AS6798 NET4YOU-AS Net4You Internet GmbH

AS overview

Test target: 2a00:12e0:101::2 · dns1.net4you.net · address space: mixed · prefixes announced: 1

prefix(es): 2a00:12e0::/32

Targets & per-vantage-point probe results (5 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)
Target IP / hostname	Source	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
`2a00:12e0:100:80::1e` ftp.net4you.net	drv	✓	✓	open	open	✓	✓	✓	open	open	✓	✓	✓	open	open	✓	✓	✓	open	open	✓	✓	✓	open	open	✓	✓	✓	open	open	✓	✓	✓	open	open	-
`2a00:12e0:101::2` dns1.net4you.net	NS	✓	✓	refused	refused	✓	✓	✓	refused	refused	✓	✓	✓	refused	refused	✓	✓	✓	?	?	✓	✓	✓	refused	refused	-	✓	✓	refused	refused	✓	✓	✓	refused	refused	✓
`2a00:12e0:101::3` ns1.net4you.net	drv	✓	✓	refused	open	✓	✓	✓	refused	open	✓	✓	✓	refused	open	✓	✓	✓	?	open	✓	✓	✓	refused	open	✓	✓	✓	refused	open	✓	✓	✓	refused	open	✓
`2a00:12e0:301::2` dns2.net4you.net	NS	✓	✓	refused	refused	✓	✓	✓	refused	refused	✓	✓	✓	refused	refused	✓	✓	✓	?	?	✓	✓	✓	refused	refused	✓	✓	✓	refused	refused	✓	✓	✓	refused	refused	-
`2a00:12e0:301::3` ns2.net4you.net	drv	✓	✓	refused	open	✓	✓	✓	refused	open	✓	✓	✓	refused	open	✓	✓	✓	?	open	✓	✓	✓	refused	open	✓	✓	✓	refused	open	✓	✓	✓	refused	open	-

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

VIX / AAIX / SAIX / TIROL-IX / ERA-IX member - Open peering, peering member, since 2019-09-25. IPv6 LAN: 2001:7f8:30:0:2:1:0:6798. Locations: -.

RPKI & ASPA

1 of 1 prefix(es) covered by a valid ROA.

Prefix	RPKI state	Reason	Covering VRP(s)
`2a00:12e0::/32`	✓ valid	matched VRP (correct origin, length within maxLength)	AS6798 /32 maxLen 32 (ripe)

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

At least one router inside AS6798's announced prefix replied during the random-target probe. Hop(s): 2a00:12e0:1000:3::11, 2a00:12e0:1000:500:194:177:149:145, 2a00:12e0:2:4000:194:177:149:129, 2a00:12e0:2:4001:194:177:149:137. 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 2026-09-22T13:51:19Z

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

4/4

Echo small (56B) 18.9ms

4/4

Echo 1500B (DF) 19.0ms

yes

Type 1 dest-unreach

443,80

TCP responds on

Path (traceroute + mtr + PTR)

#	IP / PTR	RTT	mtr loss	AS	AS holder
1	2a09:ab81::1	0.3ms	0%*	AS60733	PERKE-NET - ZORAN PEROVIC trading as Agencija Perke.NET, RS
2	2001:7f8:1e::4	0.4ms	0%	AS13004	SOX - Serbian Open Exchange DOO, RS
3	2001:7f8:30:0:2:1:0:6798 @VIX / AAIX / SAIX / TIROL-IX / ERA-IX	10.0ms	0%	-	NA
4	rt01-vie01.net4you.net 2a00:12e0:2:4001:194:177:149:137	11.2ms	0%	AS6798	NET4YOU-AS - Net4You Internet GmbH, AT
5	2a00:12e0:1000:500:194:177:149:148	18.0ms	0%	AS6798	NET4YOU-AS - Net4You Internet GmbH, AT
6	rt01-vil01.net4you.net 2a00:12e0:1:4011:194:177:149:122	20.7ms	0%	AS6798	NET4YOU-AS - Net4You Internet GmbH, AT
7	dns1.net4you.net 2a00:12e0:101::2	20.4ms	0%	AS6798	NET4YOU-AS - Net4You Internet GmbH, AT

tracepath -6

 1?: [LOCALHOST]                        0.011ms pmtu 1500
 1:  _gateway                                              0.644ms 
 1:  _gateway                                              0.663ms 
 2:  2001:7f8:1e::4                                        0.935ms 
 3:  2001:7f8:30:0:2:1:0:6798                              9.888ms asymm  6 
 4:  rt01-vie01.net4you.net                                9.862ms asymm  7 
 5:  2a00:12e0:1000:500:194:177:149:148                   20.157ms asymm  8 
 6:  rt01-vil01.net4you.net                               21.642ms asymm  9 
 7:  dns1.net4you.net                                     20.887ms reached
     Resume: pmtu 1500 hops 7 back 10

From DE host (Berlin) openRFC 4890 ✓

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

4/4

Echo small (56B) 33.6ms

3/4

Echo 1500B (DF) 34.0ms

yes

Type 1 dest-unreach

443,80

TCP responds on

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	0.2ms	0%*	AS59645	WYBT-NET - Tobias Fiebig, DE
2	ae0-2453.cr10.ber01.lwlcom.net 2a06:d1c0::dead:beef:1c02	0.8ms	0%*	AS59645	WYBT-NET - Tobias Fiebig, DE
3	ae3-90.cr10.ham01.lwlcom.net 2a00:c380:b200:230::192	5.0ms	0%	AS50629	LWLCOM - LWLcom GmbH, DE
4	ae0-50.cr11.ham01.lwlcom.net 2a00:c380:b200:230::45	4.9ms	0%	AS50629	LWLCOM - LWLcom GmbH, DE
5	2a00:c380:f000::4b	5.1ms	0%	AS50629	LWLCOM - LWLcom GmbH, DE
6	ae4-2087.dus10.core-backbone.com 2a01:4a0:0:2087::33	11.2ms	0%	AS201011	CORE-BACKBONE - Core-Backbone GmbH, DE
7	ae21-2071.fra10.core-backbone.com 2a01:4a0:0:2071::4	10.8ms	0%	AS201011	CORE-BACKBONE - Core-Backbone GmbH, DE
8	ae2-2021.fra20.core-backbone.com 2a01:4a0:0:2021::4	10.6ms	0%	AS201011	CORE-BACKBONE - Core-Backbone GmbH, DE
9	ae6-2003.nbg20.core-backbone.com 2a01:4a0:0:2003::2	12.0ms	0%	AS201011	CORE-BACKBONE - Core-Backbone GmbH, DE
10	ae2-2032.muc20.core-backbone.com 2a01:4a0:0:2032::7	14.6ms	0%	AS201011	CORE-BACKBONE - Core-Backbone GmbH, DE
11	ae1-2028.vie10.core-backbone.com 2a01:4a0:0:2028::10	20.2ms	0%	AS201011	CORE-BACKBONE - Core-Backbone GmbH, DE
12	2a01:4a0:1338:f6::2	24.3ms	0%	AS201011	CORE-BACKBONE - Core-Backbone GmbH, DE
13	rt01-vie01.net4you.net 2a00:12e0:2:4001:194:177:149:137	24.4ms	0%	AS6798	NET4YOU-AS - Net4You Internet GmbH, AT
14	2a00:12e0:1000:500:194:177:149:148	33.1ms	0%	AS6798	NET4YOU-AS - Net4You Internet GmbH, AT
15	2a00:12e0:1:4010:194:177:149:118	34.4ms	0%	AS6798	NET4YOU-AS - Net4You Internet GmbH, AT
16	dns1.net4you.net 2a00:12e0:101::2	33.5ms	0%	AS6798	NET4YOU-AS - Net4You Internet GmbH, AT

tracepath -6

 1?: [LOCALHOST]                        0.036ms pmtu 1500
 1:  xe-0-0-13-178.gw01.ber01.as59645.net                  0.924ms 
 1:  xe-0-0-13-178.gw01.ber01.as59645.net                  0.777ms 
 2:  ae0-2453.cr10.ber01.lwlcom.net                        1.002ms 
 3:  ae3-90.cr10.ham01.lwlcom.net                         13.994ms 
 4:  ae0-50.cr11.ham01.lwlcom.net                          5.450ms 
 5:  2a00:c380:f000::4b                                    5.691ms asymm  4 
 6:  ae4-2087.dus10.core-backbone.com                     12.047ms asymm  5 
 7:  ae21-2071.fra10.core-backbone.com                    11.159ms asymm  5 
 8:  ae2-2021.fra20.core-backbone.com                     11.304ms asymm  4 
 9:  ae6-2003.nbg20.core-backbone.com                     12.538ms asymm  6 
10:  ae2-2032.muc20.core-backbone.com                     15.210ms asymm  7 
11:  ae1-2028.vie10.core-backbone.com                     20.665ms asymm  8 
12:  2a01:4a0:1338:f6::2                                  26.237ms asymm  6 
13:  rt01-vie01.net4you.net                               27.202ms asymm  7 
14:  2a00:12e0:1000:500:194:177:149:148                   33.362ms asymm  8 
15:  2a00:12e0:1:4010:194:177:149:118                     34.722ms asymm  9 
16:  dns1.net4you.net                                     34.312ms reached
     Resume: pmtu 1500 hops 16 back 10

From DE host (Düsseldorf) openRFC 4890 ✓

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

4/4

Echo small (56B) 24.3ms

4/4

Echo 1500B (DF) 24.6ms

yes

Type 1 dest-unreach

443,80

TCP responds on

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	0.2ms	0%*	AS59645	WYBT-NET - Tobias Fiebig, DE
2	eth1-0-12-h5594.edge5-dus1.bb.wiit.network 2001:4ba0:92f4:3::1	2.6ms	0%	AS24961	MYLOC-AS - WIIT AG, DE
3	lag13.agr3-dus3.bb.wiit.network 2001:4ba0:ffe9:7d::1	1.9ms	0%	AS24961	MYLOC-AS - WIIT AG, DE
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	0.5ms	0%	AS24961	MYLOC-AS - WIIT AG, DE
6	core-backbone-dus-gw.bb.wiit.network 2001:4ba0:ffe9:44::2	10.3ms	0%	AS24961	MYLOC-AS - WIIT AG, DE
7	ae21-2071.fra10.core-backbone.com 2a01:4a0:0:2071::4	9.5ms	0%	AS201011	CORE-BACKBONE - Core-Backbone GmbH, DE
8	ae2-2021.fra20.core-backbone.com 2a01:4a0:0:2021::4	9.5ms	0%	AS201011	CORE-BACKBONE - Core-Backbone GmbH, DE
9	ae6-2003.nbg20.core-backbone.com 2a01:4a0:0:2003::2	10.8ms	0%	AS201011	CORE-BACKBONE - Core-Backbone GmbH, DE
10	ae2-2032.muc20.core-backbone.com 2a01:4a0:0:2032::7	13.3ms	0%	AS201011	CORE-BACKBONE - Core-Backbone GmbH, DE
11	ae1-2028.vie10.core-backbone.com 2a01:4a0:0:2028::10	18.9ms	0%	AS201011	CORE-BACKBONE - Core-Backbone GmbH, DE
12	2a01:4a0:1338:f6::2	14.9ms	0%	AS201011	CORE-BACKBONE - Core-Backbone GmbH, DE
13	rt01-vie01.net4you.net 2a00:12e0:2:4001:194:177:149:137	15.0ms	0%	AS6798	NET4YOU-AS - Net4You Internet GmbH, AT
14	2a00:12e0:1000:500:194:177:149:148	23.5ms	0%	AS6798	NET4YOU-AS - Net4You Internet GmbH, AT
15	2a00:12e0:1:4010:194:177:149:118	24.9ms	0%	AS6798	NET4YOU-AS - Net4You Internet GmbH, AT
16	dns1.net4you.net 2a00:12e0:101::2	24.2ms	0%	AS6798	NET4YOU-AS - Net4You Internet GmbH, AT

tracepath -6

 1?: [LOCALHOST]                        0.025ms pmtu 1500
 1:  xe-0-0-12-142.gw01.dus01.as59645.net                  0.621ms 
 1:  xe-0-0-12-142.gw01.dus01.as59645.net                  1.078ms 
 2:  eth1-0-12-h5594.edge5-dus1.bb.wiit.network            2.658ms 
 3:  no reply
 4:  lag11.core3-dus1.bb.wiit.network                      0.445ms 
 5:  lag2.core1-dus-ix.bb.wiit.network                     0.479ms 
 6:  core-backbone-dus-gw.bb.wiit.network                 10.306ms 
 7:  ae21-2071.fra10.core-backbone.com                     9.563ms asymm  6 
 8:  ae2-2021.fra20.core-backbone.com                      9.645ms asymm  5 
 9:  ae6-2003.nbg20.core-backbone.com                     11.190ms asymm  7 
10:  ae2-2032.muc20.core-backbone.com                     13.632ms asymm  8 
11:  ae1-2028.vie10.core-backbone.com                     19.077ms asymm  9 
12:  2a01:4a0:1338:f6::2                                  15.637ms asymm  5 
13:  rt01-vie01.net4you.net                               42.311ms asymm  6 
14:  2a00:12e0:1000:500:194:177:149:148                   23.968ms asymm  7 
15:  2a00:12e0:1:4010:194:177:149:118                     25.391ms asymm  8 
16:  dns1.net4you.net                                     24.814ms reached
     Resume: pmtu 1500 hops 16 back 9

From NL host (go6lab) openRFC 4890 ✓

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

4/4

Echo small (56B) 39.0ms

3/4

Echo 1500B (DF) 39.5ms

yes

Type 1 dest-unreach

TCP responds on

Path (traceroute + mtr + PTR)

#	IP / PTR	RTT	mtr loss	AS	AS holder
1	2a00:8642:42::2	1.7ms	0%	AS203993	GNA-DC1-AS - S.J.M. Steffann, NL
2	*	-	0%*	-
3	*	-	-	-
4	ae3-1337.bbr02.anx63.ams.nl.anexia-it.net 2001:7f8:1::a504:7147:1	6.2ms	0%	-	NA
5	2a00:11c0:47:1:47::213	30.8ms	0%	AS47147	AS-ANX - Anexia Cloud Solutions GmbH, AT
6	2a00:11c0:47:1:47::136	28.5ms	0%	AS47147	AS-ANX - Anexia Cloud Solutions GmbH, AT
7	2a00:11c0:47:3::55	30.7ms	0%	AS47147	AS-ANX - Anexia Cloud Solutions GmbH, AT
8	2a00:12e0:1000:500:194:177:149:148	40.1ms	0%	AS6798	NET4YOU-AS - Net4You Internet GmbH, AT
9	2a00:12e0:1:4010:194:177:149:118	40.7ms	0%	AS6798	NET4YOU-AS - Net4You Internet GmbH, AT
10	dns1.net4you.net 2a00:12e0:101::2	38.2ms	0%	AS6798	NET4YOU-AS - Net4You Internet GmbH, AT

tracepath -6

 1?: [LOCALHOST]                        0.035ms pmtu 1500
 1:  2a00:8642:42::2                                       2.299ms 
 1:  2a00:8642:42::2                                       2.794ms 
 2:  no reply
 3:  no reply
 4:  ae3-1337.bbr02.anx63.ams.nl.anexia-it.net             6.711ms asymm  5 
 5:  2a00:11c0:47:1:47::213                               27.226ms asymm 10 
 6:  2a00:11c0:47:1:47::136                               31.638ms asymm 11 
 7:  2a00:11c0:47:3::55                                   30.500ms asymm 12 
 8:  2a00:12e0:1000:500:194:177:149:148                   38.644ms asymm 13 
 9:  2a00:12e0:1:4010:194:177:149:118                     40.567ms asymm 14 
10:  dns1.net4you.net                                     39.213ms reached
     Resume: pmtu 1500 hops 10 back 15

From ITA host (Karsolink) openRFC 4890 ✓

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

4/4

Echo small (56B) 46.3ms

3/4

Echo 1500B (DF) 56.6ms

yes

Type 1 dest-unreach

443,80

TCP responds on

Path (traceroute + mtr + PTR)

#	IP / PTR	RTT	mtr loss	AS	AS holder
1	*	-	-	-
2	*	-	0%*	-
3	*	-	-	-
4	2a02:2d8:4:1815:232a	3.3ms	0%	-
5	RT.IRX.VIE.AT.retn.net 2a02:2d8::57f5:e0af	11.1ms	0%	AS9002	RETN-AS - RETN Limited, GB
6	GW-AS47147.retn.net 2a02:2d8:0:a00d:232a::1	11.5ms	0%	AS9002	RETN-AS - RETN Limited, GB
7	2a00:11c0:47:1:47::149	20.6ms	0%	AS47147	AS-ANX - Anexia Cloud Solutions GmbH, AT
8	2a00:11c0:47:1:47::151	31.8ms	0%	AS47147	AS-ANX - Anexia Cloud Solutions GmbH, AT
9	2a00:11c0:47:1:47::138	28.8ms	0%	AS47147	AS-ANX - Anexia Cloud Solutions GmbH, AT
10	2a00:11c0:47:1:47::131	28.9ms	0%	AS47147	AS-ANX - Anexia Cloud Solutions GmbH, AT
11	2a00:12e0:1:4010:194:177:149:118	41.0ms	0%	AS6798	NET4YOU-AS - Net4You Internet GmbH, AT

tracepath -6

 1?: [LOCALHOST]                        0.028ms pmtu 1500
 1:  karsolink-01.net.karsolink.com                        1.282ms 
 1:  karsolink-01.net.karsolink.com                        1.000ms 
 2:  2a12:d8c0:109f:121::a1                                1.040ms 
 3:  2a12:d8c0:109f:106::a2                                3.642ms 
 4:  ae0-303.RT.VSX.PDA.IT.retn.net                        3.972ms 
 5:  2a03:b020::224                                       19.243ms 
 6:  2001:7f8::a5e9:0:1                                   18.088ms 
 7:  2a00:11c0:47:1:47::132                               21.143ms asymm  8 
 8:  2a00:11c0:47:1:47::151                               31.454ms asymm 10 
 9:  2a00:11c0:47:1:47::138                               32.382ms asymm  6 
10:  2a00:11c0:47:1:47::131                               30.824ms asymm  8 
11:  2a00:11c0:47:3::55                                   38.218ms 
12:  2a00:12e0:1000:500:194:177:149:148                   46.034ms 
13:  2a00:12e0:1:4010:194:177:149:118                     47.156ms 
14:  dns1.net4you.net                                     41.303ms reached
     Resume: pmtu 1500 hops 14 back 14

From SLO host (6connect) openRFC 4890 ✓

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

4/4

Echo small (56B) 15.8ms

4/4

Echo 1500B (DF) 15.8ms

yes

Type 1 dest-unreach

443,80

TCP responds on

Path (traceroute + mtr + PTR)

#	IP / PTR	RTT	mtr loss	AS	AS holder
1	fw1-lju.6connect.com 2607:fae0:a000::2	0.2ms	0%*	AS8038	6CONNECT - 6connect, Inc., US
2	*	-	-	-
3	2a03:a100:0:201:1::1	0.6ms	0%	AS56635	XENYA - XENYA inzeniring, proizvodnja in trgovina, d.o.o. Ljubljana, SI
4	e0-1.core1.lju1.he.net 2001:470:1:5be::1	2.4ms	50%	AS6939	HURRICANE - Hurricane Electric LLC, US
5	100ge0-0-0-5.core1.vie1.he.net 2001:470:0:578::1	8.4ms	20%	AS6939	HURRICANE - Hurricane Electric LLC, US
6	2001:7f8:30:0:2:1:0:6798 @VIX / AAIX / SAIX / TIROL-IX / ERA-IX	6.4ms	0%	-	NA
7	2a00:12e0:1000:3::11	6.4ms	0%	AS6798	NET4YOU-AS - Net4You Internet GmbH, AT
8	2a00:12e0:1000:500:194:177:149:148	14.7ms	0%	AS6798	NET4YOU-AS - Net4You Internet GmbH, AT
9	2a00:12e0:1:4010:194:177:149:118	15.8ms	0%	AS6798	NET4YOU-AS - Net4You Internet GmbH, AT
10	dns1.net4you.net 2a00:12e0:101::2	15.8ms	0%	AS6798	NET4YOU-AS - Net4You Internet GmbH, AT

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]                        0.027ms pmtu 9000
 1:  fw1-lju.6connect.com                                  0.777ms 
 1:  fw1-lju.6connect.com                                  0.570ms 
 2:  no reply
 3:  2a03:a100:0:201:1::1                                  1.282ms 
 4:  2a03:a100:0:201:1::1                                  1.159ms pmtu 1500
 4:  e0-1.core1.lju1.he.net                                2.355ms 
 5:  100ge0-0-0-5.core1.vie1.he.net                        8.018ms 
 6:  2001:7f8:30:0:2:1:0:6798                              6.749ms 
 7:  2a00:12e0:1000:3::11                                  6.563ms 
 8:  2a00:12e0:1000:500:194:177:149:148                   15.762ms 
 9:  2a00:12e0:1:4010:194:177:149:118                     16.711ms 
10:  dns1.net4you.net                                     16.271ms reached
     Resume: pmtu 1500 hops 10 back 10

From SLO host (T-2) openRFC 4890 ✓

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

4/4

Echo small (56B) 17.9ms

4/4

Echo 1500B (DF) 18.3ms

yes

Type 1 dest-unreach

443,80

TCP responds on

Path (traceroute + mtr + PTR)

#	IP / PTR	RTT	mtr loss	AS	AS holder
1	*	-	0%*	-
2	2a01:260:1::225	8.5ms	0%*	AS34779	T-2-AS - T-2, d.o.o., SI
3	2a01-260-1-1--9a.core6.t-2.net 2a01:260:1:1::9a	1.9ms	0%*	AS34779	T-2-AS - T-2, d.o.o., SI
4	2a01-260-1-1--c.core6.t-2.net 2a01:260:1:1::c	4.6ms	0%*	AS34779	T-2-AS - T-2, d.o.o., SI
5	2a01-260-1-1--2a.core6.t-2.net 2a01:260:1:1::2a	3.5ms	0%*	AS34779	T-2-AS - T-2, d.o.o., SI
6	2001:7f8:30:0:2:1:0:6798 @VIX / AAIX / SAIX / TIROL-IX / ERA-IX	8.5ms	0%	-	NA
7	2a00:12e0:1000:500:194:177:149:148	16.7ms	0%	AS6798	NET4YOU-AS - Net4You Internet GmbH, AT
8	2a00:12e0:1000:500:194:177:149:148	16.5ms	0%	AS6798	NET4YOU-AS - Net4You Internet GmbH, AT
9	dns1.net4you.net 2a00:12e0:101::2	19.6ms	0%	AS6798	NET4YOU-AS - Net4You Internet GmbH, AT

tracepath -6

 1?: [LOCALHOST]                        0.031ms pmtu 1500
 1:  no reply
 2:  2a01:260:1::225                                       3.328ms 
 3:  2a01-260-1-1--9c.core6.t-2.net                        3.550ms 
 4:  2a01-260-1-1--25.core6.t-2.net                        4.717ms 
 5:  2001:7f8:30:0:2:1:0:6798                              8.410ms asymm  6 
 6:  rt01-vie01.net4you.net                                9.677ms asymm  7 
 7:  2a00:12e0:1000:500:194:177:149:148                   18.641ms asymm  8 
 8:  rt01-vil01.net4you.net                               19.776ms asymm  9 
 9:  dns1.net4you.net                                     18.448ms reached
     Resume: pmtu 1500 hops 9 back 10