AS overview
Test target: 2001:67c:ac:150::251 · mx1.nts.eu · address space: PI · prefixes announced: 1
prefix(es): 2001:67c:ac::/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 | ||
2001:67c:ac:150::250mx2.nts.eu | MX | ✓ | ✓ | ? | ? | - | ✓ | ✓ | ? | ? | - | ✓ | ✓ | ? | ? | - | ✓ | ✓ | ? | ? | - | ✓ | ✓ | ? | ? | - | ✓ | ✓ | ? | ? | - | ✓ | ✓ | ? | ? | - |
2001:67c:ac:150::251mx1.nts.eu | MX | ✓ | ✓ | ? | ? | - | ✓ | ✓ | ? | ? | - | ✓ | ✓ | ? | ? | - | ✓ | ✓ | ? | ? | - | ✓ | ✓ | ? | ? | - | ✓ | ✓ | ? | ? | - | ✓ | ✓ | ? | ? | - |
RPKI & ASPA
1 of 1 prefix(es) covered by a valid ROA.
| Prefix | RPKI state | Reason | Covering VRP(s) |
|---|---|---|---|
2001:67c:ac::/48 | ✓ valid | matched VRP (correct origin, length within maxLength) | AS44329 /48 maxLen 48 (ripe) |
Random-IP probe (yarrp) into the AS' prefixes
We probed 35 arbitrary IPv6 address(es) inside AS44329's announced prefix(es). No router inside the prefix responded. The deepest visible hop was 2a02:940::1:c9 at hop 14 - that router does not answer ICMPv6 Echo. This is not in AS44329'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 2026-09-23T13:32:13Z
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 | 0.2ms | 0%* | AS60733 | PERKE-NET - ZORAN PEROVIC trading as Agencija Perke.NET, RS |
| 2 | sox-pn.sox.rs 2001:7f8:1e:8::3a | 0.4ms | 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 | * | - | 30% | - | |
| 6 | 2a02:940::1000:0:0:12 | 15.1ms | 0% | AS21013 | ITANDTEL-AS - eww ag, AT |
| 7 | 2a02:940::1:c9 | 20.2ms | 0% | AS21013 | ITANDTEL-AS - eww ag, AT |
| 8 | * | - | - | - | |
| 9 | * | - | 0% | - | |
| 10 | * | - | - | - | |
| 11 | * | - | - | - | |
| 12 | * | - | - | - | |
| 13 | * | - | - | - | |
| 14 | * | - | - | - | |
| 15 | * | - | - | - | |
| 16 | * | - | - | - | |
| 17 | * | - | - | - | |
| 18 | * | - | - | - | |
| 19 | * | - | - | - | |
| 20 | * | - | - | - |
Rate-limited ICMPv6: hop 5 (loss between 5% and 95% across mtr cycles - the router replies but only sometimes).
tracepath -6
1?: [LOCALHOST] 0.020ms pmtu 1500
1: _gateway 0.487ms
1: _gateway 0.390ms
2: sox-pn.sox.rs 0.712ms
3: 2001:7f8:1e:8::3d 0.781ms asymm 2
4: ae8-930.RT.IRX.VIE.AT.retn.net 11.373ms asymm 3
5: no reply
6: 2a02:940::1000:0:0:12 16.604ms asymm 4
7: 2a02:940::1:c9 27.280ms asymm 5
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
Too many hops: pmtu 1500
Resume: pmtu 1500 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 | ae3-90.cr10.ham01.lwlcom.net 2a00:c380:b200:230::192 | 4.7ms | 0% | AS50629 | LWLCOM - LWLcom GmbH, DE |
| 4 | ae0-50.cr11.ham01.lwlcom.net 2a00:c380:b200:230::45 | 5.1ms | 0% | AS50629 | LWLCOM - LWLcom GmbH, DE |
| 5 | 2a00:c380:f000::4b | 5.4ms | 0% | AS50629 | LWLCOM - LWLcom GmbH, DE |
| 6 | ae4-2087.dus10.core-backbone.com 2a01:4a0:0:2087::33 | 11.4ms | 0% | AS201011 | CORE-BACKBONE - Core-Backbone GmbH, DE |
| 7 | ae43-2026.fra30.core-backbone.com 2a01:4a0:0:2026::1 | 11.2ms | 0% | AS201011 | CORE-BACKBONE - Core-Backbone GmbH, DE |
| 8 | ae16-2123.fra40.core-backbone.com 2a01:4a0:0:2123::42 | 11.2ms | 0% | AS201011 | CORE-BACKBONE - Core-Backbone GmbH, DE |
| 9 | ae8-2027.muc10.core-backbone.com 2a01:4a0:0:2027::6 | 15.2ms | 0% | AS201011 | CORE-BACKBONE - Core-Backbone GmbH, DE |
| 10 | ae1-2030.muc20.core-backbone.com 2a01:4a0:0:2030::7 | 15.1ms | 0% | AS201011 | CORE-BACKBONE - Core-Backbone GmbH, DE |
| 11 | ae1-2028.vie10.core-backbone.com 2a01:4a0:0:2028::10 | 20.7ms | 0% | AS201011 | CORE-BACKBONE - Core-Backbone GmbH, DE |
| 12 | * | - | - | - | |
| 13 | 2a02:940::1000:0:0:12 | 25.1ms | 0% | AS21013 | ITANDTEL-AS - eww ag, AT |
| 14 | 2a02:940::1:c9 | 30.6ms | 0% | AS21013 | ITANDTEL-AS - eww ag, AT |
| 15 | * | - | - | - | |
| 16 | * | - | 0% | - | |
| 17 | * | - | - | - | |
| 18 | * | - | - | - | |
| 19 | * | - | - | - | |
| 20 | * | - | - | - |
tracepath -6
1?: [LOCALHOST] 0.028ms pmtu 1500
1: xe-0-0-13-178.gw01.ber01.as59645.net 3.453ms
1: xe-0-0-13-178.gw01.ber01.as59645.net 0.773ms
2: ae0-2453.cr10.ber01.lwlcom.net 1.316ms
3: ae3-90.cr10.ham01.lwlcom.net 5.318ms
4: ae0-50.cr11.ham01.lwlcom.net 5.832ms
5: 2a00:c380:f000::4b 7.950ms asymm 4
6: ae4-2087.dus10.core-backbone.com 11.963ms asymm 5
7: ae43-2026.fra30.core-backbone.com 11.414ms asymm 5
8: ae16-2123.fra40.core-backbone.com 11.707ms asymm 6
9: ae8-2027.muc10.core-backbone.com 15.615ms asymm 8
10: ae1-2030.muc20.core-backbone.com 15.732ms asymm 7
11: ae1-2028.vie10.core-backbone.com 21.235ms asymm 8
12: 2a01:4a0:1338:1f0::2 25.450ms asymm 5
13: 2a02:940::1000:0:0:12 25.690ms asymm 6
14: 2a02:940::1:c9 31.257ms asymm 7
15: no reply
16: no reply
17: no reply
18: no reply
19: no reply
20: 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
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 | lag2.core1-dus-ix.bb.wiit.network 2001:4ba0:ffe9:4f::1 | 0.4ms | 0% | AS24961 | MYLOC-AS - WIIT AG, DE |
| 6 | fra.corou0010.v6.as21013.net 2001:7f8::5215:0:1 | 21.3ms | 10% | - | NA |
| 7 | 2a02:940::1:a | 21.2ms | 40% | AS21013 | ITANDTEL-AS - eww ag, AT |
| 8 | * | - | 40% | - | |
| 9 | 2a02:940::1000:0:0:12 | 21.4ms | 0% | AS21013 | ITANDTEL-AS - eww ag, AT |
| 10 | 2a02:940::1:c9 | 27.1ms | 0% | AS21013 | ITANDTEL-AS - eww ag, AT |
| 11 | * | - | - | - | |
| 12 | * | - | 0% | - | |
| 13 | * | - | - | - | |
| 14 | * | - | - | - | |
| 15 | * | - | - | - | |
| 16 | * | - | - | - | |
| 17 | * | - | - | - | |
| 18 | * | - | - | - | |
| 19 | * | - | - | - | |
| 20 | * | - | - | - |
Rate-limited ICMPv6: hop 6, hop 7, hop 8 (loss between 5% and 95% across mtr cycles - the router replies but only sometimes).
tracepath -6
1?: [LOCALHOST] 0.028ms pmtu 1500
1: xe-0-0-12-142.gw01.dus01.as59645.net 0.594ms
1: xe-0-0-12-142.gw01.dus01.as59645.net 0.496ms
2: eth1-0-12-h5594.edge5-dus1.bb.wiit.network 1.361ms
3: no reply
4: lag11.core3-dus1.bb.wiit.network 0.503ms
5: lag8.core1-dus-ix.bb.wiit.network 0.664ms
6: fra.corou0010.v6.as21013.net 21.502ms asymm 7
7: 2a02:940::1:a 21.582ms
8: 2a02:940::1000:0:0:9 21.792ms asymm 6
9: 2a02:940::1000:0:0:12 21.720ms asymm 7
10: 2a02:940::1:c9 27.146ms 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
Too many hops: pmtu 1500
Resume: pmtu 1500 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 | 2.0ms | 0% | AS203993 | GNA-DC1-AS - S.J.M. Steffann, NL |
| 2 | * | - | 0%* | - | |
| 3 | * | - | - | - | |
| 4 | * | - | 10% | - | |
| 5 | * | - | 50% | - | |
| 6 | * | - | - | - | |
| 7 | 2a02:940::1000:0:0:12 | 22.8ms | 0% | AS21013 | ITANDTEL-AS - eww ag, AT |
| 8 | 2a02:940::1:c9 | 31.2ms | 0% | AS21013 | ITANDTEL-AS - eww ag, AT |
| 9 | * | - | - | - | |
| 10 | * | - | 0% | - | |
| 11 | * | - | - | - | |
| 12 | * | - | - | - | |
| 13 | * | - | - | - | |
| 14 | * | - | - | - | |
| 15 | * | - | - | - | |
| 16 | * | - | - | - | |
| 17 | * | - | - | - | |
| 18 | * | - | - | - | |
| 19 | * | - | - | - | |
| 20 | * | - | - | - |
Rate-limited ICMPv6: hop 4, hop 5 (loss between 5% and 95% across mtr cycles - the router replies but only sometimes).
tracepath -6
1?: [LOCALHOST] 0.034ms pmtu 1500
1: 2a00:8642:42::2 4.390ms
1: 2a00:8642:42::2 2.116ms
2: no reply
3: no reply
4: no reply
5: no reply
6: no reply
7: 2a02:940::1000:0:0:12 24.412ms asymm 8
8: 2a02:940::1:c9 30.677ms asymm 9
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
Too many hops: pmtu 1500
Resume: pmtu 1500 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 | * | - | - | - | |
| 4 | * | - | 0% | - | |
| 5 | be47.core1.mil2.he.net 2001:470:e:69::2 | 12.2ms | 0% | AS6939 | HURRICANE - Hurricane Electric LLC, US |
| 6 | be1.core1.zrh2.he.net 2001:470:e:dd::2 | 14.9ms | 20% | AS6939 | HURRICANE - Hurricane Electric LLC, US |
| 7 | be10.core4.fra1.he.net 2001:470:e:153::1 | 20.9ms | 0% | AS6939 | HURRICANE - Hurricane Electric LLC, US |
| 8 | * | - | 30% | - | |
| 9 | * | - | 40% | - | |
| 10 | 2a02:940::1000:0:0:12 | 23.0ms | 0% | AS21013 | ITANDTEL-AS - eww ag, AT |
| 11 | * | - | 0% | - | |
| 12 | 2a02:940::1000:0:0:12 | 22.4ms | - | AS21013 | ITANDTEL-AS - eww ag, AT |
| 13 | 2a02:940::1:c9 | 27.0ms | 0% | AS21013 | ITANDTEL-AS - eww ag, AT |
| 14 | * | - | - | - | |
| 15 | * | - | - | - | |
| 16 | * | - | - | - | |
| 17 | * | - | - | - | |
| 18 | * | - | - | - | |
| 19 | * | - | - | - | |
| 20 | * | - | - | - |
Rate-limited ICMPv6: hop 6, hop 8, hop 9 (loss between 5% and 95% across mtr cycles - the router replies but only sometimes).
tracepath -6
1?: [LOCALHOST] 0.030ms pmtu 1500
1: no reply
2: no reply
3: no reply
4: no reply
5: be47.core1.mil2.he.net 12.044ms
6: be1.core1.zrh2.he.net 17.207ms
7: be10.core4.fra1.he.net 20.100ms
8: no reply
9: no reply
10: no reply
11: 2a02:940::1:c9 28.974ms asymm 8
12: 2a02:940::1000:0:0:12 22.516ms asymm 7
13: 2a02:940::1:c9 28.129ms asymm 8
14: no reply
15: no reply
16: no reply
17: no reply
18: no reply
19: no reply
20: 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
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 | * | - | 0%* | - | |
| 3 | * | - | - | - | |
| 4 | 2a00:ee0:1:15::2 | 1.4ms | 0% | AS5603 | SIOL-NET - Telekom Slovenije, d.d., SI |
| 5 | * | - | - | - | |
| 6 | * | - | - | - | |
| 7 | * | - | 30% | - | |
| 8 | 2a02:940::1000:0:0:12 | 16.7ms | 0% | AS21013 | ITANDTEL-AS - eww ag, AT |
| 9 | 2a02:940::1:c9 | 22.9ms | 0% | AS21013 | ITANDTEL-AS - eww ag, AT |
| 10 | * | - | - | - | |
| 11 | * | - | 0% | - | |
| 12 | * | - | - | - | |
| 13 | * | - | - | - | |
| 14 | * | - | - | - | |
| 15 | * | - | - | - | |
| 16 | * | - | - | - | |
| 17 | * | - | - | - | |
| 18 | * | - | - | - | |
| 19 | * | - | - | - | |
| 20 | * | - | - | - |
Rate-limited ICMPv6: hop 7 (loss between 5% and 95% across mtr cycles - the router replies but only sometimes).
tracepath -6
1?: [LOCALHOST] 0.026ms pmtu 9000
1: fw1-lju.6connect.com 0.542ms
1: fw1-lju.6connect.com 0.757ms
2: no reply
3: no reply
4: 2a00:ee0:1:10::2 1.548ms asymm 3
5: 2a00:ee0:1:10::2 1.772ms pmtu 1500
5: fra.corou0010.v6.as21013.net 16.738ms
6: 2a02:940::1:a 16.666ms asymm 5
7: 2a02:940::1000:0:0:9 16.673ms asymm 4
8: 2a02:940::1000:0:0:12 16.690ms asymm 6
9: 2a02:940::1:c9 23.065ms asymm 6
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
Too many hops: pmtu 1500From 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 | 3.0ms | 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 | 3.0ms | 0%* | AS34779 | T-2-AS - T-2, d.o.o., SI |
| 4 | 2a01-260-1-1--38.core6.t-2.net 2a01:260:1:1::38 | 2.8ms | - | AS34779 | T-2-AS - T-2, d.o.o., SI |
| 5 | * | - | 50% | - | |
| 6 | 100ge0-0-0-31.core1.vie1.he.net 2001:470:0:4a8::1 | 11.4ms | - | AS6939 | HURRICANE - Hurricane Electric LLC, US |
| 7 | * | - | 0% | - | |
| 8 | 2a02:940::1:c9 | 19.0ms | 0% | AS21013 | ITANDTEL-AS - eww ag, AT |
| 9 | 2a02:940::1:c9 | 18.8ms | - | AS21013 | ITANDTEL-AS - eww ag, AT |
| 10 | * | - | 0% | - | |
| 11 | * | - | - | - | |
| 12 | * | - | - | - | |
| 13 | * | - | - | - | |
| 14 | * | - | - | - | |
| 15 | * | - | - | - | |
| 16 | * | - | - | - | |
| 17 | * | - | - | - | |
| 18 | * | - | - | - | |
| 19 | * | - | - | - | |
| 20 | * | - | - | - |
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: 2a01:261:313:b814::1 1.048ms
1: 2a01:261:313:b814::1 0.984ms
2: 2a01:260:1::225 8.273ms
3: 2a01-260-1-1--9c.core6.t-2.net 3.265ms
4: no reply
5: 100ge0-0-0-31.core1.vie1.he.net 12.142ms
6: 100ge0-0-0-31.core1.vie1.he.net 12.195ms asymm 5
7: 2a02:940::1000:0:0:12 13.241ms asymm 6
8: 2a02:940::1000:0:0:12 13.300ms asymm 6
9: 2a02:940::1:c9 20.174ms asymm 7
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
Too many hops: pmtu 1500
Resume: pmtu 1500