AS overview
Test target: 2a04:b540:3000:2::3 · (SPF ip6: literal) · address space: unknown · prefixes announced: 3
prefix(es): 2a10:9686::/32, 2a04:b540:3000::/36, 2a09:31c0:babe::/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 | ||
2a04:b540:3000:2::2eserver.rs | drv | ✓ | ✓ | open | open | ✓ | ✓ | ✓ | open | open | ✓ | ✓ | ✓ | open | open | - | ✓ | ✓ | open | open | ✓ | ✓ | ✓ | open | open | ✓ | ✓ | ✓ | open | open | ✓ | ✓ | ✓ | open | open | ✓ |
2a04:b540:3000:2::3 | SPF | ✓ | ✓ | open | open | ✓ | ✓ | ✓ | open | open | ✓ | ✓ | ✓ | open | open | - | ✓ | ✓ | open | open | ✓ | ✓ | ✓ | open | open | ✓ | ✓ | ✓ | open | open | ✓ | ✓ | ✓ | open | open | - |
SOX peering
Not an SOX member, but our traceroute path crosses the SOX LAN from SRB host (SOX, Belgrade) - reached via an SOX-resident transit operator.
RPKI & ASPA
3 of 3 prefix(es) covered by a valid ROA.
| Prefix | RPKI state | Reason | Covering VRP(s) |
|---|---|---|---|
2a04:b540:3000::/36 | ✓ valid | matched VRP (correct origin, length within maxLength) | AS205007 /36 maxLen 36 (ripe) |
2a10:9686::/32 | ✓ valid | matched VRP (correct origin, length within maxLength) | AS205007 /32 maxLen 32 (ripe) |
2a09:31c0:babe::/48 | ✓ valid | matched VRP (correct origin, length within maxLength) | AS205007 /48 maxLen 48 (ripe) |
Random-IP probe (yarrp) into the AS' prefixes
We probed 70 arbitrary IPv6 address(es) inside AS205007's announced prefix(es). No router inside the prefix responded. The deepest visible hop was 2001:978:2:c8::1 at hop 16 - that router does not answer ICMPv6 Echo. This is not in AS205007's announced prefix; operationally it's the AS-edge / peering interface (often on a SOX 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 2026-09-23T11:08:58Z
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) 0.9ms
4/4
Echo 1500B (DF) 0.9ms
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 | 0.3ms | 0%* | AS60733 | PERKE-NET - ZORAN PEROVIC trading as Agencija Perke.NET, RS |
| 2 | telekom-srbija.sox.rs @SOX 2001:7f8:1e::38 | 1.3ms | 0% | AS13004 | Serbian Open eXchange |
| 3 | 2a00:e90::212:200:6:60 | 0.8ms | 0% | AS8400 | TELEKOM-AS - TELEKOM SRBIJA a.d., RS |
| 4 | * | - | - | - | |
| 5 | 2a02:e40::23 | 1.4ms | 90% | AS6700 | BEOTEL-AS - TELEKOM SRBIJA a.d., RS |
| 6 | 2a02:e40::100:e | 19.1ms | 0% | AS6700 | BEOTEL-AS - TELEKOM SRBIJA a.d., RS |
| 7 | service-1.rs.eserver.net 2a04:b540:3000:2::3 | 1.0ms | 0% | AS205007 | ESERVER-RS - Maxim Azarov trading as eServer, RS |
Rate-limited ICMPv6: hop 5 (loss between 5% and 95% across mtr cycles - the router replies but only sometimes).
tracepath -6
1?: [LOCALHOST] 0.035ms pmtu 1500
1: _gateway 0.480ms
1: _gateway 0.407ms
2: telekom-srbija.sox.rs 0.580ms
3: 2a00:e90::212:200:6:60 0.955ms
4: no reply
5: 2a02:e40::23 1.705ms asymm 6
6: 2a02:e40::100:e 1.365ms asymm 7
7: service-1.rs.eserver.net 0.897ms !A
Resume: pmtu 1500 From DE host (Berlin) openRFC 4890 ✓
filter likely at: (none) · min PMTU on path: 1500
4/4
Echo small (56B) 29.0ms
4/4
Echo 1500B (DF) 29.0ms
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 | 0.3ms | 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 | retn.bcix.de 2001:7f8:19:1::232a:1 | 10.5ms | 0% | - | NA |
| 4 | * | - | 40% | - | |
| 5 | GW-TelekomSrbija.retn.net 2a02:2d8:0:e002:232a::1 | 26.7ms | 0% | AS9002 | RETN-AS - RETN Limited, GB |
| 6 | 2a00:e90::212:200:6:61 | 27.2ms | 0% | AS8400 | TELEKOM-AS - TELEKOM SRBIJA a.d., RS |
| 7 | 2a00:e90::212:200:6:60 | 26.6ms | 0% | AS8400 | TELEKOM-AS - TELEKOM SRBIJA a.d., RS |
| 8 | * | - | 80% | - | |
| 9 | * | - | - | - | |
| 10 | 2a02:e40::100:e | 29.6ms | 0% | AS6700 | BEOTEL-AS - TELEKOM SRBIJA a.d., RS |
| 11 | service-1.rs.eserver.net 2a04:b540:3000:2::3 | 29.0ms | 0% | AS205007 | ESERVER-RS - Maxim Azarov trading as eServer, RS |
Rate-limited ICMPv6: hop 4, hop 8 (loss between 5% and 95% across mtr cycles - the router replies but only sometimes).
tracepath -6
1?: [LOCALHOST] 0.021ms pmtu 1500
1: xe-0-0-13-178.gw01.ber01.as59645.net 0.580ms
1: xe-0-0-13-178.gw01.ber01.as59645.net 0.337ms
2: ae0-2453.cr10.ber01.lwlcom.net 0.809ms
3: retn.bcix.de 10.938ms asymm 5
4: RT.BIX.BUD.HU.retn.net 23.667ms asymm 6
5: GW-TelekomSrbija.retn.net 26.794ms asymm 6
6: 2a00:e90::212:200:6:8 26.898ms asymm 10
7: 2a00:e90::212:200:6:60 26.845ms asymm 8
8: 2a00:e90:0:c::7 28.574ms asymm 9
9: 2a02:e40::23 29.911ms asymm 11
10: 2a02:e40::100:e 29.756ms asymm 12
11: service-1.rs.eserver.net 29.431ms !A
Resume: pmtu 1500 From DE host (Düsseldorf) openRFC 4890 ✓
filter likely at: (none) · min PMTU on path: 1500
4/4
Echo small (56B) 26.0ms
4/4
Echo 1500B (DF) 26.0ms
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 | 0.4ms | 0%* | AS59645 | WYBT-NET - Tobias Fiebig, DE |
| 2 | eth1-0-12-h5594.edge5-dus1.bb.wiit.network 2001:4ba0:92f4:3::1 | 3.3ms | 0% | AS24961 | MYLOC-AS - WIIT AG, DE |
| 3 | lag13.agr3-dus3.bb.wiit.network 2001:4ba0:ffe9:7d::1 | 3.0ms | 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-vl1001.core4-dus1.bb.wiit.network 2001:4ba0:ffe9:123::3 | 0.3ms | 0% | AS24961 | MYLOC-AS - WIIT AG, DE |
| 6 | 2001:978:2:6::20 | 0.9ms | 0% | AS174 | COGENT-174 - Cogent Communications, LLC, US |
| 7 | be3690.rcr21.dus01.atlas.cogentco.com 2001:550:0:1000::9a19:1021 | 1.7ms | 0% | AS174 | COGENT-174 - Cogent Communications, LLC, US |
| 8 | be5490.ccr41.fra05.atlas.cogentco.com 2001:550:0:1000::9a36:3ed5 | 5.2ms | 0% | AS174 | COGENT-174 - Cogent Communications, LLC, US |
| 9 | be7944.ccr22.muc03.atlas.cogentco.com 2001:550:0:1000::9a36:4b61 | 10.4ms | 0% | AS174 | COGENT-174 - Cogent Communications, LLC, US |
| 10 | be5456.ccr81.vie01.atlas.cogentco.com 2001:550:0:1000::9a36:48a6 | 17.7ms | 0% | AS174 | COGENT-174 - Cogent Communications, LLC, US |
| 11 | be9457.ccr22.bts01.atlas.cogentco.com 2001:550:0:1000::9a36:3f92 | 17.2ms | 0% | AS174 | COGENT-174 - Cogent Communications, LLC, US |
| 12 | be3419.agr01.beg03.atlas.cogentco.com 2001:550:0:1000::8275:42 | 29.5ms | 0% | AS174 | COGENT-174 - Cogent Communications, LLC, US |
| 13 | be3948.rcr61.beg02.atlas.cogentco.com 2001:550:0:1000::9a36:4ab9 | 29.6ms | 0% | AS174 | COGENT-174 - Cogent Communications, LLC, US |
| 14 | 2001:978:2:c8::1 | 26.5ms | 0% | AS174 | COGENT-174 - Cogent Communications, LLC, US |
| 15 | be3947.rcr61.beg02.atlas.cogentco.com 2001:550:0:1000::9a36:4aad | 27.1ms | 0% | AS174 | COGENT-174 - Cogent Communications, LLC, US |
tracepath -6
1?: [LOCALHOST] 0.026ms pmtu 1500
1: xe-0-0-12-142.gw01.dus01.as59645.net 0.453ms
1: xe-0-0-12-142.gw01.dus01.as59645.net 0.281ms
2: eth1-0-12-h5594.edge5-dus1.bb.wiit.network 1.273ms
3: no reply
4: lag11.core3-dus1.bb.wiit.network 0.493ms
5: lag0-vl1001.core4-dus1.bb.wiit.network 0.416ms
6: 2001:978:2:6::20 1.334ms
7: be3690.rcr21.dus01.atlas.cogentco.com 2.003ms
8: be5490.ccr41.fra05.atlas.cogentco.com 35.534ms asymm 9
9: be5516.ccr21.muc03.atlas.cogentco.com 10.433ms asymm 10
10: be9456.ccr82.vie01.atlas.cogentco.com 17.301ms asymm 11
11: be9464.ccr51.beg03.atlas.cogentco.com 29.543ms asymm 12
12: be3419.agr01.beg03.atlas.cogentco.com 29.409ms asymm 13
13: be3947.rcr61.beg02.atlas.cogentco.com 29.752ms asymm 14
14: 2001:978:2:c8::1 27.150ms asymm 11
15: be3948.rcr61.beg02.atlas.cogentco.com 27.551ms asymm 14
16: service-1.rs.eserver.net 26.475ms !A
Resume: pmtu 1500 From NL host (go6lab) openRFC 4890 ✓
filter likely at: (none) · min PMTU on path: 1500
4/4
Echo small (56B) 33.8ms
4/4
Echo 1500B (DF) 34.5ms
yes
Type 1 dest-unreach
443,80
TCP responds on
Path (traceroute + mtr + PTR)
| # | IP / PTR | RTT | mtr loss | AS | AS holder |
|---|---|---|---|---|---|
| 1 | 2a00:8642:42::2 | 2.8ms | 0% | AS203993 | GNA-DC1-AS - S.J.M. Steffann, NL |
| 2 | * | - | 0%* | - | |
| 3 | 2a00:1ca8:1::194 | 8.3ms | 0% | AS50673 | Serverius-as - Serverius Holding B.V., NL |
| 4 | 2a03:3f40::10:33 | 9.5ms | 0% | AS50673 | Serverius-as - Serverius Holding B.V., NL |
| 5 | 2001:7f8:1::a500:8400:1 | 30.1ms | 0% | - | NA |
| 6 | 2a00:e90::212:200:5:7 | 33.0ms | 0% | AS8400 | TELEKOM-AS - TELEKOM SRBIJA a.d., RS |
| 7 | 2a00:e90::212:200:6:8 | 37.2ms | 0% | AS8400 | TELEKOM-AS - TELEKOM SRBIJA a.d., RS |
| 8 | 2a00:e90::212:200:6:60 | 35.9ms | 0% | AS8400 | TELEKOM-AS - TELEKOM SRBIJA a.d., RS |
| 9 | 2a00:e90:0:c::7 | 40.1ms | - | AS8400 | TELEKOM-AS - TELEKOM SRBIJA a.d., RS |
| 10 | 2a02:e40::23 | 38.3ms | 40% | AS6700 | BEOTEL-AS - TELEKOM SRBIJA a.d., RS |
| 11 | 2a02:e40::100:e | 37.7ms | 0% | AS6700 | BEOTEL-AS - TELEKOM SRBIJA a.d., RS |
| 12 | service-1.rs.eserver.net 2a04:b540:3000:2::3 | 34.1ms | 0% | AS205007 | ESERVER-RS - Maxim Azarov trading as eServer, RS |
Rate-limited ICMPv6: hop 10 (loss between 5% and 95% across mtr cycles - the router replies but only sometimes).
tracepath -6
1?: [LOCALHOST] 0.036ms pmtu 1500
1: 2a00:8642:42::2 3.238ms
1: 2a00:8642:42::2 4.157ms
2: gw.friends.steffann.nl 2.717ms
3: 2a00:1ca8:1::194 4.968ms
4: 2a03:3f40::10:33 8.573ms
5: 2001:7f8:1::a500:8400:1 24.394ms
6: 2a00:e90::212:200:5:7 37.186ms asymm 11
7: 2a00:e90::212:200:6:8 33.738ms asymm 10
8: 2a00:e90::212:200:6:60 35.015ms
9: no reply
10: 2a02:e40::23 36.531ms asymm 7
11: 2a02:e40::100:e 60.721ms asymm 8
12: service-1.rs.eserver.net 32.460ms !A
Resume: pmtu 1500 From ITA host (Karsolink) openRFC 4890 ✓
filter likely at: (none) · min PMTU on path: 1500
4/4
Echo small (56B) 39.1ms
3/4
Echo 1500B (DF) 39.2ms
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 | * | - | - | - | |
| 3 | * | - | - | - | |
| 4 | 2a03:b020:1:51::a | 10.0ms | 0% | AS41327 | FIBERTELECOM-AS - Fiber Telecom S.p.A., IT |
| 5 | 2a03:b020::246 | 10.0ms | 0% | AS41327 | FIBERTELECOM-AS - Fiber Telecom S.p.A., IT |
| 6 | 2001:978:2:2a::e7:1 | 10.6ms | 0% | AS174 | COGENT-174 - Cogent Communications, LLC, US |
| 7 | be10063.agr72.mil02.atlas.cogentco.com 2001:550:0:1000::9a19:c5d | 76.3ms | 0% | AS174 | COGENT-174 - Cogent Communications, LLC, US |
| 8 | port-channel10060.ccr91.mil02.atlas.cogentco.com 2001:550:0:1000::8275:361 | 10.1ms | 0% | AS174 | COGENT-174 - Cogent Communications, LLC, US |
| 9 | be3281.ccr51.beg03.atlas.cogentco.com 2001:550:0:1000::9a36:2765 | 28.0ms | 0% | AS174 | COGENT-174 - Cogent Communications, LLC, US |
| 10 | be3423.agr02.beg03.atlas.cogentco.com 2001:550:0:1000::8275:327a | 28.3ms | 0% | AS174 | COGENT-174 - Cogent Communications, LLC, US |
| 11 | be3948.rcr61.beg02.atlas.cogentco.com 2001:550:0:1000::9a36:4ab9 | 28.1ms | 0% | AS174 | COGENT-174 - Cogent Communications, LLC, US |
| 12 | 2001:978:2:c8::1 | 39.4ms | 0% | AS174 | COGENT-174 - Cogent Communications, LLC, US |
| 13 | service-1.rs.eserver.net 2a04:b540:3000:2::3 | 39.0ms | 0% | AS205007 | ESERVER-RS - Maxim Azarov trading as eServer, RS |
tracepath -6
1?: [LOCALHOST] 0.036ms pmtu 1500
1: karsolink-01.net.karsolink.com 0.684ms
1: karsolink-01.net.karsolink.com 0.654ms
2: 2a12:d8c0:109f:121::a1 0.724ms
3: 2a12:d8c0:101f:6::1 10.123ms
4: 2a03:b020:1:51::a 10.409ms
5: 2a03:b020::246 10.449ms
6: 2001:978:2:2a::e7:1 11.322ms
7: be10062.agr71.mil02.atlas.cogentco.com 11.200ms
8: port-channel10061.ccr92.mil02.atlas.cogentco.com 10.632ms
9: be3280.ccr51.beg03.atlas.cogentco.com 28.496ms
10: be3423.agr02.beg03.atlas.cogentco.com 28.763ms
11: be3948.rcr61.beg02.atlas.cogentco.com 28.671ms
12: 2001:978:2:c8::1 39.932ms asymm 9
13: service-1.rs.eserver.net 39.496ms !A
Resume: pmtu 1500 From SLO host (6connect) openRFC 4890 ✓
filter likely at: (none) · min PMTU on path: 1500
4/4
Echo small (56B) 30.5ms
4/4
Echo 1500B (DF) 30.6ms
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 | 0.3ms | 0%* | AS8038 | 6CONNECT - 6connect, Inc., US |
| 2 | * | - | - | - | |
| 3 | 2a03:a100:0:201:1::1 | 0.7ms | 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 | 2.0ms | - | AS6939 | HURRICANE - Hurricane Electric LLC, US |
| 5 | 100ge0-0-0-5.core1.vie1.he.net 2001:470:0:578::1 | 8.8ms | 0% | AS6939 | HURRICANE - Hurricane Electric LLC, US |
| 6 | 2001:7f8:30:0:2:1:0:8400 | 22.6ms | 0% | - | NA |
| 7 | 2a00:e90::212:200:5:7 | 33.5ms | 0% | AS8400 | TELEKOM-AS - TELEKOM SRBIJA a.d., RS |
| 8 | 2a00:e90::212:200:6:8 | 33.9ms | 0% | AS8400 | TELEKOM-AS - TELEKOM SRBIJA a.d., RS |
| 9 | 2a00:e90::212:200:6:60 | 33.7ms | 0% | AS8400 | TELEKOM-AS - TELEKOM SRBIJA a.d., RS |
| 10 | * | - | 80% | - | |
| 11 | 2a02:e40::23 | 31.3ms | - | AS6700 | BEOTEL-AS - TELEKOM SRBIJA a.d., RS |
| 12 | 2a02:e40::100:e | 30.9ms | 0% | AS6700 | BEOTEL-AS - TELEKOM SRBIJA a.d., RS |
| 13 | service-1.rs.eserver.net 2a04:b540:3000:2::3 | 30.7ms | 0% | AS205007 | ESERVER-RS - Maxim Azarov trading as eServer, RS |
Rate-limited ICMPv6: hop 10 (loss between 5% and 95% across mtr cycles - the router replies but only sometimes).
tracepath -6
1?: [LOCALHOST] 0.017ms pmtu 9000
1: fw1-lju.6connect.com 0.435ms
1: fw1-lju.6connect.com 0.391ms
2: no reply
3: 2a03:a100:0:201:1::1 1.233ms
4: 2a03:a100:0:201:1::1 0.746ms pmtu 1500
4: e0-1.core1.lju1.he.net 1.920ms
5: 100ge0-0-0-5.core1.vie1.he.net 9.141ms
6: 2001:7f8:30:0:2:1:0:8400 23.089ms asymm 10
7: 2a00:e90::212:200:5:7 34.075ms asymm 14
8: 2a00:e90::212:200:6:8 33.897ms asymm 13
9: 2a00:e90::212:200:6:60 34.425ms asymm 12
10: no reply
11: 2a02:e40::23 31.529ms
12: 2a02:e40::100:e 31.051ms
13: service-1.rs.eserver.net 31.364ms !A
Resume: pmtu 1500 From SLO host (T-2) openRFC 4890 ✓
filter likely at: (none) · min PMTU on path: 1500
4/4
Echo small (56B) 19.6ms
4/4
Echo 1500B (DF) 19.7ms
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 | 2.6ms | 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 | 2.6ms | 0%* | AS34779 | T-2-AS - T-2, d.o.o., SI |
| 4 | 2a01-260-1-1--c.core6.t-2.net 2a01:260:1:1::c | 4.3ms | 0%* | AS34779 | T-2-AS - T-2, d.o.o., SI |
| 5 | 2001:7f8:30:0:2:1:0:8400 | 9.0ms | 0%* | - | NA |
| 6 | 2a00:e90::212:200:5:7 | 17.0ms | 0% | AS8400 | TELEKOM-AS - TELEKOM SRBIJA a.d., RS |
| 7 | 2a00:e90::212:200:5:7 | 17.5ms | 0% | AS8400 | TELEKOM-AS - TELEKOM SRBIJA a.d., RS |
| 8 | 2a00:e90::212:200:6:8 | 17.7ms | 0% | AS8400 | TELEKOM-AS - TELEKOM SRBIJA a.d., RS |
| 9 | 2a00:e90::212:200:6:60 | 19.0ms | 0% | AS8400 | TELEKOM-AS - TELEKOM SRBIJA a.d., RS |
| 10 | 2a02:e40::23 | 21.5ms | 20% | AS6700 | BEOTEL-AS - TELEKOM SRBIJA a.d., RS |
| 11 | 2a02:e40::100:e | 21.6ms | 70% | AS6700 | BEOTEL-AS - TELEKOM SRBIJA a.d., RS |
| 12 | 2a02:e40::100:e | 20.7ms | 0% | AS6700 | BEOTEL-AS - TELEKOM SRBIJA a.d., RS |
Rate-limited ICMPv6: hop 10, hop 11 (loss between 5% and 95% across mtr cycles - the router replies but only sometimes).
tracepath -6
1?: [LOCALHOST] 0.028ms pmtu 1500
1: no reply
2: 2a01:260:1::225 6.175ms
3: 2a01-260-1-1--9c.core6.t-2.net 3.119ms
4: 2a01-260-1-1--38.core6.t-2.net 1.828ms asymm 3
5: 2a01-260-1-1--c.core6.t-2.net 5.387ms asymm 4
6: 2a00:e90::212:200:5:7 17.145ms asymm 11
7: 2a00:e90::212:200:6:8 18.935ms asymm 10
8: 2a00:e90::212:200:6:8 17.903ms asymm 10
9: 2a00:e90::212:200:6:60 17.788ms asymm 8
10: 2a02:e40::23 21.156ms asymm 9
11: 2a02:e40::23 20.362ms asymm 9
12: service-1.rs.eserver.net 20.115ms !A
Resume: pmtu 1500