.fra1.he.net 6.828ms asymm 4
4: be10.core1.zrh2.he.net 12.038ms asymm 5
5: be1.core1.mil2.he.net 15.670ms asymm 6
6: no reply
7: 2001:470:2bf::2 14.158ms asymm 10
8: 2a01:65c0:100::3 15.146ms reached
Resume: pmtu 1500 hops 8 back 11 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::2 | 1.1ms | 0% | AS203993 | GNA-DC1-AS - S.J.M. Steffann, NL |
| 2 | * | - | 0%* | - | |
| 3 | speed-ix.fibertelecom.it 2001:7f8:b7::a504:1327:1 | 4.5ms | 0% | - | NA |
| 4 | 2a03:b020::226 | 20.8ms | 0% | AS41327 | FIBERTELECOM-AS - Fiber Telecom S.p.A., IT |
| 5 | 2a03:b020:0:223::2 | 19.3ms | 30% | AS41327 | FIBERTELECOM-AS - Fiber Telecom S.p.A., IT |
| 6 | 2a01:65c0:100::3 | 22.3ms | 0% | AS3242 | ASN-ITNET - REEVO S.P.A., IT |
Rate-limited ICMPv6: hop 5 (loss between 5% and 95% across mtr cycles - the router replies but only sometimes).
tracepath -6
1?: [LOCALHOST] 0.031ms pmtu 1500
1: 2a00:8642:42::2 3.183ms
1: 2a00:8642:42::2 3.281ms
2: gw.friends.steffann.nl 3.228ms
3: speed-ix.fibertelecom.it 6.018ms
4: 2a03:b020::226 20.431ms
5: 2a03:b020:0:223::2 26.752ms asymm 9
6: 2a01:65c0:100::3 23.778ms reached
Resume: pmtu 1500 hops 6 back 10 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 | * | - | 0%* | - | |
| 2 | * | - | 0%* | - | |
| 3 | 2a12:d8c0:101f:103::1 | 8.4ms | - | AS204471 | KARSOLINK - 2S Computers SRL, IT |
| 4 | itnet2-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:a5d0:3242:106 | 30.5ms | 0% | - | NA |
| 5 | 2a01:65c0:100::3 | 33.2ms | 0% | AS3242 | ASN-ITNET - REEVO S.P.A., IT |
tracepath -6
1?: [LOCALHOST] 0.014ms pmtu 1500
1: karsolink-01.net.karsolink.com 0.692ms
2: 2a12:d8c0:109f:121::a1 1.040ms
3: 2a12:d8c0:101f:103::1 9.111ms
4: itnet2-v6.mix-it.net 31.178ms asymm 6
5: 2a01:65c0:100::3 32.061ms reached
Resume: pmtu 1500 hops 5 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 | 0.4ms | 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 | 2a03:a100:0:201:1::1 | 0.5ms | 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 | 1.7ms | 0% | AS6939 | HURRICANE - Hurricane Electric LLC, US |
| 5 | * | - | - | - | |
| 6 | port-channel1.core1.zag2.he.net 2001:470:0:2ea::2 | 4.9ms | 0% | AS6939 | HURRICANE - Hurricane Electric LLC, US |
| 7 | * | - | - | - | |
| 8 | 2001:470:2bf::2 | 10.9ms | 10% | AS6939 | HURRICANE - Hurricane Electric LLC, US |
| 9 | 2a01:65c0:100::3 | 11.6ms | 0% | AS3242 | ASN-ITNET - REEVO S.P.A., IT |
Rate-limited ICMPv6: hop 8 (loss between 5% and 95% across mtr cycles - the router replies but only sometimes).
tracepath -6
1?: [LOCALHOST] 0.016ms pmtu 9000
1: fw1-lju.6connect.com 0.547ms
1: fw1-lju.6connect.com 0.644ms
2: ccr-to-fw-ccr1-gw-lju.6connect.com 1.086ms
3: 2a03:a100:0:201:1::1 0.828ms
4: 2a03:a100:0:201:1::1 0.816ms pmtu 1500
4: e0-1.core1.lju1.he.net 2.363ms
5: no reply
6: port-channel1.core1.zag2.he.net 4.319ms
7: no reply
8: 2001:470:2bf::2 11.138ms asymm 6
9: 2a01:65c0:100::3 12.344ms reached
Resume: pmtu 1500 hops 9 back 7 From SLO host (T-2) openRFC 4890 ✓
filter likely at: (none) · min PMTU on path: 1500
Path (traceroute + mtr + PTR)
| # | IP / PTR | RTT | mtr loss | AS | AS holder |
|---|---|---|---|---|---|
| 1 | 2a01:261:313:b814::1 | 0.5ms | 0%* | AS34779 | T-2-AS - T-2, d.o.o., SI |
| 2 | 2a01:260:1::225 | 1.6ms | 0%* | AS34779 | T-2-AS - T-2, d.o.o., SI |
| 3 | 2a01-260-1-1--9c.core6.t-2.net 2a01:260:1:1::9c | 2.9ms | 0%* | AS34779 | T-2-AS - T-2, d.o.o., SI |
| 4 | * | - | - | - | |
| 5 | * | - | 0% | - | |
| 6 | port-channel1.core1.zag2.he.net 2001:470:0:2ea::2 | 10.0ms | - | AS6939 | HURRICANE - Hurricane Electric LLC, US |
| 7 | 2001:470:2bf::2 | 16.8ms | 10% | AS6939 | HURRICANE - Hurricane Electric LLC, US |
| 8 | 2a01:65c0:100::3 | 17.7ms | 0% | AS3242 | ASN-ITNET - REEVO S.P.A., IT |
Rate-limited ICMPv6: hop 7 (loss between 5% and 95% across mtr cycles - the router replies but only sometimes).
tracepath -6
1?: [LOCALHOST] 0.028ms pmtu 1500
1: 2a01:261:313:b814::1 2.604ms
1: no reply
2: 2a01:260:1::225 7.155ms
3: 2a01-260-1-1--9c.core6.t-2.net 2.612ms
4: 2a01-260-1-1--38.core6.t-2.net 3.182ms asymm 3
5: port-channel1.core1.zag2.he.net 10.252ms asymm 7
6: port-channel1.core1.zag2.he.net 10.043ms asymm 7
7: no reply
8: 2a01:65c0:100::3 17.938ms reached
Resume: pmtu 1500 hops 8 back 8