AS overview
Test target: 2a03:c680:f002::2 · static prefix probe · address space: PA · prefixes announced: 5
prefix(es): 2a03:c680:f002::/48, 2a03:c680::/29, 2a03:c680:f001::/48, 2a10:d100::/32, 2a03:c680:4001::/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 | ||
2a03:c680:f002::2 | prb | ✓ | ✓ | ? | ? | ✓ | ✓ | ✓ | ? | ? | ✓ | ✓ | ✓ | ? | ? | ✓ | ✓ | ✓ | ? | ? | ✓ | ✓ | ✓ | ? | ? | ✓ | ✓ | ✓ | ? | ? | ✓ | ✓ | ✓ | ? | ? | ✓ |
RPKI & ASPA
5 of 5 prefix(es) covered by a valid ROA.
| Prefix | RPKI state | Reason | Covering VRP(s) |
|---|---|---|---|
2a03:c680:f002::/48 | ✓ valid | matched VRP (correct origin, length within maxLength) | AS28919 /29 maxLen 48 (ripe) |
2a03:c680::/29 | ✓ valid | matched VRP (correct origin, length within maxLength) | AS28919 /29 maxLen 48 (ripe) |
2a03:c680:f001::/48 | ✓ valid | matched VRP (correct origin, length within maxLength) | AS28919 /29 maxLen 48 (ripe) |
2a10:d100::/32 | ✓ valid | matched VRP (correct origin, length within maxLength) | AS28919 /32 maxLen 32 (ripe) |
2a03:c680:4001::/48 | ✓ valid | matched VRP (correct origin, length within maxLength) | AS28919 /29 maxLen 48 (ripe) |
Random-IP probe (yarrp) into the AS' prefixes
At least one router inside AS28919's announced prefix replied during the random-target probe. Hop(s): 2a03:c680:ffff:ffff::67. These are candidate targets for direct testing.
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 2026-09-23T13:35:20Z
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) 17.5ms
4/4
Echo 1500B (DF) 17.6ms
yes
Type 1 dest-unreach
-
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 | sox-pn.sox.rs 2001:7f8:1e:8::3a | 0.2ms | 0% | AS13004 | SOX - Serbian Open Exchange DOO, RS |
| 3 | e0-33.core2.beg1.he.net 2001:470:1:6e5::1 | 1.2ms | 0% | AS6939 | HURRICANE - Hurricane Electric LLC, US |
| 4 | e0-34.core2.bts1.he.net 2001:470:0:33f::2 | 8.4ms | 0% | AS6939 | HURRICANE - Hurricane Electric LLC, US |
| 5 | 100ge0-0-0-2.core1.vie1.he.net 2001:470:0:412::1 | 10.6ms | 20% | AS6939 | HURRICANE - Hurricane Electric LLC, US |
| 6 | * | - | - | - | |
| 7 | * | - | - | - | |
| 8 | 2a02:940::1:b1 | 16.9ms | 0% | AS21013 | ITANDTEL-AS - eww ag, AT |
| 9 | 2a03:c680:ffff:ffff::67 | 16.7ms | 0% | AS28919 | STWKUFSTEIN-AS - Stadtwerke Kufstein GmbH, AT |
| 10 | * | - | - | - | |
| 11 | * | - | - | - | |
| 12 | 2a03:c680:f002::2 | 17.6ms | 0% | AS28919 | STWKUFSTEIN-AS - Stadtwerke Kufstein GmbH, AT |
Rate-limited ICMPv6: hop 5 (loss between 5% and 95% across mtr cycles - the router replies but only sometimes).
tracepath -6
1?: [LOCALHOST] 0.022ms pmtu 1500
1: _gateway 0.780ms
1: _gateway 0.500ms
2: sox-pn.sox.rs 0.667ms
3: e0-33.core2.beg1.he.net 1.383ms
4: e0-34.core2.bts1.he.net 8.853ms
5: 100ge0-0-0-2.core1.vie1.he.net 10.701ms
6: no reply
7: no reply
8: 2a02:940::1:b1 16.971ms asymm 7
9: 2a03:c680:ffff:ffff::67 16.729ms asymm 8
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
Too many hops: pmtu 1500
Resume: pmtu 1500 From DE host (Berlin) openRFC 4890 ✓
filter likely at: (none) · min PMTU on path: 1500
4/4
Echo small (56B) 22.1ms
4/4
Echo 1500B (DF) 21.5ms
yes
Type 1 dest-unreach
-
TCP responds on
Path (traceroute + mtr + PTR)
| # | IP / PTR | RTT | mtr loss | AS | AS holder |
|---|---|---|---|---|---|
| 1 | * | - | 0%* | - | |
| 2 | ae0-2453.cr10.ber01.lwlcom.net 2a06:d1c0::dead:beef:1c02 | 0.8ms | 0%* | AS59645 | WYBT-NET - Tobias Fiebig, DE |
| 3 | ae0-150.cr10.fra01.lwlcom.net 2a00:c380:b200:230::174 | 10.0ms | 0% | AS50629 | LWLCOM - LWLcom GmbH, DE |
| 4 | ae0-100.cr10.fra02.lwlcom.net 2a00:c380:b200:230::215 | 10.3ms | 0% | AS50629 | LWLCOM - LWLcom GmbH, DE |
| 5 | ae0-10.cr10.fra06.lwlcom.net 2a00:c380:b200:230::236 | 9.9ms | 0% | AS50629 | LWLCOM - LWLcom GmbH, DE |
| 6 | * | - | 10% | - | |
| 7 | * | - | 70% | - | |
| 8 | 2a02:940::1:b1 | 21.1ms | 0% | AS21013 | ITANDTEL-AS - eww ag, AT |
| 9 | 2a03:c680:ffff:ffff::67 | 20.9ms | 0% | AS28919 | STWKUFSTEIN-AS - Stadtwerke Kufstein GmbH, AT |
| 10 | * | - | - | - | |
| 11 | * | - | - | - | |
| 12 | 2a03:c680:f002::2 | 21.5ms | 0% | AS28919 | STWKUFSTEIN-AS - Stadtwerke Kufstein GmbH, AT |
Rate-limited ICMPv6: hop 6, hop 7 (loss between 5% and 95% across mtr cycles - the router replies but only sometimes).
tracepath -6
1?: [LOCALHOST] 0.020ms pmtu 1500
1: xe-0-0-13-178.gw01.ber01.as59645.net 0.410ms
1: xe-0-0-13-178.gw01.ber01.as59645.net 0.590ms
2: ae0-2453.cr10.ber01.lwlcom.net 0.977ms
3: ae0-150.cr10.fra01.lwlcom.net 10.479ms asymm 7
4: ae0-100.cr10.fra02.lwlcom.net 10.586ms asymm 8
5: ae0-10.cr10.fra06.lwlcom.net 10.516ms asymm 7
6: no reply
7: no reply
8: 2a02:940::1:b1 21.091ms asymm 11
9: 2a03:c680:ffff:ffff::67 20.936ms asymm 12
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
Too many hops: pmtu 1500
Resume: pmtu 1500 From DE host (Düsseldorf) openRFC 4890 ✓
filter likely at: (none) · min PMTU on path: 1500
4/4
Echo small (56B) 14.9ms
4/4
Echo 1500B (DF) 11.9ms
yes
Type 1 dest-unreach
-
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 | 0.2ms | 0%* | AS59645 | WYBT-NET - Tobias Fiebig, DE |
| 2 | eth1-0-12-h5594.edge5-dus1.bb.wiit.network 2001:4ba0:92f4:3::1 | 4.7ms | 0% | AS24961 | MYLOC-AS - WIIT AG, DE |
| 3 | * | - | - | - | |
| 4 | lag30.core3-dus1.bb.wiit.network 2001:4ba0:ffe9:109::2 | 0.1ms | 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 | hvt01-muc.as28919.kufnet.at 2001:7f8::70f7:0:1 | 11.3ms | 0% | - | NA |
| 7 | 2a03:c680:ffff:ffff::67 | 11.1ms | 0% | AS28919 | STWKUFSTEIN-AS - Stadtwerke Kufstein GmbH, AT |
| 8 | * | - | - | - | |
| 9 | * | - | - | - | |
| 10 | 2a03:c680:f002::2 | 11.8ms | 0% | AS28919 | STWKUFSTEIN-AS - Stadtwerke Kufstein GmbH, AT |
tracepath -6
1?: [LOCALHOST] 0.017ms pmtu 1500
1: xe-0-0-12-142.gw01.dus01.as59645.net 0.547ms
1: xe-0-0-12-142.gw01.dus01.as59645.net 0.184ms
2: eth1-0-12-h5594.edge5-dus1.bb.wiit.network 6.130ms
3: no reply
4: lag30.core3-dus1.bb.wiit.network 0.260ms
5: lag8.core1-dus-ix.bb.wiit.network 0.398ms
6: hvt01-muc.as28919.kufnet.at 11.358ms asymm 10
7: 2a03:c680:ffff:ffff::67 11.167ms 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
Too many hops: pmtu 1500
Resume: pmtu 1500 From NL host (go6lab) openRFC 4890 ✓
filter likely at: (none) · min PMTU on path: 1500
4/4
Echo small (56B) 41.6ms
4/4
Echo 1500B (DF) 41.0ms
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 | 3.1ms | 0% | AS203993 | GNA-DC1-AS - S.J.M. Steffann, NL |
| 2 | * | - | 0%* | - | |
| 3 | 2a00:1ca8:1::194 | 3.0ms | 0% | AS50673 | Serverius-as - Serverius Holding B.V., NL |
| 4 | 2a03:3f40::10:41 | 2.9ms | 0% | AS50673 | Serverius-as - Serverius Holding B.V., NL |
| 5 | 2001:b28:3ff::1b1b:0:1 | 27.9ms | 40% | AS31500 | GNM-AS - Global Network Management Inc, AG |
| 6 | be6.core4.fra1.he.net 2001:470:0:335::1 | 30.1ms | 10% | AS6939 | HURRICANE - Hurricane Electric LLC, US |
| 7 | be7.core3.ams1.he.net 2001:470:e:74::1 | 27.6ms | - | AS6939 | HURRICANE - Hurricane Electric LLC, US |
| 8 | fra.corou0010.v6.as21013.net 2001:7f8::5215:0:1 | 44.3ms | 90% | - | NA |
| 9 | * | - | 80% | - | |
| 10 | 2a02:940::1:b1 | 41.7ms | 0% | AS21013 | ITANDTEL-AS - eww ag, AT |
| 11 | 2a02:940::1:b1 | 46.2ms | 0% | AS21013 | ITANDTEL-AS - eww ag, AT |
| 12 | 2a03:c680:ffff:ffff::67 | 44.3ms | - | AS28919 | STWKUFSTEIN-AS - Stadtwerke Kufstein GmbH, AT |
| 13 | * | - | - | - | |
| 14 | * | - | 0% | - | |
| 15 | 2a03:c680:f002::2 | 41.6ms | - | AS28919 | STWKUFSTEIN-AS - Stadtwerke Kufstein GmbH, AT |
Rate-limited ICMPv6: hop 5, hop 6, hop 8, hop 9 (loss between 5% and 95% across mtr cycles - the router replies but only sometimes).
tracepath -6
1?: [LOCALHOST] 0.040ms pmtu 1500
1: 2a00:8642:42::2 2.792ms
1: 2a00:8642:42::2 2.198ms
2: no reply
3: 2a00:1ca8:1::194 5.750ms
4: 2a03:3f40::10:41 3.610ms
5: 2001:b28:3ff::1b1b:0:1 32.285ms
6: be2.core1.cph1.he.net 27.257ms asymm 4
7: no reply
8: no reply
9: no reply
10: 2a02:940::1:b1 41.156ms asymm 7
11: 2a03:c680:ffff:ffff::67 40.160ms asymm 8
12: 2a03:c680:ffff:ffff::67 42.958ms asymm 8
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
Too many hops: pmtu 1500
Resume: pmtu 1500 From ITA host (Karsolink) openRFC 4890 ✓
filter likely at: (none) · min PMTU on path: 1500
4/4
Echo small (56B) 50.0ms
3/4
Echo 1500B (DF) 34.0ms
yes
Type 1 dest-unreach
-
TCP responds on
Path (traceroute + mtr + PTR)
| # | IP / PTR | RTT | mtr loss | AS | AS holder |
|---|---|---|---|---|---|
| 1 | * | - | 0%* | - | |
| 2 | * | - | 0%* | - | |
| 3 | * | - | - | - | |
| 4 | * | - | - | - | |
| 5 | be47.core1.mil2.he.net 2001:470:e:69::2 | 12.6ms | 0% | AS6939 | HURRICANE - Hurricane Electric LLC, US |
| 6 | be1.core1.zrh2.he.net 2001:470:e:dd::2 | 14.8ms | 0% | AS6939 | HURRICANE - Hurricane Electric LLC, US |
| 7 | be10.core4.fra1.he.net 2001:470:e:153::1 | 20.4ms | 10% | AS6939 | HURRICANE - Hurricane Electric LLC, US |
| 8 | * | - | - | - | |
| 9 | * | - | - | - | |
| 10 | * | - | - | - | |
| 11 | 2a02:940::1:b1 | 29.9ms | 0% | AS21013 | ITANDTEL-AS - eww ag, AT |
| 12 | 2a03:c680:ffff:ffff::67 | 28.9ms | 0% | AS28919 | STWKUFSTEIN-AS - Stadtwerke Kufstein GmbH, AT |
| 13 | * | - | - | - | |
| 14 | * | - | - | - | |
| 15 | 2a03:c680:f002::2 | 29.7ms | 0% | AS28919 | STWKUFSTEIN-AS - Stadtwerke Kufstein GmbH, AT |
Rate-limited ICMPv6: hop 7 (loss between 5% and 95% across mtr cycles - the router replies but only sometimes).
tracepath -6
1?: [LOCALHOST] 0.037ms pmtu 1500
1: karsolink-01.net.karsolink.com 0.691ms
1: no reply
2: 2a12:d8c0:109f:121::a1 0.672ms
3: no reply
4: no reply
5: be47.core1.mil2.he.net 11.558ms
6: be1.core1.zrh2.he.net 15.500ms
7: be10.core4.fra1.he.net 19.123ms
8: no reply
9: no reply
10: 2a02:940::1:a 22.032ms asymm 7
11: 2a02:940::1:b1 29.731ms asymm 6
12: 2a03:c680:ffff:ffff::67 29.939ms asymm 7
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
Too many hops: pmtu 1500
Resume: pmtu 1500 From SLO host (6connect) openRFC 4890 ✓
filter likely at: (none) · min PMTU on path: 1500
4/4
Echo small (56B) 17.6ms
4/4
Echo 1500B (DF) 17.1ms
yes
Type 1 dest-unreach
-
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 | * | - | 20% | - | |
| 4 | 2a00:ee0:1:15::2 | 1.0ms | 0% | AS5603 | SIOL-NET - Telekom Slovenije, d.d., SI |
| 5 | hvt01-muc.as28919.kufnet.at 2001:7f8::70f7:0:1 | 16.5ms | 0% | - | NA |
| 6 | 2a03:c680:ffff:ffff::67 | 16.6ms | 0% | AS28919 | STWKUFSTEIN-AS - Stadtwerke Kufstein GmbH, AT |
| 7 | * | - | - | - | |
| 8 | * | - | - | - | |
| 9 | 2a03:c680:f002::2 | 46.2ms | 0% | AS28919 | STWKUFSTEIN-AS - Stadtwerke Kufstein GmbH, AT |
Rate-limited ICMPv6: hop 3 (loss between 5% and 95% across mtr cycles - the router replies but only sometimes).
tracepath -6
1?: [LOCALHOST] 0.022ms pmtu 9000
1: fw1-lju.6connect.com 0.846ms
1: fw1-lju.6connect.com 0.550ms
2: no reply
3: 2a00:ee1:800:9::1 2.194ms
4: 2a00:ee0:1:15::2 1.526ms asymm 3
5: 2a00:ee0:1:10::2 1.884ms pmtu 1500
5: hvt01-muc.as28919.kufnet.at 17.482ms asymm 10
6: 2a03:c680:ffff:ffff::67 16.737ms asymm 11
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
Too many hops: pmtu 1500From SLO host (T-2) openRFC 4890 ✓
filter likely at: (none) · min PMTU on path: 1500
4/4
Echo small (56B) 21.7ms
4/4
Echo 1500B (DF) 18.9ms
yes
Type 1 dest-unreach
-
TCP responds on
Path (traceroute + mtr + PTR)
| # | IP / PTR | RTT | mtr loss | AS | AS holder |
|---|---|---|---|---|---|
| 1 | * | - | - | - | |
| 2 | 2a01:260:1::225 | 9.8ms | 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 | 2.1ms | 0%* | AS34779 | T-2-AS - T-2, d.o.o., SI |
| 4 | * | - | 0%* | - | |
| 5 | 100ge0-0-0-31.core1.vie1.he.net 2001:470:0:4a8::1 | 12.5ms | - | AS6939 | HURRICANE - Hurricane Electric LLC, US |
| 6 | 100ge0-0-0-31.core1.vie1.he.net 2001:470:0:4a8::1 | 12.6ms | 0% | AS6939 | HURRICANE - Hurricane Electric LLC, US |
| 7 | * | - | - | - | |
| 8 | 2a02:940::1:b1 | 17.0ms | - | AS21013 | ITANDTEL-AS - eww ag, AT |
| 9 | * | - | 0% | - | |
| 10 | * | - | 0% | - | |
| 11 | * | - | - | - | |
| 12 | * | - | - | - | |
| 13 | 2a03:c680:f002::2 | 18.2ms | 0% | AS28919 | STWKUFSTEIN-AS - Stadtwerke Kufstein GmbH, AT |
tracepath -6
1?: [LOCALHOST] 0.030ms pmtu 1500
1: 2a01:261:313:b814::1 1.789ms
2: 2a01:260:1::225 5.400ms
3: 2a01-260-1-1--9a.core6.t-2.net 3.488ms
4: 2a01-260-1-1--38.core6.t-2.net 2.913ms asymm 3
5: 100ge0-0-0-31.core1.vie1.he.net 10.625ms
6: 100ge0-0-0-31.core1.vie1.he.net 12.865ms asymm 5
7: no reply
8: 2a02:940::1:b1 17.896ms asymm 7
9: 2a03:c680:ffff:ffff::67 17.696ms asymm 8
10: 2a03:c680:ffff:ffff::67 17.679ms asymm 8
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
Too many hops: pmtu 1500
Resume: pmtu 1500