AS1853 - ACONETPI/PARFC 4890 ✓RPKI ✓ 2/2ASPA -

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AS overview

Test target: 2001:62a:4:322::53:3 · ns3ext.univie.ac.at · address space: mixed · prefixes announced: 2

prefix(es): 2001:67c:1864::/48, 2001:628::/29

Targets & per-vantage-point probe results (8 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
2001:628:101:1::135
aco.net
DMARCopenopen-openopen-openopen-openopen-openopen-openopen-openopen-
2001:628:453:4305::53
ns5.univie.ac.at
NS??-??-??-??-??-??-??-
2001:62a:4:24::25:100
zidmx4.univie.ac.at
MX??-??-??-??-??-??-??-
2001:62a:4:25::25:100
zidmx1.univie.ac.at
MX??-??-??-??-??-??-??-
2001:62a:4:25::25:101
zidmx2.univie.ac.at
MX??-??-??-??-??-??-??-
2001:62a:4:25::25:102
zidmx3.univie.ac.at
MX??-??-??-??-??-??-??-
2001:62a:4:321::53:4
ns4ext.univie.ac.at
NS??-??-??-??-??-??-??-
2001:62a:4:322::53:3
ns3ext.univie.ac.at
NS??-??-??-??-??-??-??-

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

VIX / AAIX / SAIX / TIROL-IX / ERA-IX member - Open peering, peering member, since 2010-07-29. IPv6 LAN: 2001:7f8:30:0:1:1:0:1853. Locations: -.

RPKI & ASPA

2 of 2 prefix(es) covered by a valid ROA.

PrefixRPKI stateReasonCovering VRP(s)
2001:67c:1864::/48✓ validmatched VRP (correct origin, length within maxLength)AS1853 /48 maxLen 48 (ripe)
2001:628::/29✓ validmatched VRP (correct origin, length within maxLength)AS1853 /29 maxLen 29 (ripe)

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

We probed 70 arbitrary IPv6 address(es) inside AS1853's announced prefix(es). No router inside the prefix responded. The deepest visible hop was 2a01:4a0:0:2058::16 at hop 11 - that router answers ICMPv6 Echo. This is not in AS1853'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 2026-09-23T13:31:28Z

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 AS1853

From SRB host (SOX, Belgrade)   openRFC 4890 ✓

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

4/4
Echo small (56B) 11.5ms
4/4
Echo 1500B (DF) 11.4ms
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:232a12.6ms10%-
5wien1.aco.net @VIX / AAIX / SAIX / TIROL-IX / ERA-IX
2001:7f8:30:0:1:1:0:1853
13.1ms0%-NA
62001:628:1101:1007::111.4ms0%AS1853ACOnet - ACONET, AT
72001:628:1101:1007::212.0ms0%AS1853ACOnet - ACONET, AT
8*---
9*---
10*---
11*---
12*---
13*---
14*---
15*---
16*---

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

tracepath -6

 1?: [LOCALHOST]                        0.012ms pmtu 1500
 1:  _gateway                                              0.701ms 
 1:  _gateway                                              0.670ms 
 2:  sox-pn.sox.rs                                         0.669ms 
 3:  2001:7f8:1e:8::3d                                     0.708ms asymm  2 
 4:  ae8-930.RT.IRX.VIE.AT.retn.net                       12.923ms asymm  3 
 5:  wien21.aco.net                                       13.266ms asymm  3 
 6:  2001:628:1101:1007::2                                11.768ms asymm  4 
 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
     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) 17.9ms
4/4
Echo 1500B (DF) 18.0ms
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
0.5ms0%*AS59645WYBT-NET - Tobias Fiebig, DE
3ae0-40.cr10.muc02.lwlcom.net
2a00:c380:b200:230::178
11.4ms0%AS50629LWLCOM - LWLcom GmbH, DE
4ae0-10.cr10.muc01.lwlcom.net
2a00:c380:b200:230::177
11.5ms0%AS50629LWLCOM - LWLcom GmbH, DE
5wien1.aco.net @VIX / AAIX / SAIX / TIROL-IX / ERA-IX
2001:7f8:30:0:1:1:0:1853
17.2ms0%-NA
62001:628:1101:1007::117.6ms0%AS1853ACOnet - ACONET, AT
72001:628:1101:1007::218.2ms0%AS1853ACOnet - ACONET, AT
8*-0%-
9*---
10*---
11*---
12*---
13*---
14*---
15*---
16*---

tracepath -6

 1?: [LOCALHOST]                        0.026ms pmtu 1500
 1:  xe-0-0-13-178.gw01.ber01.as59645.net                  0.649ms 
 1:  xe-0-0-13-178.gw01.ber01.as59645.net                  0.527ms 
 2:  ae0-2453.cr10.ber01.lwlcom.net                        0.937ms 
 3:  ae0-40.cr10.muc02.lwlcom.net                         11.757ms 
 4:  ae0-10.cr10.muc01.lwlcom.net                         11.851ms 
 5:  wien1.aco.net                                        17.486ms 
 6:  2001:628:1101:1007::1                                18.704ms 
 7:  2001:628:1101:1007::2                                18.489ms 
 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
     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) 20.7ms
4/4
Echo 1500B (DF) 20.7ms
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
0.1ms0%*AS59645WYBT-NET - Tobias Fiebig, DE
2ae0-101.cr10.dus02.lwlcom.net
2a06:d1c0::dead:beef:1301
0.4ms0%*AS59645WYBT-NET - Tobias Fiebig, DE
3ae0-40.cr10.dus05.lwlcom.net
2a00:c380:b200:230::199
0.4ms0%AS50629LWLCOM - LWLcom GmbH, DE
4ae0-20.cr10.vel01.lwlcom.net
2a00:c380:b200:230::65
1.0ms0%AS50629LWLCOM - LWLcom GmbH, DE
5ae0-10.cr10.dus06.lwlcom.net
2a00:c380:b200:230::147
0.7ms0%AS50629LWLCOM - LWLcom GmbH, DE
6ae0-40.cr10.fra06.lwlcom.net
2a00:c380:b200:230::21
4.4ms0%AS50629LWLCOM - LWLcom GmbH, DE
7ae0-20.cr10.muc01.lwlcom.net
2a00:c380:b200:230::250
14.7ms0%AS50629LWLCOM - LWLcom GmbH, DE
8wien1.aco.net @VIX / AAIX / SAIX / TIROL-IX / ERA-IX
2001:7f8:30:0:1:1:0:1853
20.5ms0%-NA
92001:628:1101:1007::120.9ms10%AS1853ACOnet - ACONET, AT
102001:628:1101:1007::221.6ms0%AS1853ACOnet - ACONET, AT
11*-0%-
12*---
13*---
14*---
15*---
16*---

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

tracepath -6

 1?: [LOCALHOST]                        0.009ms pmtu 1500
 1:  xe-0-0-12-142.gw01.dus01.as59645.net                  0.378ms 
 1:  xe-0-0-12-142.gw01.dus01.as59645.net                  0.239ms 
 2:  ae0-101.cr10.dus02.lwlcom.net                         0.362ms 
 3:  ae0-20.cr10.dus01.lwlcom.net                          0.520ms 
 4:  ae0-90.cr11.dus01.lwlcom.net                          0.508ms 
 5:  ae0-30.cr10.dus06.lwlcom.net                          1.168ms 
 6:  ae0-40.cr10.fra06.lwlcom.net                          3.989ms 
 7:  ae0-20.cr10.muc01.lwlcom.net                         14.790ms asymm  5 
 8:  wien1.aco.net                                        20.351ms asymm  6 
 9:  2001:628:1101:1007::1                                20.869ms asymm  7 
10:  2001:628:1101:1007::2                                21.604ms asymm  8 
11:  no reply
12:  no reply
13:  no reply
14:  no reply
15:  no reply
16:  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) 39.3ms
4/4
Echo 1500B (DF) 41.3ms
no
Type 1 dest-unreach
-
TCP responds on

Path (traceroute + mtr + PTR)

#IP / PTRRTTmtr lossASAS holder
12a00:8642:42::21.2ms0%AS203993GNA-DC1-AS - S.J.M. Steffann, NL
2gw.friends.steffann.nl
2a00:8642:1000:f000::1
2.8ms0%*AS203993GNA-DC1-AS - S.J.M. Steffann, NL
32a00:1ca8:1::1942.7ms0%AS50673Serverius-as - Serverius Holding B.V., NL
42a03:3f40::10:414.9ms0%AS50673Serverius-as - Serverius Holding B.V., NL
52001:b28:3ff::1b1b:0:127.0ms0%AS31500GNM-AS - Global Network Management Inc, AG
6be6.core4.fra1.he.net
2001:470:0:335::1
31.6ms70%AS6939HURRICANE - Hurricane Electric LLC, US
7be8.core1.prg1.he.net
2001:470:e:1e::2
36.2ms0%AS6939HURRICANE - Hurricane Electric LLC, US
8*-30%-
92001:470:2dd::240.8ms0%AS6939HURRICANE - Hurricane Electric LLC, US
102001:628:1101:1007::240.5ms0%AS1853ACOnet - ACONET, AT
11*-0%-
12*---
13*---
14*---
15*---
16*---

Rate-limited ICMPv6: hop 6, hop 8 (loss between 5% and 95% across mtr cycles - the router replies but only sometimes).

tracepath -6

 1?: [LOCALHOST]                        0.058ms pmtu 1500
 1:  2a00:8642:42::2                                       2.774ms 
 1:  2a00:8642:42::2                                       3.410ms 
 2:  gw.friends.steffann.nl                                6.295ms 
 3:  2a00:1ca8:1::194                                      4.186ms 
 4:  2a03:3f40::10:41                                      4.580ms 
 5:  2001:b28:3ff::1b1b:0:1                               29.158ms 
 6:  be9.core4.fra1.he.net                                37.257ms asymm  4 
 7:  be8.core1.prg1.he.net                                37.299ms asymm  5 
 8:  be3.core1.vie1.he.net                                43.128ms asymm  6 
 9:  2001:470:2dd::2                                      39.165ms asymm  7 
10:  2001:628:1101:1007::2                                40.623ms asymm  8 
11:  no reply
12:  no reply
13:  no reply
14:  no reply
15:  no reply
16:  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) 16.4ms
3/4
Echo 1500B (DF) 16.6ms
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
0.3ms-AS204471KARSOLINK - 2S Computers SRL, IT
2*-0%*-
32a12:d8c0:101f:6::19.6ms80%AS204471KARSOLINK - 2S Computers SRL, IT
4*---
5100ge0-0-0-20.core1.vie1.he.net
2001:470:0:414::1
22.9ms50%AS6939HURRICANE - Hurricane Electric LLC, US
62001:470:2dd::215.3ms0%AS6939HURRICANE - Hurricane Electric LLC, US
72001:628:1101:1007::216.4ms0%AS1853ACOnet - ACONET, AT
8*-0%-
9*---
10*---
11*---
12*---
13*---
14*---
15*---
16*---

Rate-limited ICMPv6: hop 3, 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:  no reply
 2:  2a12:d8c0:109f:121::a1                                0.594ms 
 3:  no reply
 4:  no reply
 5:  no reply
 6:  2001:470:2dd::2                                      41.638ms 
 7:  2001:628:1101:1007::2                                44.127ms 
 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
     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) 8.5ms
4/4
Echo 1500B (DF) 8.6ms
no
Type 1 dest-unreach
-
TCP responds on

Path (traceroute + mtr + PTR)

#IP / PTRRTTmtr lossASAS holder
1fw1-lju.6connect.com
2607:fae0:a000::2
1.0ms0%*AS80386CONNECT - 6connect, Inc., US
2ccr-to-fw-ccr1-gw-lju.6connect.com
2607:fae0:a000:2::2
0.8ms-AS80386CONNECT - 6connect, Inc., US
32a00:ee1:800:9::11.8ms-AS5603SIOL-NET - Telekom Slovenije, d.d., SI
42a00:ee0:1:10::21.0ms0%AS5603SIOL-NET - Telekom Slovenije, d.d., SI
52a11:4142:20020.9ms0%-
6r2-vie1-at.as5405.net
2a11:4140::1e
7.1ms0%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
7.0ms0%-NA
8wien1.aco.net @VIX / AAIX / SAIX / TIROL-IX / ERA-IX
2001:7f8:30:0:1:1:0:1853
8.5ms0%-NA
92001:628:1101:1007::28.4ms0%AS1853ACOnet - ACONET, AT
10*-0%-
11*---
12*---
13*---
14*---
15*---
16*---

tracepath -6

 1?: [LOCALHOST]                        0.026ms pmtu 9000
 1:  fw1-lju.6connect.com                                  0.634ms 
 1:  fw1-lju.6connect.com                                  0.690ms 
 2:  no reply
 3:  no reply
 4:  2a00:ee0:1:15::2                                      1.679ms asymm  3 
 5:  2a00:ee0:1:15::2                                      1.615ms pmtu 1500
 5:  2a11:4142:2002::                                      1.218ms asymm  6 
 6:  r2-vie1-at.as5405.net                                 7.412ms asymm  8 
 7:  et9-4096.r2-vie2-at.as5405.net                        7.283ms asymm  8 
 8:  wien1.aco.net                                         8.888ms asymm  4 
 9:  2001:628:1101:1007::1                                 8.335ms asymm  4 
10:  2001:628:1101:1007::2                                 8.987ms asymm  5 
11:  no reply
12:  no reply
13:  no reply
14:  no reply
15:  no reply
16:  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) 9.0ms
4/4
Echo 1500B (DF) 9.5ms
no
Type 1 dest-unreach
-
TCP responds on

Path (traceroute + mtr + PTR)

#IP / PTRRTTmtr lossASAS holder
12a01:261:313:b814::10.4ms-AS34779T-2-AS - T-2, d.o.o., SI
22a01:260:1::2254.5ms0%*AS34779T-2-AS - T-2, d.o.o., SI
32a01-260-1-1--9a.core6.t-2.net
2a01:260:1:1::9a
2.1ms0%*AS34779T-2-AS - T-2, d.o.o., SI
4*-0%*-
5100ge0-0-0-31.core1.vie1.he.net
2001:470:0:4a8::1
11.0ms-AS6939HURRICANE - Hurricane Electric LLC, US
6100ge0-0-0-31.core1.vie1.he.net
2001:470:0:4a8::1
10.8ms10%AS6939HURRICANE - Hurricane Electric LLC, US
72001:628:1101:1007::29.6ms0%AS1853ACOnet - ACONET, AT
82001:628:1101:1007::29.4ms0%AS1853ACOnet - ACONET, AT
9*-0%-
10*---
11*---
12*---
13*---
14*---
15*---
16*---

Rate-limited ICMPv6: hop 6 (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:  2a01:260:1::225                                      18.657ms 
 3:  2a01-260-1-1--9c.core6.t-2.net                        2.941ms 
 4:  2a01-260-1-1--38.core6.t-2.net                        2.190ms asymm  3 
 5:  100ge0-0-0-31.core1.vie1.he.net                      12.970ms 
 6:  100ge0-0-0-31.core1.vie1.he.net                      12.942ms asymm  5 
 7:  2001:628:1101:1007::2                                10.017ms asymm  6 
 8:  2001:628:1101:1007::2                                 9.837ms asymm  6 
 9:  no reply
10:  no reply
11:  no reply
12:  no reply
13:  no reply
14:  no reply
15:  no reply
16:  no reply
     Too many hops: pmtu 1500
     Resume: pmtu 1500