AS207962 - AS5586 Kroell BernhardRFC 4890 ✓RPKI -ASPA -

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AS overview

Test target: 2a12:e500:1::b · ns2.giganet.at · address space: unknown · prefixes announced: 1

prefix(es): 2a12:e500::/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 / hostnameSourceSRB host (SOX, Belgrade)DE host (Berlin)DE host (Düsseldorf)NL host (go6lab)ITA host (Karsolink)SLO host (6connect)SLO host (T-2)
ping1500B:80:443reachedping1500B:80:443reachedping1500B:80:443reachedping1500B:80:443reachedping1500B:80:443reachedping1500B:80:443reachedping1500B:80:443reached
2a12:e500:1::b
ns2.giganet.at
NS✓✓??-✓✓??-✓✓??-✓✓??-✓✓??-✓✓??-✓✓??-

VIX / AAIX / SAIX / TIROL-IX / ERA-IX peering

Not an VIX / AAIX / SAIX / TIROL-IX / ERA-IX member, but our traceroute path crosses the VIX / AAIX / SAIX / TIROL-IX / ERA-IX LAN from SRB host (SOX, Belgrade), SLO host (6connect) - reached via an VIX / AAIX / SAIX / TIROL-IX / ERA-IX-resident transit operator.

RPKI & ASPA

0 of 1 prefix(es) covered by a valid ROA, 1 not-found.

PrefixRPKI stateReasonCovering VRP(s)
2a12:e500::/29- not-foundno covering VRP

Random-IP probe (yarrp) into the AS' prefixes

We probed 35 arbitrary IPv6 address(es) inside AS207962's announced prefix(es). No router inside the prefix responded. The deepest visible hop was 2001:938:affe::25:2 at hop 21 - that router answers ICMPv6 Echo. This is not in AS207962'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 2026-09-24T13:34:31Z

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 ↗

multi-vantage path diagram for AS207962

From SRB host (SOX, Belgrade)   openRFC 4890 ✓

filter likely at: (none) · min PMTU on path: 1500

4/4
Echo small (56B) 24.7ms
4/4
Echo 1500B (DF) 24.6ms
no
Type 1 dest-unreach
-
TCP responds on

Path (traceroute + mtr + PTR)

#IP / PTRRTTmtr lossASAS holder
12a09:ab81::10.4ms0%*AS60733PERKE-NET - ZORAN PEROVIC trading as Agencija Perke.NET, RS
2sox-pn.sox.rs
2001:7f8:1e:8::3a
0.2ms0%AS13004SOX - Serbian Open Exchange DOO, RS
32001:7f8:1e:8::3d0.4ms0%AS13004SOX - Serbian Open Exchange DOO, RS
42a02:2d8:0:a00e:232a11.1ms30%-
52001:7f8:30:0:2:1:2:5255 @VIX / AAIX / SAIX / TIROL-IX / ERA-IX13.7ms0%-NA
6*---
72001:938:affe::25:224.2ms0%AS8437UTA-AS - Hutchison Drei Austria GmbH, AT
8*-0%-
9*---
10*---
11*---
12*---
13*---
14*---
15*---
16*---
17*---
18*---
19*---
20*---
21*---

Rate-limited ICMPv6: hop 4 (loss between 5% and 95% across mtr cycles - the router replies but only sometimes).

tracepath -6

 1?: [LOCALHOST]                        0.011ms pmtu 1500
 1:  _gateway                                              0.578ms 
 1:  _gateway                                              0.362ms 
 2:  sox-pn.sox.rs                                         0.422ms 
 3:  2001:7f8:1e:8::3d                                     0.757ms asymm  2 
 4:  ae8-930.RT.IRX.VIE.AT.retn.net                       27.149ms asymm  3 
 5:  2001:7f8:30:0:2:1:2:5255                             12.235ms asymm  3 
 6:  2001:938:2::2:2                                      15.482ms asymm  4 
 7:  2001:938:affe::25:2                                  22.876ms 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
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) 28.4ms
4/4
Echo 1500B (DF) 28.5ms
no
Type 1 dest-unreach
-
TCP responds on

Path (traceroute + mtr + PTR)

#IP / PTRRTTmtr lossASAS holder
1xe-0-0-13-178.gw01.ber01.as59645.net
2a06:d1c1:100:b::1
0.3ms0%*AS59645WYBT-NET - Tobias Fiebig, DE
2ae0-2453.cr10.ber01.lwlcom.net
2a06:d1c0::dead:beef:1c02
0.7ms0%*AS59645WYBT-NET - Tobias Fiebig, DE
3ae0-40.cr10.muc02.lwlcom.net
2a00:c380:b200:230::178
11.2ms0%AS50629LWLCOM - LWLcom GmbH, DE
4ae0-10.cr10.muc01.lwlcom.net
2a00:c380:b200:230::177
11.4ms0%AS50629LWLCOM - LWLcom GmbH, DE
5*---
62001:938:2::2:218.7ms0%AS8437UTA-AS - Hutchison Drei Austria GmbH, AT
72001:938:affe::25:228.0ms0%AS8437UTA-AS - Hutchison Drei Austria GmbH, AT
8*-0%-
9*---
10*---
11*---
12*---
13*---
14*---
15*---
16*---
17*---
18*---
19*---
20*---
21*---

tracepath -6

 1?: [LOCALHOST]                        0.027ms pmtu 1500
 1:  xe-0-0-13-178.gw01.ber01.as59645.net                  0.563ms 
 1:  xe-0-0-13-178.gw01.ber01.as59645.net                  0.514ms 
 2:  ae0-2453.cr10.ber01.lwlcom.net                        0.875ms 
 3:  ae0-40.cr10.muc02.lwlcom.net                         11.526ms 
 4:  ae0-10.cr10.muc01.lwlcom.net                         11.948ms 
 5:  no reply
 6:  2001:938:2::2:2                                      19.028ms asymm 11 
 7:  2001:938:affe::25:2                                  28.214ms asymm 12 
 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 DE host (Düsseldorf)   openRFC 4890 ✓

filter likely at: (none) · min PMTU on path: 1500

4/4
Echo small (56B) 31.8ms
4/4
Echo 1500B (DF) 31.8ms
no
Type 1 dest-unreach
-
TCP responds on

Path (traceroute + mtr + PTR)

#IP / PTRRTTmtr lossASAS holder
1xe-0-0-12-142.gw01.dus01.as59645.net
2a06:d1c1:100:d::1
0.2ms0%*AS59645WYBT-NET - Tobias Fiebig, DE
2ae0-101.cr10.dus02.lwlcom.net
2a06:d1c0::dead:beef:1301
0.5ms0%*AS59645WYBT-NET - Tobias Fiebig, DE
3ae0-40.cr10.dus05.lwlcom.net
2a00:c380:b200:230::199
0.2ms0%AS50629LWLCOM - LWLcom GmbH, DE
4ae0-90.cr11.dus01.lwlcom.net
2a00:c380:b200:230::222
0.7ms0%AS50629LWLCOM - LWLcom GmbH, DE
5ae0-30.cr10.dus06.lwlcom.net
2a00:c380:b200:230::36
1.2ms0%AS50629LWLCOM - LWLcom GmbH, DE
6ae0-40.cr10.fra06.lwlcom.net
2a00:c380:b200:230::21
4.5ms0%AS50629LWLCOM - LWLcom GmbH, DE
7ae0-20.cr10.muc01.lwlcom.net
2a00:c380:b200:230::250
14.4ms0%AS50629LWLCOM - LWLcom GmbH, DE
8*---
9*-30%-
102001:938:affe::25:231.2ms0%AS8437UTA-AS - Hutchison Drei Austria GmbH, AT
11*-0%-
12*---
13*---
14*---
15*---
16*---
17*---
18*---
19*---
20*---
21*---

Rate-limited ICMPv6: hop 9 (loss between 5% and 95% across mtr cycles - the router replies but only sometimes).

tracepath -6

 1?: [LOCALHOST]                        0.015ms pmtu 1500
 1:  xe-0-0-12-142.gw01.dus01.as59645.net                  0.397ms 
 1:  xe-0-0-12-142.gw01.dus01.as59645.net                  0.255ms 
 2:  ae0-101.cr10.dus02.lwlcom.net                         0.370ms 
 3:  ae0-20.cr10.dus01.lwlcom.net                          0.583ms 
 4:  ae0-20.cr10.vel01.lwlcom.net                          1.169ms 
 5:  ae0-30.cr10.dus06.lwlcom.net                          1.265ms 
 6:  ae0-40.cr10.fra06.lwlcom.net                          4.552ms 
 7:  ae0-20.cr10.muc01.lwlcom.net                         14.362ms asymm  5 
 8:  no reply
 9:  2001:938:2::2:2                                      21.831ms asymm 12 
10:  2001:938:affe::25:2                                  31.106ms asymm 13 
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) 33.6ms
4/4
Echo 1500B (DF) 33.5ms
no
Type 1 dest-unreach
-
TCP responds on

Path (traceroute + mtr + PTR)

#IP / PTRRTTmtr lossASAS holder
12a00:8642:42::21.0ms0%AS203993GNA-DC1-AS - S.J.M. Steffann, NL
2*-0%*-
32a00:1ca8:1::1943.9ms0%AS50673Serverius-as - Serverius Holding B.V., NL
42a03:3f40::10:413.4ms0%AS50673Serverius-as - Serverius Holding B.V., NL
5*-30%-
6*-80%-
7*-0%-
82001:850:501:118::222.8ms0%AS8447A1TELEKOM-AT - A1 Telekom Austria AG, AT
92001:938:3::10d:225.1ms20%AS8437UTA-AS - Hutchison Drei Austria GmbH, AT
102001:938:3::c3:227.3ms0%AS8437UTA-AS - Hutchison Drei Austria GmbH, AT
112001:938:affe::25:235.0ms0%AS8437UTA-AS - Hutchison Drei Austria GmbH, AT
12*-0%-
13*---
14*---
15*---
16*---
17*---
18*---
19*---
20*---
21*---

Rate-limited ICMPv6: hop 5, hop 6, hop 9 (loss between 5% and 95% across mtr cycles - the router replies but only sometimes).

tracepath -6

 1?: [LOCALHOST]                        0.050ms pmtu 1500
 1:  2a00:8642:42::2                                       9.751ms 
 1:  2a00:8642:42::2                                       1.698ms 
 2:  gw.friends.steffann.nl                                3.860ms 
 3:  2a00:1ca8:1::194                                     16.082ms 
 4:  2a03:3f40::10:41                                     20.430ms 
 5:  no reply
 6:  no reply
 7:  no reply
 8:  2001:850:501:118::2                                  23.131ms asymm 13 
 9:  2001:938:3::10d:2                                    24.453ms asymm 14 
10:  2001:938:3::c3:2                                     23.734ms asymm 13 
11:  2001:938:affe::25:2                                  33.863ms asymm 14 
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 ITA host (Karsolink)   openRFC 4890 ✓

filter likely at: (none) · min PMTU on path: 1500

4/4
Echo small (56B) 31.3ms
4/4
Echo 1500B (DF) 31.4ms
no
Type 1 dest-unreach
-
TCP responds on

Path (traceroute + mtr + PTR)

#IP / PTRRTTmtr lossASAS holder
1*-0%*-
2*-0%*-
32a12:d8c0:101f:6::19.7ms0%AS204471KARSOLINK - 2S Computers SRL, IT
4*---
5be47.core1.mil2.he.net
2001:470:e:69::2
11.7ms0%AS6939HURRICANE - Hurricane Electric LLC, US
6be1.core1.zrh2.he.net
2001:470:e:dd::2
14.6ms0%AS6939HURRICANE - Hurricane Electric LLC, US
7*---
8be1.core3.zrh3.he.net
2001:470:0:7e0::2
15.4ms0%AS6939HURRICANE - Hurricane Electric LLC, US
9*---
10ip6-ae1-0-r32.inx.vie.nextlayer.net
2a01:190:1764:800c::1
20.4ms0%AS1764NEXTLAYER-AS - Next Layer Telekommunikationsdienstleistungs- und Beratungs GmbH, AT
11*---
122001:850:501:118::220.7ms0%AS8447A1TELEKOM-AT - A1 Telekom Austria AG, AT
132001:938:3::10d:222.5ms0%AS8437UTA-AS - Hutchison Drei Austria GmbH, AT
142001:938:3::c3:221.9ms0%AS8437UTA-AS - Hutchison Drei Austria GmbH, AT
152001:938:affe::25:231.0ms0%AS8437UTA-AS - Hutchison Drei Austria GmbH, AT
16*-0%-
17*---
18*---
19*---
20*---
21*---

tracepath -6

 1?: [LOCALHOST]                        0.019ms pmtu 1500
 1:  karsolink-01.net.karsolink.com                        0.813ms 
 2:  2a12:d8c0:109f:121::a1                                1.072ms 
 3:  2a12:d8c0:101f:103::1                                 8.920ms 
 4:  no reply
 5:  be47.core1.mil2.he.net                               12.529ms 
 6:  be1.core1.zrh2.he.net                                15.404ms 
 7:  no reply
 8:  be1.core3.zrh3.he.net                                16.742ms 
 9:  no reply
10:  ip6-ae2-0-r32.inx.vie.nextlayer.net                  20.741ms asymm 11 
11:  no reply
12:  2001:850:501:118::2                                  20.974ms asymm  7 
13:  2001:938:3::10d:2                                    23.191ms asymm  8 
14:  2001:938:3::c3:2                                     23.068ms asymm  7 
15:  2001:938:affe::25:2                                  31.532ms asymm  8 
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) 19.4ms
4/4
Echo 1500B (DF) 19.5ms
no
Type 1 dest-unreach
-
TCP responds on

Path (traceroute + mtr + PTR)

#IP / PTRRTTmtr lossASAS holder
1fw1-lju.6connect.com
2607:fae0:a000::2
0.4ms0%*AS80386CONNECT - 6connect, Inc., US
2*-0%*-
3*-20%-
42a00:ee0:1:10::21.3ms0%AS5603SIOL-NET - Telekom Slovenije, d.d., SI
52a11:4142:20020.9ms0%-
6r2-vie1-at.as5405.net
2a11:4140::1e
7.2ms0%AS5405INTERDOTLINK - Inter.link GmbH, DE
7et9-4096.r2-vie2-at.as5405.net @VIX / AAIX / SAIX / TIROL-IX / ERA-IX
2001:7f8:30:0:3:1:2:5291
7.2ms0%-NA
82001:7f8:30:0:2:1:2:5255 @VIX / AAIX / SAIX / TIROL-IX / ERA-IX9.2ms0%-NA
9*-0%-
102001:938:affe::25:220.3ms0%AS8437UTA-AS - Hutchison Drei Austria GmbH, AT
11*-10%-
12*---
13*---
14*---
15*---
16*---
17*---
18*---
19*---
20*---
21*---

Rate-limited ICMPv6: hop 3, hop 11 (loss between 5% and 95% across mtr cycles - the router replies but only sometimes).

tracepath -6

 1?: [LOCALHOST]                        0.020ms pmtu 9000
 1:  fw1-lju.6connect.com                                  0.697ms 
 1:  fw1-lju.6connect.com                                  0.554ms 
 2:  no reply
 3:  no reply
 4:  2a00:ee0:1:15::2                                      1.559ms asymm  3 
 5:  2a00:ee0:1:15::2                                      1.663ms pmtu 1500
 5:  2a11:4142:2002::                                      1.118ms asymm  6 
 6:  r2-vie1-at.as5405.net                                 7.376ms asymm  8 
 7:  et9-4096.r2-vie2-at.as5405.net                        7.562ms asymm  8 
 8:  2001:7f8:30:0:2:1:2:5255                              9.824ms asymm  5 
 9:  2001:938:2::2:2                                       9.907ms asymm  5 
10:  no reply
11:  no reply
10:  2001:938:affe::25:2                                 5565.033ms asymm  7 
13:  no reply
14:  no reply
14:  2001:938:affe::25:2                                 1686.300ms !H
     Resume: pmtu 1500 

From SLO host (T-2)   openRFC 4890 ✓

filter likely at: (none) · min PMTU on path: 1500

4/4
Echo small (56B) 20.8ms
4/4
Echo 1500B (DF) 21.0ms
no
Type 1 dest-unreach
-
TCP responds on

Path (traceroute + mtr + PTR)

#IP / PTRRTTmtr lossASAS holder
1*-0%*-
22a01:260:1::2252.0ms0%*AS34779T-2-AS - T-2, d.o.o., SI
32a01-260-1-1--9c.core6.t-2.net
2a01:260:1:1::9c
2.1ms0%*AS34779T-2-AS - T-2, d.o.o., SI
42a01-260-1-1--c.core6.t-2.net
2a01:260:1:1::c
3.5ms0%*AS34779T-2-AS - T-2, d.o.o., SI
52a01-260-1-1--2a.core6.t-2.net
2a01:260:1:1::2a
4.0ms0%*AS34779T-2-AS - T-2, d.o.o., SI
6*-0%-
72001:938:affe::25:219.4ms10%AS8437UTA-AS - Hutchison Drei Austria GmbH, AT
82001:938:affe::25:219.5ms0%AS8437UTA-AS - Hutchison Drei Austria GmbH, AT
9*-0%-
10*---
11*---
12*---
13*---
14*---
15*---
16*---
17*---
18*---
19*---
20*---
21*---

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                                  0.876ms 
 1:  no reply
 2:  2a01:260:1::225                                       4.210ms 
 3:  2a01-260-1-1--9a.core6.t-2.net                        2.314ms 
 4:  2a01-260-1-1--25.core6.t-2.net                        5.665ms 
 5:  2a01-260-1-1--2a.core6.t-2.net                        4.359ms asymm  4 
 6:  2001:938:2::2:2                                      10.915ms asymm  8 
 7:  2001:938:2::2:2                                      11.529ms asymm  8 
 8:  2001:938:affe::25:2                                  19.642ms 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
21:  no reply
     Too many hops: pmtu 1500
     Resume: pmtu 1500