AS51184 - FONIRA Fonira TelekomPI/PARFC 4890 ✓RPKI ✓ 5/5ASPA -

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AS overview

Test target: 2a02:1748:0:1500:3::3211 · hosting.mediainvent.com · address space: mixed · prefixes announced: 5

prefix(es): 2a0c:ad40::/29, 2a06:d500::/29, 2a06:d180::/29, 2a02:1748::/32, 2001:1b98::/32

Targets & per-vantage-point probe results (6 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
2a02:1748:0:1500:3::3211
hosting.mediainvent.com		NS✓✓openopen✓✓✓openopen✓✓✓openopen✓✓✓openopen✓✓✓openopen✓✓✓openopen✓✓✓openopen✓
2a02:1748:0:1500:3::3237
mediainvent.com		whois✓✓openopen✓✓✓openopen✓✓✓openopen✓✓✓openopen✓✓✓openopen✓✓✓openopen✓✓✓openopen✓
2a02:1748:0:1500:3::5022
hosting3.mediainvent.com		NS✓✓refusedrefused✓✓✓refusedrefused✓✓✓refusedrefused✓✓✓?refused✓✓✓refusedrefused✓✓✓refusedrefused✓✓✓refusedrefused✓
2a02:1748:0:1500:5::3200
mail.mediainvent.at		MX✓✓openopen✓✓✓openopen✓✓✓openopen✓✓✓openopen✓✓✓openopen✓✓✓openopen✓✓✓openopen-
2a02:1748:0:1500:9::9005
files.fonira.at		drv✓✓openopen✓✓✓openopen✓✓✓openopen✓✓✓openopen✓✓✓openopen✓✓✓openopen✓✓✓openopen✓
2a02:1748:f064:160::167
lg.fonira.net		drv✓✓openopen✓✓✓openopen✓✓✓openopen✓✓✓openopen✓✓✓openopen✓✓✓openopen✓✓✓openopen✓

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

VIX / AAIX / SAIX / TIROL-IX / ERA-IX member - Open peering, peering member, since 2016-04-18. IPv6 LAN: 2001:7f8:30:0:2:1:5:1184. Locations: -.

RPKI & ASPA

5 of 5 prefix(es) covered by a valid ROA.

PrefixRPKI stateReasonCovering VRP(s)
2a0c:ad40::/29✓ validmatched VRP (correct origin, length within maxLength)AS51184 /29 maxLen 48 (ripe)
2a06:d500::/29✓ validmatched VRP (correct origin, length within maxLength)AS51184 /29 maxLen 48 (ripe)
2a06:d180::/29✓ validmatched VRP (correct origin, length within maxLength)AS51184 /29 maxLen 48 (ripe); AS57738 /29 maxLen 48 (ripe)
2a02:1748::/32✓ validmatched VRP (correct origin, length within maxLength)AS51184 /32 maxLen 48 (ripe)
2001:1b98::/32✓ validmatched VRP (correct origin, length within maxLength)AS51184 /32 maxLen 48 (ripe)

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

We probed 70 arbitrary IPv6 address(es) inside AS51184's announced prefix(es). No router inside the prefix responded. The deepest visible hop was 2a02:1b8::49:1 at hop 13 - that router answers ICMPv6 Echo. This is not in AS51184'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 2026-09-22T13:53:05Z

Where the path divergence is

Per-vantage probe + verdict (headline):

Full per-method matrix (all four methods run at each vantage):

vantageicmp6-echodns-tcptlshttp
belgradehonoredno_tcppartialinconclusive
berlinhonoredno_tcpnot_honoredinconclusive
duseldorfhonoredno_tcppartialinconclusive
go6labhonoredno_tcpnot_honoredinconclusive
karsolinkhonoredno_tcpnot_honoredinconclusive
odinhonoredno_tcpnot_honoredinconclusive
t2honoredno_tcpnot_honoredinconclusive

✓ All vantages agree on method(s): icmp6-echo - the headline-method spread above is dispatcher noise, not a real Type 2 disagreement.

These vantage-level disagreements are rooted somewhere in the forward paths. Joining each per-vantage traceroute against the IP→AS lookup from our global yarrp mesh, the first hop where the paths land in different ASes is the most likely site of the offending filter / unreachable AS / Type 2 drop.

Suspect transit ASes (ranked by how often they appear at the divergence point on the path of the worse-classifying vantage): AS51184, AS201011.

Diagnosis is path-level, not packet-level: it tells you which transit AS is the prime suspect, not exactly which firewall rule is to blame. Use the tracepath6 output below (when available) for per-hop PMTU evidence on the same path.

✨ Diagnostic interpretation

An operator-targeted diagnostic interpretation can be generated for this AS on demand. The pipeline holds the raw verdicts and the per-hop walk; an AI pass synthesises where to start looking. Click the button below to run it.

tracepath6 per-hop PMTU drilldown

For each target where Type 2 verdicts disagreed across vantages, tracepath -6 ran from every vantage to capture per-hop PMTU evolution along that vantage's actual forward path. A pmtu change entry on a hop means that hop's router generated a PTB and we observed the shrink; absence of any change combined with a not_honored verdict suggests a router somewhere downstream is silently dropping >MTU packets (an RFC 4890 violation) rather than sending a PTB.

Target 2a02:1748:0:1500:5::3200

amsterdam - verdict ?

(no hops captured)

belgrade - verdict honored

verdict = honored; final pmtu = 1500

#hop IPpmtu change
1<span class='muted'>no reply</span>
22001:7f8:1e:8::3a
32001:7f8:1e:8::3d
42a02:2d8:0:a00e:232a::
52001:7f8:30:0:2:1:5:1184
62a02:1748::100:126:0:246
72a02:1748::100:126:0:255
82a02:1748::100:126:0:252
92a02:1748:0:1500:5::3200
berlin - verdict honored

verdict = honored; final pmtu = 1500

#hop IPpmtu change
1<span class='muted'>no reply</span>
22a06:d1c0::dead:beef:1c02
32a00:c380:b200:230::192
42a00:c380:b200:230::45
52a00:c380:f000::4b
62a01:4a0:0:2087::33
72a01:4a0:0:2071::4
82a01:4a0:0:2021::4
92a01:4a0:0:2003::2
102a01:4a0:0:2032::7
112a01:4a0:0:2028::10
122a01:4a0:1338:218::2
132a02:1b8::49:1
142a02:1b8:10:6::242
152a02:1748::100:126:0:246
162a02:1748::100:126:0:255
172a02:1748::100:126:0:252
182a02:1748:0:1500:5::3200
duseldorf - verdict honored

verdict = honored; final pmtu = 1500

#hop IPpmtu change
1<span class='muted'>no reply</span>
22001:4ba0:92f4:3::1
3<span class='muted'>no reply</span>
42001:4ba0:ffe9:109::2
52001:4ba0:ffe9:8::2
62001:7f8::c7f0:0:1
72a02:1748::100:126:0:246
82a02:1748::100:126:0:255
92a02:1748::100:126:0:252
102a02:1748:0:1500:5::3200
go6lab - verdict not_honored

verdict = not_honored; final pmtu = 1500

#hop IPpmtu change
1<span class='muted'>no reply</span>
22a00:8642:1000:f000::1
32a00:8642:dc1:2::b
42001:7f8:1::a505:1184:1
52a02:1748::100:126:0:255
62a02:1748::100:126:0:252
72a02:1748:0:1500:5::3200
karsolink - verdict honored

verdict = honored; final pmtu = 1500

#hop IPpmtu change
1<span class='muted'>no reply</span>
22a12:d8c0:109f:121::a1
32a12:d8c0:101f:103::1
4<span class='muted'>no reply</span>
52001:470:0:414::1
62001:7f8:30:0:2:1:5:1184
72a02:1748::100:126:0:246
82a02:1748::100:126:0:255
92a02:1748::100:126:0:252
102a02:1748:0:1500:5::3200
odin - verdict honored

verdict = honored; final pmtu = 1500

#hop IPpmtu change
1<span class='muted'>no reply</span>
22607:fae0:a000:2::2
32a00:ee1:800:9::1
42a00:ee0:1:15::2
52a00:ee0:1:15::2
62a02:1748::100:126:0:246
72a02:1748::100:126:0:255
82a02:1748::100:126:0:252
92a02:1748:0:1500:5::3200
t2 - verdict honored

verdict = honored; final pmtu = 1500

#hop IPpmtu change
1<span class='muted'>no reply</span>
22a01:260:1::225
32a01:260:1:1::9a
42a01:260:1:1::38
52001:470:0:4a8::1
62001:7f8:30:0:2:1:5:1184
72a02:1748::100:126:0:246
82a02:1748::100:126:0:255
92a02:1748::100:126:0:255
102a02:1748::100:126:0:252
112a02:1748:0:1500:5::3200

Target 2a02:1748:0:1500:9::9005

amsterdam - verdict ?

(no hops captured)

belgrade - verdict honored

verdict = honored; final pmtu = 1500

#hop IPpmtu change
1<span class='muted'>no reply</span>
22001:7f8:1e:8::3a
32001:7f8:1e:8::3d
42a02:2d8:0:a00e:232a::
52001:7f8:30:0:2:1:5:1184
62a02:1748::100:126:0:246
72a02:1748::100:126:0:255
82a02:1748::100:126:0:252
92a02:1748:0:1500:9::9005
berlin - verdict honored

verdict = honored; final pmtu = 1500

#hop IPpmtu change
1<span class='muted'>no reply</span>
22a06:d1c0::dead:beef:1c02
32a00:c380:b200:230::192
42a00:c380:b200:230::45
52a00:c380:f000::4b
62a01:4a0:0:2087::33
72a01:4a0:0:2071::4
82a01:4a0:0:2021::4
92a01:4a0:0:2003::2
102a01:4a0:0:2032::7
112a01:4a0:0:2028::10
122a01:4a0:1338:218::2
132a02:1b8::49:1
142a02:1b8:10:6::242
152a02:1748::100:126:0:246
162a02:1748::100:126:0:255
172a02:1748::100:126:0:252
182a02:1748:0:1500:9::9005
duseldorf - verdict honored

verdict = honored; final pmtu = 1500

#hop IPpmtu change
1<span class='muted'>no reply</span>
22001:4ba0:92f4:3::1
3<span class='muted'>no reply</span>
42001:4ba0:ffe9:109::2
52001:4ba0:ffe9:4f::1
62001:7f8::c7f0:0:1
72a02:1748::100:126:0:246
82a02:1748::100:126:0:255
92a02:1748::100:126:0:252
102a02:1748:0:1500:9::9005
go6lab - verdict not_honored

verdict = not_honored; final pmtu = 1500

#hop IPpmtu change
1<span class='muted'>no reply</span>
22a00:8642:1000:f000::1
32a00:8642:dc1:2::b
42001:7f8:1::a505:1184:1
52a02:1748::100:126:0:255
62a02:1748::100:126:0:252
72a02:1748:0:1500:9::9005
karsolink - verdict honored

verdict = honored; final pmtu = 1500

#hop IPpmtu change
1<span class='muted'>no reply</span>
22a12:d8c0:109f:121::a1
32a12:d8c0:101f:6::1
4<span class='muted'>no reply</span>
52001:470:0:414::1
62001:7f8:30:0:2:1:5:1184
72a02:1748::100:126:0:246
82a02:1748::100:126:0:255
92a02:1748::100:126:0:252
102a02:1748:0:1500:9::9005
odin - verdict honored

verdict = honored; final pmtu = 1500

#hop IPpmtu change
1<span class='muted'>no reply</span>
22607:fae0:a000:2::2
32a00:ee1:800:9::1
42a00:ee0:1:10::2
52a00:ee0:1:15::2
62a02:1748::100:126:0:246
72a02:1748::100:126:0:255
82a02:1748::100:126:0:252
92a02:1748:0:1500:9::9005
t2 - verdict honored

verdict = honored; final pmtu = 1500

#hop IPpmtu change
1<span class='muted'>no reply</span>
22a01:260:1::225
32a01:260:1:1::9a
4<span class='muted'>no reply</span>
52001:470:0:4a8::1
62001:470:0:4a8::1
72a02:1748::100:126:0:246
82a02:1748::100:126:0:246
92a02:1748::100:126:0:255
102a02:1748::100:126:0:252
112a02:1748:0:1500:9::9005

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 AS51184

From SRB host (SOX, Belgrade)   openRFC 4890 ✓

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

4/4
Echo small (56B) 12.9ms
4/4
Echo 1500B (DF) 12.8ms
yes
Type 1 dest-unreach
443,80
TCP responds on

Path (traceroute + mtr + PTR)

#IP / PTRRTTmtr lossASAS holder
12a09:ab81::10.3ms0%*AS60733PERKE-NET - ZORAN PEROVIC trading as Agencija Perke.NET, RS
2sox-pn.sox.rs
2001:7f8:1e:8::3a		0.3ms0%AS13004SOX - Serbian Open Exchange DOO, RS
32001:7f8:1e:8::3d0.6ms0%AS13004SOX - Serbian Open Exchange DOO, RS
42a02:2d8:0:a00e:232a16.8ms0%-
5bgp1.ix.as51184.net @VIX / AAIX / SAIX / TIROL-IX / ERA-IX
2001:7f8:30:0:2:1:5:1184		12.9ms0%-NA
6bgp2.ix.as51184.net
2a02:1748::100:126:0:246		12.9ms0%AS51184FONIRA - Fonira Telekom GmbH, AT
7*---
82a02:1748::100:126:0:25214.8ms0%AS51184FONIRA - Fonira Telekom GmbH, AT
9hosting.mediainvent.com
2a02:1748:0:1500:3::3211		12.7ms0%AS51184FONIRA - Fonira Telekom GmbH, AT

tracepath -6

 1?: [LOCALHOST]                        0.016ms pmtu 1500
 1:  _gateway                                              0.967ms 
 1:  _gateway                                              0.596ms 
 2:  sox-pn.sox.rs                                         0.495ms 
 3:  2001:7f8:1e:8::3d                                     0.745ms asymm  2 
 4:  ae8-930.RT.IRX.VIE.AT.retn.net                       49.281ms asymm  3 
 5:  bgp1.ix.as51184.net                                  12.754ms asymm  3 
 6:  bgp2.ix.as51184.net                                  11.337ms asymm  4 
 7:  no reply
 8:  2a02:1748::100:126:0:252                             14.177ms asymm  5 
 9:  hosting.mediainvent.com                              11.448ms reached
     Resume: pmtu 1500 hops 9 back 6

From DE host (Berlin)   openRFC 4890 ✓

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

4/4
Echo small (56B) 27.6ms
4/4
Echo 1500B (DF) 27.5ms
yes
Type 1 dest-unreach
443,80
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		1.0ms0%*AS59645WYBT-NET - Tobias Fiebig, DE
3ae3-90.cr10.ham01.lwlcom.net
2a00:c380:b200:230::192		9.1ms0%AS50629LWLCOM - LWLcom GmbH, DE
4ae0-50.cr11.ham01.lwlcom.net
2a00:c380:b200:230::45		4.8ms0%AS50629LWLCOM - LWLcom GmbH, DE
52a00:c380:f000::4b5.2ms0%AS50629LWLCOM - LWLcom GmbH, DE
6ae4-2087.dus10.core-backbone.com
2a01:4a0:0:2087::33		11.2ms0%AS201011CORE-BACKBONE - Core-Backbone GmbH, DE
7ae21-2071.fra10.core-backbone.com
2a01:4a0:0:2071::4		10.7ms0%AS201011CORE-BACKBONE - Core-Backbone GmbH, DE
8ae2-2021.fra20.core-backbone.com
2a01:4a0:0:2021::4		10.6ms0%AS201011CORE-BACKBONE - Core-Backbone GmbH, DE
9ae6-2003.nbg20.core-backbone.com
2a01:4a0:0:2003::2		12.1ms0%AS201011CORE-BACKBONE - Core-Backbone GmbH, DE
10ae2-2032.muc20.core-backbone.com
2a01:4a0:0:2032::7		14.6ms0%AS201011CORE-BACKBONE - Core-Backbone GmbH, DE
11ae1-2028.vie10.core-backbone.com
2a01:4a0:0:2028::10		20.3ms0%AS201011CORE-BACKBONE - Core-Backbone GmbH, DE
122a01:4a0:1338:218::220.9ms0%AS201011CORE-BACKBONE - Core-Backbone GmbH, DE
132a02:1b8::49:121.0ms0%AS47692NESSUS - Nessus GmbH, AT
142a02:1b8:10:6::24226.6ms0%AS47692NESSUS - Nessus GmbH, AT
15bgp2.ix.as51184.net
2a02:1748::100:126:0:246		26.5ms0%AS51184FONIRA - Fonira Telekom GmbH, AT
16*---
172a02:1748::100:126:0:25227.1ms0%AS51184FONIRA - Fonira Telekom GmbH, AT
18hosting.mediainvent.com
2a02:1748:0:1500:3::3211		27.3ms0%AS51184FONIRA - Fonira Telekom GmbH, AT

tracepath -6

 1?: [LOCALHOST]                        0.028ms pmtu 1500
 1:  xe-0-0-13-178.gw01.ber01.as59645.net                  0.501ms 
 1:  xe-0-0-13-178.gw01.ber01.as59645.net                  0.442ms 
 2:  ae0-2453.cr10.ber01.lwlcom.net                        0.899ms 
 3:  ae3-90.cr10.ham01.lwlcom.net                          5.273ms 
 4:  ae0-50.cr11.ham01.lwlcom.net                          5.230ms 
 5:  2a00:c380:f000::4b                                    5.409ms asymm  4 
 6:  ae4-2087.dus10.core-backbone.com                     11.772ms asymm  5 
 7:  ae21-2071.fra10.core-backbone.com                    10.994ms asymm  5 
 8:  ae2-2021.fra20.core-backbone.com                     10.989ms asymm  4 
 9:  ae6-2003.nbg20.core-backbone.com                     12.347ms asymm  6 
10:  ae2-2032.muc20.core-backbone.com                     14.971ms asymm  7 
11:  ae1-2028.vie10.core-backbone.com                     20.378ms asymm  8 
12:  2a01:4a0:1338:218::2                                 21.495ms asymm  7 
13:  2a02:1b8::49:1                                       21.246ms asymm  6 
14:  2a02:1b8:10:6::242                                   36.389ms asymm  8 
15:  bgp2.ix.as51184.net                                  43.107ms asymm  7 
16:  no reply
17:  2a02:1748::100:126:0:252                             31.751ms asymm 10 
18:  hosting.mediainvent.com                              27.674ms reached
     Resume: pmtu 1500 hops 18 back 11

From DE host (Düsseldorf)   openRFC 4890 ✓

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

4/4
Echo small (56B) 18.3ms
4/4
Echo 1500B (DF) 18.3ms
yes
Type 1 dest-unreach
443,80
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		0.3ms0%*AS59645WYBT-NET - Tobias Fiebig, DE
2eth1-0-12-h5594.edge5-dus1.bb.wiit.network
2001:4ba0:92f4:3::1		1.8ms0%AS24961MYLOC-AS - WIIT AG, DE
3lag13.agr3-dus3.bb.wiit.network
2001:4ba0:ffe9:7d::1		9.0ms0%AS24961MYLOC-AS - WIIT AG, DE
4lag11.core3-dus1.bb.wiit.network
2001:4ba0:ffe9:115::3		0.4ms0%AS24961MYLOC-AS - WIIT AG, DE
5lag2.core1-dus-ix.bb.wiit.network
2001:4ba0:ffe9:4f::1		0.6ms0%AS24961MYLOC-AS - WIIT AG, DE
6edge.de-cix.as51184.net
2001:7f8::c7f0:0:1		16.8ms0%-NA
7bgp2.ix.as51184.net
2a02:1748::100:126:0:246		17.4ms0%AS51184FONIRA - Fonira Telekom GmbH, AT
8*---
92a02:1748::100:126:0:25217.5ms0%AS51184FONIRA - Fonira Telekom GmbH, AT
10hosting.mediainvent.com
2a02:1748:0:1500:3::3211		18.1ms0%AS51184FONIRA - Fonira Telekom GmbH, AT

tracepath -6

 1?: [LOCALHOST]                        0.020ms pmtu 1500
 1:  xe-0-0-12-142.gw01.dus01.as59645.net                  0.429ms 
 1:  xe-0-0-12-142.gw01.dus01.as59645.net                  0.310ms 
 2:  eth1-0-12-h5594.edge5-dus1.bb.wiit.network            1.643ms 
 3:  no reply
 4:  lag11.core3-dus1.bb.wiit.network                      0.467ms 
 5:  lag8.core1-dus-ix.bb.wiit.network                     0.759ms 
 6:  edge.de-cix.as51184.net                              16.835ms asymm  7 
 7:  bgp2.ix.as51184.net                                  17.570ms asymm  6 
 8:  no reply
 9:  2a02:1748::100:126:0:252                             28.212ms 
10:  hosting.mediainvent.com                              18.400ms reached
     Resume: pmtu 1500 hops 10 back 10

From NL host (go6lab)   openRFC 4890 ✓

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

4/4
Echo small (56B) 22.4ms
4/4
Echo 1500B (DF) 21.6ms
yes
Type 1 dest-unreach
443,80
TCP responds on

Path (traceroute + mtr + PTR)

#IP / PTRRTTmtr lossASAS holder
12a00:8642:42::22.1ms0%AS203993GNA-DC1-AS - S.J.M. Steffann, NL
2gw.friends.steffann.nl
2a00:8642:1000:f000::1		7.2ms0%*AS203993GNA-DC1-AS - S.J.M. Steffann, NL
3*-20%-
4bgp2.ix.as51184.net
2001:7f8:1::a505:1184:1		35.6ms0%-NA
5*---
62a02:1748::100:126:0:25228.4ms0%AS51184FONIRA - Fonira Telekom GmbH, AT
7hosting.mediainvent.com
2a02:1748:0:1500:3::3211		21.0ms0%AS51184FONIRA - Fonira Telekom 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]                        0.027ms pmtu 1500
 1:  2a00:8642:42::2                                       3.517ms 
 1:  2a00:8642:42::2                                       1.377ms 
 2:  gw.friends.steffann.nl                                4.710ms 
 3:  no reply
 4:  bgp2.ix.as51184.net                                  44.038ms asymm  8 
 5:  no reply
 6:  2a02:1748::100:126:0:252                             26.173ms asymm  9 
 7:  hosting.mediainvent.com                              20.970ms reached
     Resume: pmtu 1500 hops 7 back 10

From ITA host (Karsolink)   openRFC 4890 ✓

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

4/4
Echo small (56B) 15.6ms
4/4
Echo 1500B (DF) 15.6ms
yes
Type 1 dest-unreach
443,80
TCP responds on

Path (traceroute + mtr + PTR)

#IP / PTRRTTmtr lossASAS holder
1karsolink-01.net.karsolink.com
2a12:d8c0:105a:9001::1		0.4ms0%*AS204471KARSOLINK - 2S Computers SRL, IT
22a12:d8c0:109f:121::a10.5ms0%*AS204471KARSOLINK - 2S Computers SRL, IT
32a12:d8c0:101f:6::171.8ms-AS204471KARSOLINK - 2S Computers SRL, IT
4*---
5100ge0-0-0-20.core1.vie1.he.net
2001:470:0:414::1		23.6ms10%AS6939HURRICANE - Hurricane Electric LLC, US
6bgp1.ix.as51184.net @VIX / AAIX / SAIX / TIROL-IX / ERA-IX
2001:7f8:30:0:2:1:5:1184		15.5ms0%-NA
7bgp2.ix.as51184.net
2a02:1748::100:126:0:246		16.2ms0%AS51184FONIRA - Fonira Telekom GmbH, AT
8*---
92a02:1748::100:126:0:25217.4ms0%AS51184FONIRA - Fonira Telekom GmbH, AT
10hosting.mediainvent.com
2a02:1748:0:1500:3::3211		16.3ms0%AS51184FONIRA - Fonira Telekom 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]                        0.029ms pmtu 1500
 1:  karsolink-01.net.karsolink.com                        0.579ms 
 1:  karsolink-01.net.karsolink.com                        0.794ms 
 2:  2a12:d8c0:109f:121::a1                                0.819ms 
 3:  2a12:d8c0:101f:6::1                                  10.385ms 
 4:  no reply
 5:  100ge0-0-0-20.core1.vie1.he.net                      22.930ms 
 6:  bgp1.ix.as51184.net                                  16.425ms 
 7:  bgp2.ix.as51184.net                                  16.029ms 
 8:  no reply
 9:  2a02:1748::100:126:0:252                             18.027ms asymm  8 
10:  hosting.mediainvent.com                              17.102ms reached
     Resume: pmtu 1500 hops 10 back 9

From SLO host (6connect)   openRFC 4890 ✓

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

4/4
Echo small (56B) 15.6ms
4/4
Echo 1500B (DF) 15.7ms
yes
Type 1 dest-unreach
443,80
TCP responds on

Path (traceroute + mtr + PTR)

#IP / PTRRTTmtr lossASAS holder
1fw1-lju.6connect.com
2607:fae0:a000::2		0.5ms0%*AS80386CONNECT - 6connect, Inc., US
2*---
3*-0%-
42a00:ee0:1:15::21.3ms0%AS5603SIOL-NET - Telekom Slovenije, d.d., SI
5edge.de-cix.as51184.net
2001:7f8::c7f0:0:1		15.3ms0%-NA
6bgp2.ix.as51184.net
2a02:1748::100:126:0:246		15.3ms0%AS51184FONIRA - Fonira Telekom GmbH, AT
7*-10%-
82a02:1748::100:126:0:25225.3ms0%AS51184FONIRA - Fonira Telekom GmbH, AT
9hosting.mediainvent.com
2a02:1748:0:1500:3::3211		15.9ms0%AS51184FONIRA - Fonira Telekom 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]                        0.031ms pmtu 9000
 1:  fw1-lju.6connect.com                                  0.586ms 
 1:  fw1-lju.6connect.com                                  0.640ms 
 2:  no reply
 3:  no reply
 4:  2a00:ee0:1:15::2                                      1.413ms asymm  3 
 5:  2a00:ee0:1:15::2                                      1.444ms pmtu 1500
 5:  edge.de-cix.as51184.net                              15.406ms 
 6:  bgp2.ix.as51184.net                                  15.708ms asymm  5 
 7:  dist1.ix.as51184.net                                1783.890ms asymm  6 
 8:  2a02:1748::100:126:0:252                             17.640ms asymm  7 
 9:  hosting.mediainvent.com                              16.248ms reached
     Resume: pmtu 1500 hops 9 back 7

From SLO host (T-2)   openRFC 4890 ✓

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

4/4
Echo small (56B) 9.6ms
4/4
Echo 1500B (DF) 9.9ms
yes
Type 1 dest-unreach
443,80
TCP responds on

Path (traceroute + mtr + PTR)

#IP / PTRRTTmtr lossASAS holder
12a01:261:313:b814::10.4ms0%*AS34779T-2-AS - T-2, d.o.o., SI
22a01:260:1::2251.9ms0%*AS34779T-2-AS - T-2, d.o.o., SI
32a01-260-1-1--9a.core6.t-2.net
2a01:260:1:1::9a		2.3ms0%*AS34779T-2-AS - T-2, d.o.o., SI
42a01-260-1-1--38.core6.t-2.net
2a01:260:1:1::38		1.9ms0%*AS34779T-2-AS - T-2, d.o.o., SI
5100ge0-0-0-31.core1.vie1.he.net
2001:470:0:4a8::1		10.5ms-AS6939HURRICANE - Hurricane Electric LLC, US
6100ge0-0-0-31.core1.vie1.he.net
2001:470:0:4a8::1		10.5ms30%AS6939HURRICANE - Hurricane Electric LLC, US
7bgp2.ix.as51184.net
2a02:1748::100:126:0:246		9.4ms0%AS51184FONIRA - Fonira Telekom GmbH, AT
8bgp2.ix.as51184.net
2a02:1748::100:126:0:246		8.9ms0%AS51184FONIRA - Fonira Telekom GmbH, AT
92a02:1748::100:126:0:25221.6ms-AS51184FONIRA - Fonira Telekom GmbH, AT
102a02:1748::100:126:0:25220.1ms0%AS51184FONIRA - Fonira Telekom GmbH, AT
11hosting.mediainvent.com
2a02:1748:0:1500:3::3211		10.2ms0%AS51184FONIRA - Fonira Telekom GmbH, AT

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

tracepath -6

 1?: [LOCALHOST]                        0.029ms pmtu 1500
 1:  no reply
 2:  2a01:260:1::225                                       2.061ms 
 3:  2a01-260-1-1--9c.core6.t-2.net                        2.724ms 
 4:  2a01-260-1-1--38.core6.t-2.net                        2.987ms asymm  3 
 5:  100ge0-0-0-31.core1.vie1.he.net                      12.385ms 
 6:  100ge0-0-0-31.core1.vie1.he.net                      13.352ms asymm  5 
 7:  bgp1.ix.as51184.net                                   9.021ms asymm  5 
 8:  bgp2.ix.as51184.net                                   9.258ms asymm  6 
 9:  2a02:1748::100:126:0:252                             19.475ms asymm  7 
10:  hosting.mediainvent.com                               9.963ms reached
     Resume: pmtu 1500 hops 10 back 8