AS overview
Test target: 2a02:5640::1 · static prefix probe · address space: PA · prefixes announced: 1
prefix(es): 2a02:5640::/29
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 | ||
2a02:5640::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 2012-01-22. IPv6 LAN: 2001:7f8:b:100:1d1:a5d0:9137:82. Locations: -.
RPKI & ASPA
1 of 1 prefix(es) covered by a valid ROA.
| Prefix | RPKI state | Reason | Covering VRP(s) |
|---|---|---|---|
2a02:5640::/29 | ✓ valid | matched VRP (correct origin, length within maxLength) | AS9137 /29 maxLen 29 (ripe) |
Random-IP probe (yarrp) into the AS' prefixes
We probed 35 arbitrary IPv6 address(es) inside AS9137's announced prefix(es). No router inside the prefix responded. The deepest visible hop was 2001:4ba0:ffe9:9a::2 at hop 12 - that router answers ICMPv6 Echo. This is not in AS9137'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 2026-09-23T12:03:01Z
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 | 0.1ms | 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 | 0.3ms | 0% | AS13004 | SOX - Serbian Open Exchange DOO, RS |
| 4 | 2001:67c:128c::699 | 19.4ms | 0% | - | NA |
| 5 | 2a02:5640::1 | 43.3ms | 0% | AS9137 | ASN-UNO - Uno Communications SpA, IT |
tracepath -6
1?: [LOCALHOST] 0.020ms pmtu 1500
1: _gateway 0.812ms
1: _gateway 1.171ms
2: sox-pn.sox.rs 0.666ms
3: 2001:7f8:1e:8::3d 0.759ms asymm 2
4: 2001:67c:128c::699 18.193ms
5: 2a02:5640::1 45.255ms reached
Resume: pmtu 1500 hops 5 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 | 0.3ms | 0%* | AS59645 | WYBT-NET - Tobias Fiebig, DE |
| 2 | ae0-2453.cr10.ber01.lwlcom.net 2a06:d1c0::dead:beef:1c02 | 0.7ms | 0%* | AS59645 | WYBT-NET - Tobias Fiebig, DE |
| 3 | ae0-150.cr10.fra01.lwlcom.net 2a00:c380:b200:230::174 | 10.5ms | 0% | AS50629 | LWLCOM - LWLcom GmbH, DE |
| 4 | ae6-3257.cr5-fra2.ip6.gtt.net 2001:668:0:3:ffff:1:0:3d5d | 9.4ms | 0% | AS3257 | GTT-BACKBONE - GTT Communications Inc., US |
| 5 | 2001:668:0:2:ffff:0:8d88:6e29 | 9.5ms | 0% | AS3257 | GTT-BACKBONE - GTT Communications Inc., US |
| 6 | 2001:41a8:600:2::1d5 | 15.4ms | 0% | AS6762 | SEABONE-NET - TELECOM ITALIA SPARKLE S.p.A., IT |
| 7 | 2001:41a8:20::60 | 19.4ms | 0% | AS6762 | SEABONE-NET - TELECOM ITALIA SPARKLE S.p.A., IT |
| 8 | 2a02:5640::1 | 19.6ms | 0% | AS9137 | ASN-UNO - Uno Communications SpA, IT |
tracepath -6
1?: [LOCALHOST] 0.032ms pmtu 1500
1: xe-0-0-13-178.gw01.ber01.as59645.net 0.855ms
1: xe-0-0-13-178.gw01.ber01.as59645.net 1.230ms
2: ae0-2453.cr10.ber01.lwlcom.net 1.445ms
3: ae0-150.cr10.fra01.lwlcom.net 11.582ms asymm 7
4: ae6-3257.cr5-fra2.ip6.gtt.net 11.606ms asymm 9
5: 2001:668:0:2:ffff:0:8d88:6e29 10.074ms asymm 10
6: 2001:41a8:600:2::1d5 20.670ms
7: 2001:41a8:20::60 20.034ms
8: 2a02:5640::1 19.719ms reached
Resume: pmtu 1500 hops 8 back 11 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 | 0.1ms | 0%* | AS59645 | WYBT-NET - Tobias Fiebig, DE |
| 2 | eth1-0-12-h5594.edge5-dus1.bb.wiit.network 2001:4ba0:92f4:3::1 | 9.1ms | 0% | AS24961 | MYLOC-AS - WIIT AG, DE |
| 3 | lag13.agr3-dus3.bb.wiit.network 2001:4ba0:ffe9:7d::1 | 50.4ms | 0% | AS24961 | MYLOC-AS - WIIT AG, DE |
| 4 | lag30.core3-dus1.bb.wiit.network 2001:4ba0:ffe9:109::2 | 0.3ms | 0% | AS24961 | MYLOC-AS - WIIT AG, DE |
| 5 | lag0-vl1011.core1-fra-ix.bb.wiit.network 2001:4ba0:ffe9:8a::2 | 4.4ms | 0% | AS24961 | MYLOC-AS - WIIT AG, DE |
| 6 | lag0-vl1001.core1-nbg-ncd.bb.wiit.network 2001:4ba0:ffe9:103e::1 | 6.8ms | 0% | AS24961 | MYLOC-AS - WIIT AG, DE |
| 7 | lag0-vl6.core2-nbg-ncd.bb.wiit.network 2001:4ba0:ffe9:103b::1 | 7.4ms | 0% | AS24961 | MYLOC-AS - WIIT AG, DE |
| 8 | 2001:4ba0:ffe9:b8 | 9.7ms | 0% | - | |
| 9 | lag0-vl1009.core1-muc-eq3.bb.wiit.network 2001:4ba0:ffe9:a7::1 | 9.9ms | 0% | AS24961 | MYLOC-AS - WIIT AG, DE |
| 10 | lag0-vl1001.core1-pda-vsix.bb.wiit.network 2001:4ba0:ffe9:da::2 | 20.4ms | 0% | AS24961 | MYLOC-AS - WIIT AG, DE |
| 11 | lag0-vl1001.core1-mil-mix.bb.wiit.network 2001:4ba0:ffe9:db::2 | 20.3ms | 0% | AS24961 | MYLOC-AS - WIIT AG, DE |
| 12 | lag0-vl5.core3-mil-irid.bb.wiit.network 2001:4ba0:ffe9:9a::2 | 20.2ms | 0% | AS24961 | MYLOC-AS - WIIT AG, DE |
| 13 | 2a02:5640::1 | 20.6ms | 0% | AS9137 | ASN-UNO - Uno Communications SpA, IT |
tracepath -6
1?: [LOCALHOST] 0.010ms pmtu 1500
1: xe-0-0-12-142.gw01.dus01.as59645.net 0.394ms
1: xe-0-0-12-142.gw01.dus01.as59645.net 0.288ms
2: eth1-0-12-h5594.edge5-dus1.bb.wiit.network 22.201ms
3: no reply
4: lag11.core3-dus1.bb.wiit.network 0.396ms
5: lag0-vl1011.core1-fra-ix.bb.wiit.network 4.158ms
6: lag0-vl1001.core1-nbg-ncd.bb.wiit.network 6.750ms
7: lag0-vl6.core2-nbg-ncd.bb.wiit.network 6.811ms
8: lag0-vl1006.core2-muc2.bb.wiit.network 9.508ms
9: lag0-vl1009.core1-muc-eq3.bb.wiit.network 9.649ms
10: lag0-vl1001.core1-pda-vsix.bb.wiit.network 20.318ms
11: lag0-vl1001.core1-mil-mix.bb.wiit.network 20.386ms asymm 9
12: lag0-vl5.core3-mil-irid.bb.wiit.network 20.152ms asymm 8
13: 2a02:5640::1 20.871ms reached
Resume: pmtu 1500 hops 13 back 10 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 | 2.3ms | 0% | AS203993 | GNA-DC1-AS - S.J.M. Steffann, NL |
| 2 | * | - | 0%* | - | |
| 3 | 2a00:1ca8:1::194 | 3.8ms | 0% | AS50673 | Serverius-as - Serverius Holding B.V., NL |
| 4 | 2a03:3f40::10:41 | 4.2ms | 0% | AS50673 | Serverius-as - Serverius Holding B.V., NL |
| 5 | 2001:978:2:40::3:1 | 3.2ms | 0% | AS174 | COGENT-174 - Cogent Communications, LLC, US |
| 6 | be3458.ccr42.ams03.atlas.cogentco.com 2001:550:0:1000::9a36:27b9 | 6.9ms | 0% | AS174 | COGENT-174 - Cogent Communications, LLC, US |
| 7 | be3499.rcr22.ams05.atlas.cogentco.com 2001:550:0:1000::9a36:3c16 | 4.6ms | 0% | AS174 | COGENT-174 - Cogent Communications, LLC, US |
| 8 | 2001:978:3::a6 | 10.7ms | 0% | AS174 | COGENT-174 - Cogent Communications, LLC, US |
| 9 | 2001:41a8:20::60 | 24.4ms | 0% | AS6762 | SEABONE-NET - TELECOM ITALIA SPARKLE S.p.A., IT |
| 10 | 2a02:5640::1 | 20.9ms | 0% | AS9137 | ASN-UNO - Uno Communications SpA, IT |
tracepath -6
1?: [LOCALHOST] 0.064ms pmtu 1500
1: 2a00:8642:42::2 3.376ms
1: 2a00:8642:42::2 3.198ms
2: gw.friends.steffann.nl 5.232ms
3: 2a00:1ca8:1::194 4.010ms
4: 2a03:3f40::10:41 4.152ms
5: 2001:978:2:40::3:1 4.597ms
6: be3457.ccr41.ams03.atlas.cogentco.com 6.717ms
7: be3500.rcr22.ams05.atlas.cogentco.com 5.410ms
8: 2001:978:3::a6 10.416ms asymm 9
9: 2001:41a8:20::60 20.581ms asymm 10
10: 2a02:5640::1 21.739ms reached
Resume: pmtu 1500 hops 10 back 6 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 | 0% | AS204471 | KARSOLINK - 2S Computers SRL, IT |
| 4 | 2a02:5640::1 | 9.1ms | 0% | AS9137 | ASN-UNO - Uno Communications SpA, IT |
tracepath -6
1?: [LOCALHOST] 0.025ms pmtu 1500
1: karsolink-01.net.karsolink.com 0.984ms
1: karsolink-01.net.karsolink.com 0.506ms
2: 2a12:d8c0:109f:121::a1 0.808ms
3: 2a12:d8c0:101f:103::1 9.140ms
4: 2a02:5640::1 9.837ms reached
Resume: pmtu 1500 hops 4 back 5 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 | 0.2ms | 0%* | AS8038 | 6CONNECT - 6connect, Inc., US |
| 2 | * | - | 0%* | - | |
| 3 | * | - | 0% | - | |
| 4 | * | - | 0% | - | |
| 5 | * | - | - | - | |
| 6 | * | - | 10% | - | |
| 7 | * | - | - | - | |
| 8 | 2a02:5640::1 | 12.7ms | 0% | AS9137 | ASN-UNO - Uno Communications SpA, IT |
Rate-limited ICMPv6: hop 6 (loss between 5% and 95% across mtr cycles - the router replies but only sometimes).
tracepath -6
1?: [LOCALHOST] 0.023ms pmtu 9000
1: fw1-lju.6connect.com 0.881ms
1: fw1-lju.6connect.com 0.549ms
2: ccr-to-fw-ccr1-gw-lju.6connect.com 0.918ms
3: 2a03:a100:0:201:1::1 0.917ms
4: 2a03:a100:0:201:1::1 1.116ms pmtu 1500
4: e0-1.core1.lju1.he.net 2.104ms
5: no reply
6: port-channel1.core1.zag2.he.net 4.283ms
7: no reply
8: 2a02:5640::1 12.858ms reached
Resume: pmtu 1500 hops 8 back 9 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 | * | - | 0%* | - | |
| 2 | 2a01:260:1::225 | 2.1ms | 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 | 2.3ms | 0%* | AS34779 | T-2-AS - T-2, d.o.o., SI |
| 4 | 2a01-260-1-1--39.core6.t-2.net 2a01:260:1:1::39 | 2.2ms | 10% | AS34779 | T-2-AS - T-2, d.o.o., SI |
| 5 | hurricane-electric.nikhef.nlsix.net 2001:7f8:13::a500:6939:1 | 34.6ms | 0% | - | NA |
| 6 | be1.core2.fra2.he.net 2001:470:e:43::2 | 38.6ms | 60% | AS6939 | HURRICANE - Hurricane Electric LLC, US |
| 7 | be3.core4.fra1.he.net 2001:470:e:5a::2 | 38.6ms | 0% | AS6939 | HURRICANE - Hurricane Electric LLC, US |
| 8 | be1.core1.mil2.he.net 2001:470:e:dd::1 | 34.3ms | 0% | AS6939 | HURRICANE - Hurricane Electric LLC, US |
| 9 | be1.core1.mil2.he.net 2001:470:e:dd::1 | 35.5ms | - | AS6939 | HURRICANE - Hurricane Electric LLC, US |
| 10 | * | - | 0% | - | |
| 11 | * | - | - | - | |
| 12 | * | - | - | - | |
| 13 | * | - | - | - | |
| 14 | * | - | - | - | |
| 15 | * | - | - | - | |
| 16 | 2a02:5640::1 | 33.9ms | - | AS9137 | ASN-UNO - Uno Communications SpA, IT |
Rate-limited ICMPv6: hop 4, hop 6 (loss between 5% and 95% across mtr cycles - the router replies but only sometimes).
tracepath -6
1?: [LOCALHOST] 0.027ms pmtu 1500
1: 2a01:261:313:b814::1 1.635ms
1: 2a01:261:313:b814::1 1.290ms
2: 2a01:260:1::225 19.906ms
3: 2a01-260-1-1--9a.core6.t-2.net 2.653ms
4: hurricane-electric.nikhef.nlsix.net 34.793ms
5: hurricane-electric.nikhef.nlsix.net 37.513ms asymm 4
6: be3.core4.fra1.he.net 40.028ms asymm 7
7: be10.core1.zrh2.he.net 46.271ms asymm 8
8: be10.core1.zrh2.he.net 45.110ms
9: be1.core1.mil2.he.net 34.135ms asymm 7
10: 2a02:5640::1 33.606ms reached
Resume: pmtu 1500 hops 10 back 8