AS51890 - MAYR-MELNHOF MM ServicePI/PARFC 4890 ✓RPKI -ASPA -

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AS overview

Test target: 2a04:85c0::1 · static prefix probe · address space: mixed · prefixes announced: 1

prefix(es): 2a04:85c0::/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
2a04:85c0::1prb??-??-??-??-??-??-??-

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 (T-2) - 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)
2a04:85c0::/29- not-foundno covering VRP

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

At least one router inside AS51890's announced prefix replied during the random-target probe. Hop(s): 2a04:85c0:c00::105. 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 2026-09-23T13:35:29Z

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 AS51890

From SRB host (SOX, Belgrade)   openRFC 4890 ✓

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

4/4
Echo small (56B) 13.4ms
4/4
Echo 1500B (DF) 13.4ms
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::3d0.3ms0%AS13004SOX - Serbian Open Exchange DOO, RS
42a02:2d8:0:a00e:232a12.8ms10%-
5vix-ip6-et-0-1-2-0-r60.inx.vie.at.nextlayer.net @VIX / AAIX / SAIX / TIROL-IX / ERA-IX
2001:7f8:30:0:2:1:0:1764
12.7ms0%-NA
6ip6-ae2-0-r19.uni.vie.nextlayer.net
2a01:190:1764:801a::1
11.6ms0%AS1764NEXTLAYER-AS - Next Layer Telekommunikationsdienstleistungs- und Beratungs GmbH, AT
72a01:190:1703:35::211.6ms0%AS1764NEXTLAYER-AS - Next Layer Telekommunikationsdienstleistungs- und Beratungs GmbH, AT
8*-0%-
9*---
10*---
11*---
12*---
13*---
14*---
15*---
16*---
17*---

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

tracepath -6

 1?: [LOCALHOST]                        0.015ms pmtu 1500
 1:  _gateway                                              0.575ms 
 1:  _gateway                                              0.422ms 
 2:  sox-pn.sox.rs                                         0.652ms 
 3:  2001:7f8:1e:8::3d                                     0.586ms asymm  2 
 4:  ae8-930.RT.IRX.VIE.AT.retn.net                       13.015ms asymm  3 
 5:  vix-ip6-et-0-1-2-0-r60.inx.vie.at.nextlayer.net      11.471ms asymm  3 
 6:  ip6-ae2-0-r19.uni.vie.nextlayer.net                  13.409ms 
 7:  2a01:190:1703:35::2                                  13.530ms asymm  8 
 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
     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) 21.8ms
4/4
Echo 1500B (DF) 21.9ms
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
0.6ms0%*AS59645WYBT-NET - Tobias Fiebig, DE
3ae0-150.cr10.fra01.lwlcom.net
2a00:c380:b200:230::174
10.4ms0%AS50629LWLCOM - LWLcom GmbH, DE
4ae0-100.cr10.fra02.lwlcom.net
2a00:c380:b200:230::215
10.4ms0%AS50629LWLCOM - LWLcom GmbH, DE
5ae0-10.cr10.fra06.lwlcom.net
2a00:c380:b200:230::236
9.9ms0%AS50629LWLCOM - LWLcom GmbH, DE
6nextlayer.peering.cz
2001:7f8:7f::c:31
19.7ms0%-NA
7ip6-ae2-0-r19.uni.vie.nextlayer.net
2a01:190:1764:801a::1
22.9ms0%AS1764NEXTLAYER-AS - Next Layer Telekommunikationsdienstleistungs- und Beratungs GmbH, AT
82a01:190:1703:35::223.1ms0%AS1764NEXTLAYER-AS - Next Layer Telekommunikationsdienstleistungs- und Beratungs GmbH, AT
9*-0%-
10*---
11*---
12*---
13*---
14*---
15*---
16*---
17*---

tracepath -6

 1?: [LOCALHOST]                        0.024ms pmtu 1500
 1:  xe-0-0-13-178.gw01.ber01.as59645.net                  0.523ms 
 1:  xe-0-0-13-178.gw01.ber01.as59645.net                  0.469ms 
 2:  ae0-2453.cr10.ber01.lwlcom.net                        1.209ms 
 3:  ae0-150.cr10.fra01.lwlcom.net                        10.283ms asymm  7 
 4:  ae0-100.cr10.fra02.lwlcom.net                        10.788ms asymm  8 
 5:  ae0-10.cr10.fra06.lwlcom.net                         10.167ms asymm  7 
 6:  nextlayer.peering.cz                                 34.220ms asymm  8 
 7:  ip6-ae2-0-r19.uni.vie.nextlayer.net                  21.657ms asymm 12 
 8:  2a01:190:1703:35::2                                  23.650ms asymm 14 
 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
     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) 16.2ms
4/4
Echo 1500B (DF) 16.3ms
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
0.3ms0%*AS59645WYBT-NET - Tobias Fiebig, DE
3ae0-20.cr10.dus01.lwlcom.net
2a00:c380:b200:230::108
0.5ms0%AS50629LWLCOM - LWLcom GmbH, DE
4ae0-20.cr10.vel01.lwlcom.net
2a00:c380:b200:230::65
1.0ms0%AS50629LWLCOM - LWLcom GmbH, DE
5ae0-30.cr10.dus06.lwlcom.net
2a00:c380:b200:230::36
0.9ms0%AS50629LWLCOM - LWLcom GmbH, DE
6ae0-40.cr10.fra06.lwlcom.net
2a00:c380:b200:230::21
4.0ms0%AS50629LWLCOM - LWLcom GmbH, DE
7nextlayer.peering.cz
2001:7f8:7f::c:31
10.8ms0%-NA
8ip6-ae2-0-r19.uni.vie.nextlayer.net
2a01:190:1764:801a::1
16.7ms0%AS1764NEXTLAYER-AS - Next Layer Telekommunikationsdienstleistungs- und Beratungs GmbH, AT
92a01:190:1703:35::217.1ms0%AS1764NEXTLAYER-AS - Next Layer Telekommunikationsdienstleistungs- und Beratungs GmbH, AT
10*-0%-
11*---
12*---
13*---
14*---
15*---
16*---
17*---

tracepath -6

 1?: [LOCALHOST]                        0.015ms pmtu 1500
 1:  xe-0-0-12-142.gw01.dus01.as59645.net                  0.303ms 
 1:  xe-0-0-12-142.gw01.dus01.as59645.net                  0.274ms 
 2:  ae0-101.cr10.dus02.lwlcom.net                         0.352ms 
 3:  ae0-40.cr10.dus05.lwlcom.net                          0.343ms 
 4:  ae0-20.cr10.vel01.lwlcom.net                          1.282ms 
 5:  ae0-30.cr10.dus06.lwlcom.net                          1.075ms 
 6:  ae0-40.cr10.fra06.lwlcom.net                          4.311ms 
 7:  nextlayer.peering.cz                                 12.024ms 
 8:  ip6-ae1-0-r19.uni.vie.nextlayer.net                  15.900ms asymm 11 
 9:  2a01:190:1703:35::2                                  19.525ms asymm 13 
10:  no reply
11:  no reply
12:  no reply
13:  no reply
14:  no reply
15:  no reply
16:  no reply
17:  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) 39.4ms
4/4
Echo 1500B (DF) 42.7ms
no
Type 1 dest-unreach
-
TCP responds on

Path (traceroute + mtr + PTR)

#IP / PTRRTTmtr lossASAS holder
12a00:8642:42::21.5ms0%AS203993GNA-DC1-AS - S.J.M. Steffann, NL
2gw.friends.steffann.nl
2a00:8642:1000:f000::1
4.9ms0%*AS203993GNA-DC1-AS - S.J.M. Steffann, NL
32a00:1ca8:1::1946.8ms0%AS50673Serverius-as - Serverius Holding B.V., NL
42a03:3f40::10:414.0ms0%AS50673Serverius-as - Serverius Holding B.V., NL
52001:b28:3ff::1b1b:0:130.3ms0%AS31500GNM-AS - Global Network Management Inc, AG
6be2.core1.cph1.he.net
2001:470:e:5f::1
27.8ms0%AS6939HURRICANE - Hurricane Electric LLC, US
7*---
8*-0%-
9ip6-ae2-0-r19.uni.vie.nextlayer.net
2a01:190:1764:801a::1
41.6ms0%AS1764NEXTLAYER-AS - Next Layer Telekommunikationsdienstleistungs- und Beratungs GmbH, AT
102a01:190:1703:35::238.4ms0%AS1764NEXTLAYER-AS - Next Layer Telekommunikationsdienstleistungs- und Beratungs GmbH, AT
112a01:190:1703:35::242.0ms0%AS1764NEXTLAYER-AS - Next Layer Telekommunikationsdienstleistungs- und Beratungs GmbH, AT
12*---
13*---
14*---
15*---
16*---
17*---

tracepath -6

 1?: [LOCALHOST]                        0.038ms pmtu 1500
 1:  2a00:8642:42::2                                       2.972ms 
 1:  2a00:8642:42::2                                       3.106ms 
 2:  gw.friends.steffann.nl                                2.904ms 
 3:  2a00:1ca8:1::194                                      5.674ms 
 4:  2a03:3f40::10:41                                      4.312ms 
 5:  2001:b28:3ff::1b1b:0:1                               29.315ms 
 6:  be2.core1.cph1.he.net                                31.106ms asymm  4 
 7:  no reply
 8:  de-cix.r60.inx.fra.de.nextlayer.net                  43.128ms 
 9:  ams-ix.r06.nikh.ams.nl.nextlayer.net                 45.678ms asymm  8 
10:  ip6-ae2-0-r19.uni.vie.nextlayer.net                  44.855ms 
11:  2a01:190:1703:35::2                                  44.541ms asymm 12 
12:  no reply
13:  no reply
14:  no reply
15:  no reply
16:  no reply
17:  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) 18.9ms
3/4
Echo 1500B (DF) 19.0ms
no
Type 1 dest-unreach
-
TCP responds on

Path (traceroute + mtr + PTR)

#IP / PTRRTTmtr lossASAS holder
1karsolink-01.net.karsolink.com
2a12:d8c0:105a:9001::1
0.3ms0%*AS204471KARSOLINK - 2S Computers SRL, IT
2*-0%*-
3*-90%-
4*---
5be47.core1.mil2.he.net
2001:470:e:69::2
12.4ms0%AS6939HURRICANE - Hurricane Electric LLC, US
6be1.core1.zrh2.he.net
2001:470:e:dd::2
14.8ms0%AS6939HURRICANE - Hurricane Electric LLC, US
7*---
8be1.core3.zrh3.he.net
2001:470:0:7e0::2
14.6ms0%AS6939HURRICANE - Hurricane Electric LLC, US
9*---
10ip6-ae1-0-r19.uni.vie.nextlayer.net
2a01:190:1764:8019::1
18.0ms0%AS1764NEXTLAYER-AS - Next Layer Telekommunikationsdienstleistungs- und Beratungs GmbH, AT
112a01:190:1703:35::218.0ms0%AS1764NEXTLAYER-AS - Next Layer Telekommunikationsdienstleistungs- und Beratungs GmbH, AT
12*-0%-
13*---
14*---
15*---
16*---
17*---

Rate-limited ICMPv6: hop 3 (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:  no reply
 3:  no reply
 4:  no reply
 5:  be47.core1.mil2.he.net                               12.979ms 
 6:  be1.core1.zrh2.he.net                                14.196ms 
 7:  no reply
 8:  be1.core3.zrh3.he.net                                14.625ms 
 9:  no reply
10:  ip6-ae2-0-r19.uni.vie.nextlayer.net                  18.437ms 
11:  2a01:190:1703:35::2                                  19.720ms asymm 12 
12:  no reply
13:  no reply
14:  no reply
15:  no reply
16:  no reply
17:  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) 16.6ms
4/4
Echo 1500B (DF) 16.6ms
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::21.4ms0%AS5603SIOL-NET - Telekom Slovenije, d.d., SI
5de-cix.r60.inx.fra.de.nextlayer.net
2001:7f8::6e4:0:1
15.8ms0%-NA
6ip6-ae1-0-r19.uni.vie.nextlayer.net
2a01:190:1764:8019::1
15.6ms0%AS1764NEXTLAYER-AS - Next Layer Telekommunikationsdienstleistungs- und Beratungs GmbH, AT
72a01:190:1703:35::216.0ms0%AS1764NEXTLAYER-AS - Next Layer Telekommunikationsdienstleistungs- und Beratungs GmbH, AT
8*-0%-
9*---
10*---
11*---
12*---
13*---
14*---
15*---
16*---
17*---

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

tracepath -6

 1?: [LOCALHOST]                        0.019ms pmtu 9000
 1:  fw1-lju.6connect.com                                  0.552ms 
 1:  fw1-lju.6connect.com                                  0.575ms 
 2:  ccr-to-fw-ccr1-gw-lju.6connect.com                    0.759ms 
 3:  no reply
 4:  2a00:ee0:1:15::2                                      1.476ms asymm  3 
 5:  2a00:ee0:1:10::2                                      1.638ms pmtu 1500
 5:  de-cix.r60.inx.fra.de.nextlayer.net                  15.430ms asymm  6 
 6:  ip6-ae2-0-r19.uni.vie.nextlayer.net                  16.498ms asymm  8 
 7:  2a01:190:1703:35::2                                  16.727ms asymm 10 
 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
     Too many hops: pmtu 1500

From SLO host (T-2)   openRFC 4890 ✓

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

4/4
Echo small (56B) 10.5ms
4/4
Echo 1500B (DF) 10.8ms
no
Type 1 dest-unreach
-
TCP responds on

Path (traceroute + mtr + PTR)

#IP / PTRRTTmtr lossASAS holder
1*-0%*-
22a01:260:1::22511.4ms0%*AS34779T-2-AS - T-2, d.o.o., SI
32a01-260-1-1--9a.core6.t-2.net
2a01:260:1:1::9a
1.8ms0%*AS34779T-2-AS - T-2, d.o.o., SI
42a01-260-1-1--38.core6.t-2.net
2a01:260:1:1::38
2.2ms-AS34779T-2-AS - T-2, d.o.o., SI
5*-0%-
6vix-ip6-et-0-1-2-0-r60.inx.vie.at.nextlayer.net @VIX / AAIX / SAIX / TIROL-IX / ERA-IX
2001:7f8:30:0:2:1:0:1764
22.2ms0%-NA
7ip6-ae1-0-r19.uni.vie.nextlayer.net
2a01:190:1764:8019::1
10.5ms0%AS1764NEXTLAYER-AS - Next Layer Telekommunikationsdienstleistungs- und Beratungs GmbH, AT
8ip6-ae2-0-r19.uni.vie.nextlayer.net
2a01:190:1764:801a::1
9.9ms0%AS1764NEXTLAYER-AS - Next Layer Telekommunikationsdienstleistungs- und Beratungs GmbH, AT
92a01:190:1703:35::210.2ms0%AS1764NEXTLAYER-AS - Next Layer Telekommunikationsdienstleistungs- und Beratungs GmbH, AT
10*---
11*---
12*---
13*---
14*---
15*---
16*---
17*---

tracepath -6

 1?: [LOCALHOST]                        0.017ms pmtu 1500
 1:  no reply
 2:  2a01:260:1::225                                       3.007ms 
 3:  2a01-260-1-1--9c.core6.t-2.net                        2.386ms 
 4:  2a01-260-1-1--38.core6.t-2.net                        1.874ms asymm  3 
 5:  100ge0-0-0-31.core1.vie1.he.net                      12.591ms 
 6:  100ge0-0-0-31.core1.vie1.he.net                      11.155ms asymm  5 
 7:  ip6-ae2-0-r19.uni.vie.nextlayer.net                  10.770ms asymm  8 
 8:  ip6-ae1-0-r19.uni.vie.nextlayer.net                   9.912ms 
 9:  2a01:190:1703:35::2                                  10.331ms asymm 10 
10:  no reply
11:  no reply
12:  no reply
13:  no reply
14:  no reply
15:  no reply
16:  no reply
17:  no reply
     Too many hops: pmtu 1500
     Resume: pmtu 1500