AS47147 AS-ANX Anexia Cloud Solutions GmbH

AS overview

Test target: 2a00:11c0:48::1 · static prefix probe · address space: mixed · prefixes announced: 2

prefix(es): 2a00:11c0:47::/48, 2a00:11c0:48::/48

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 / 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
`2a00:11c0:48::1`	prb	✓	✓	?	?	-	✓	✓	?	?	-	✓	✓	?	?	-	✓	✓	?	?	-	✓	✓	?	?	-	✓	✓	?	?	-	✓	✓	?	?	-

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

VIX / AAIX / SAIX / TIROL-IX / ERA-IX member - Selective peering, peering member, since 2017-11-11. IPv6 LAN: 2001:7f8:30:0:1:1:4:7147. Locations: -.

RPKI & ASPA

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

Prefix	RPKI state	Reason	Covering VRP(s)
`2a00:11c0:47::/48`	✓ valid	matched VRP (correct origin, length within maxLength)	AS47147 /48 maxLen 48 (ripe); AS42473 /32 maxLen 128 (ripe)
`2a00:11c0:48::/48`	✓ valid	matched VRP (correct origin, length within maxLength)	AS47147 /48 maxLen 128 (ripe); AS42473 /32 maxLen 128 (ripe)

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

At least one router inside AS47147's announced prefix replied during the random-target probe. Hop(s): 2a00:11c0:47:1:47::129, 2a00:11c0:47:1:47::132, 2a00:11c0:47:1:47::136, 2a00:11c0:47:1:47::138, 2a00:11c0:47:1:47::140. 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 2026-09-23T13:32:30Z

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) 17.4ms

4/4

Echo 1500B (DF) 17.4ms

Type 1 dest-unreach

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	0.6ms	0%	AS13004	SOX - Serbian Open Exchange DOO, RS
3	et-2-0-5-1337.bbr01.anx03.vie.at.anexia-it.net @VIX / AAIX / SAIX / TIROL-IX / ERA-IX 2001:7f8:30:0:1:1:4:7147	13.0ms	0%	-	NA
4	2a00:11c0:47:1:47::132	13.9ms	0%	AS47147	AS-ANX - Anexia Cloud Solutions GmbH, AT
5	*	-	0%	-
6	*	-	-	-
7	*	-	-	-
8	*	-	-	-
9	*	-	-	-
10	*	-	-	-
11	*	-	-	-
12	*	-	-	-
13	*	-	-	-
14	*	-	-	-
15	*	-	-	-

tracepath -6

 1?: [LOCALHOST]                        0.018ms pmtu 1500
 1:  _gateway                                              0.556ms 
 1:  _gateway                                              0.700ms 
 2:  2001:7f8:1e::4                                        0.773ms 
 3:  et-2-0-5-1337.bbr01.anx03.vie.at.anexia-it.net       11.450ms 
 4:  2a00:11c0:47:1:47::132                               11.524ms 
 5:  no reply
 6:  no reply
 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
     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) 28.0ms

4/4

Echo 1500B (DF) 28.4ms

Type 1 dest-unreach

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	0.3ms	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	retn.bcix.de 2001:7f8:19:1::232a:1	10.6ms	0%	-	NA
4	RT.ESH.FKT.DE.retn.net 2a02:2d8::57f5:e0b7	14.1ms	0%	AS9002	RETN-AS - RETN Limited, GB
5	GW-AS47147.retn.net 2a02:2d8:3:e001:232a::1	10.9ms	10%	AS9002	RETN-AS - RETN Limited, GB
6	2a00:11c0:47:1:47::146	15.0ms	0%	AS47147	AS-ANX - Anexia Cloud Solutions GmbH, AT
7	2a00:11c0:47:1:47::151	27.5ms	10%	AS47147	AS-ANX - Anexia Cloud Solutions GmbH, AT
8	2a00:11c0:47:1:47::129	22.2ms	0%	AS47147	AS-ANX - Anexia Cloud Solutions GmbH, AT
9	*	-	0%	-
10	*	-	-	-
11	*	-	-	-
12	*	-	-	-
13	*	-	-	-
14	*	-	-	-
15	*	-	-	-

Rate-limited ICMPv6: hop 5, hop 7 (loss between 5% and 95% across mtr cycles - the router replies but only sometimes).

tracepath -6

 1?: [LOCALHOST]                        0.024ms pmtu 1500
 1:  xe-0-0-13-178.gw01.ber01.as59645.net                  0.622ms 
 1:  xe-0-0-13-178.gw01.ber01.as59645.net                  0.431ms 
 2:  ae0-2453.cr10.ber01.lwlcom.net                        0.892ms 
 3:  retn.bcix.de                                         14.485ms asymm  5 
 4:  RT.ESH.FKT.DE.retn.net                               11.214ms asymm  5 
 5:  GW-AS47147.retn.net                                  11.237ms asymm  4 
 6:  2a00:11c0:47:1:47::146                               11.349ms asymm  5 
 7:  2a00:11c0:47:1:47::151                               27.901ms asymm 10 
 8:  2a00:11c0:47:1:47::129                               22.537ms 
 9:  no reply
10:  no reply
11:  no reply
12:  no reply
13:  no reply
14:  no reply
15:  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) 19.9ms

4/4

Echo 1500B (DF) 19.7ms

Type 1 dest-unreach

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	1.1ms	0%	AS24961	MYLOC-AS - WIIT AG, DE
3	*	-	-	-
4	lag30.core3-dus1.bb.wiit.network 2001:4ba0:ffe9:109::2	0.2ms	0%	AS24961	MYLOC-AS - WIIT AG, DE
5	lag8.core1-dus-ix.bb.wiit.network 2001:4ba0:ffe9:8::2	0.4ms	0%	AS24961	MYLOC-AS - WIIT AG, DE
6	ae3-1337.bbr02.anx25.fra.de.anexia-it.net 2001:7f8::a5e9:0:3	4.1ms	0%	-	NA
7	2a00:11c0:47:1:47::140	7.4ms	10%	AS47147	AS-ANX - Anexia Cloud Solutions GmbH, AT
8	2a00:11c0:47:1:47::138	7.2ms	0%	AS47147	AS-ANX - Anexia Cloud Solutions GmbH, AT
9	2a00:11c0:47:1:47::136	15.4ms	0%	AS47147	AS-ANX - Anexia Cloud Solutions GmbH, AT
10	*	-	0%	-
11	*	-	-	-
12	*	-	-	-
13	*	-	-	-
14	*	-	-	-
15	*	-	-	-

Rate-limited ICMPv6: hop 7 (loss between 5% and 95% across mtr cycles - the router replies but only sometimes).

tracepath -6

 1?: [LOCALHOST]                        0.024ms pmtu 1500
 1:  xe-0-0-12-142.gw01.dus01.as59645.net                  0.352ms 
 1:  xe-0-0-12-142.gw01.dus01.as59645.net                  0.274ms 
 2:  eth1-0-12-h5594.edge5-dus1.bb.wiit.network            1.252ms 
 3:  no reply
 4:  lag30.core3-dus1.bb.wiit.network                      0.433ms 
 5:  lag2.core1-dus-ix.bb.wiit.network                     0.529ms 
 6:  ae3-1337.bbr02.anx25.fra.de.anexia-it.net             4.236ms 
 7:  2a00:11c0:47:1:47::140                                7.555ms asymm  6 
 8:  2a00:11c0:47:1:47::138                               10.773ms asymm  6 
 9:  2a00:11c0:47:1:47::136                               15.678ms asymm  7 
10:  no reply
11:  no reply
12:  no reply
13:  no reply
14:  no reply
15:  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) 32.6ms

3/4

Echo 1500B (DF) 35.3ms

Type 1 dest-unreach

TCP responds on

Path (traceroute + mtr + PTR)

#	IP / PTR	RTT	mtr loss	AS	AS holder
1	2a00:8642:42::2	0.9ms	0%	AS203993	GNA-DC1-AS - S.J.M. Steffann, NL
2	*	-	0%*	-
3	*	-	90%	-
4	ae3-1337.bbr02.anx63.ams.nl.anexia-it.net 2001:7f8:1::a504:7147:1	5.5ms	0%	-	NA
5	2a00:11c0:47:1:47::213	32.3ms	0%	AS47147	AS-ANX - Anexia Cloud Solutions GmbH, AT
6	2a00:11c0:47:1:47::136	32.5ms	0%	AS47147	AS-ANX - Anexia Cloud Solutions GmbH, AT
7	*	-	0%	-
8	*	-	-	-
9	*	-	-	-
10	*	-	-	-
11	*	-	-	-
12	*	-	-	-
13	*	-	-	-
14	*	-	-	-
15	*	-	-	-

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

tracepath -6

 1?: [LOCALHOST]                        0.059ms pmtu 1500
 1:  2a00:8642:42::2                                       3.537ms 
 1:  2a00:8642:42::2                                       2.101ms 
 2:  gw.friends.steffann.nl                                3.305ms 
 3:  ccr2-ccr1.dc1.nogalliance.org                         3.074ms asymm  2 
 4:  ae3-1337.bbr02.anx63.ams.nl.anexia-it.net             5.729ms asymm  5 
 5:  2a00:11c0:47:1:47::213                               27.992ms asymm 10 
 6:  2a00:11c0:47:1:47::136                               28.827ms asymm 11 
 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
     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) 25.4ms

3/4

Echo 1500B (DF) 26.1ms

Type 1 dest-unreach

TCP responds on

Path (traceroute + mtr + PTR)

#	IP / PTR	RTT	mtr loss	AS	AS holder
1	*	-	-	-
2	*	-	0%*	-
3	2a12:d8c0:109f:106::a2	3.1ms	40%	AS204471	KARSOLINK - 2S Computers SRL, IT
4	2a03:b020:1:51::a	10.3ms	0%	AS41327	FIBERTELECOM-AS - Fiber Telecom S.p.A., IT
5	2a03:b020::224	18.8ms	10%	AS41327	FIBERTELECOM-AS - Fiber Telecom S.p.A., IT
6	2001:7f8::a5e9:0:1	17.4ms	0%	-	NA
7	2a00:11c0:47:1:47::146	19.5ms	0%	AS47147	AS-ANX - Anexia Cloud Solutions GmbH, AT
8	2a00:11c0:47:1:47::151	30.5ms	0%	AS47147	AS-ANX - Anexia Cloud Solutions GmbH, AT
9	2a00:11c0:47:1:47::129	34.0ms	-	AS47147	AS-ANX - Anexia Cloud Solutions GmbH, AT
10	*	-	-	-
11	*	-	-	-
12	*	-	-	-
13	*	-	-	-
14	*	-	-	-
15	*	-	-	-

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]                        0.022ms pmtu 1500
 1:  no reply
 2:  2a12:d8c0:109f:121::a1                                0.589ms 
 3:  2a12:d8c0:109f:106::a2                                3.691ms 
 4:  ae0-303.RT.VSX.PDA.IT.retn.net                        3.846ms 
 5:  2a03:b020::224                                       18.948ms 
 6:  GW-AS47147.retn.net                                  35.526ms 
 7:  2a00:11c0:47:1:47::146                               78.948ms asymm  9 
 8:  2a00:11c0:47:1:47::151                               30.947ms asymm 10 
 9:  2a00:11c0:47:1:47::129                               31.121ms asymm  8 
10:  no reply
11:  no reply
12:  no reply
13:  no reply
14:  no reply
15:  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) 30.9ms

4/4

Echo 1500B (DF) 33.0ms

Type 1 dest-unreach

TCP responds on

Path (traceroute + mtr + PTR)

#	IP / PTR	RTT	mtr loss	AS	AS holder
1	fw1-lju.6connect.com 2607:fae0:a000::2	0.3ms	0%*	AS8038	6CONNECT - 6connect, Inc., US
2	*	-	-	-
3	*	-	80%	-
4	2a00:ee0:1:15::2	1.1ms	0%	AS5603	SIOL-NET - Telekom Slovenije, d.d., SI
5	*	-	-	-
6	2a00:11c0:47:1:47::146	15.7ms	0%	AS47147	AS-ANX - Anexia Cloud Solutions GmbH, AT
7	2a00:11c0:47:1:47::151	25.8ms	0%	AS47147	AS-ANX - Anexia Cloud Solutions GmbH, AT
8	2a00:11c0:47:1:47::129	20.8ms	0%	AS47147	AS-ANX - Anexia Cloud Solutions GmbH, AT
9	*	-	0%	-
10	*	-	-	-
11	*	-	-	-
12	*	-	-	-
13	*	-	-	-
14	*	-	-	-
15	*	-	-	-

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

tracepath -6

 1?: [LOCALHOST]                        0.022ms pmtu 9000
 1:  fw1-lju.6connect.com                                  0.513ms 
 1:  fw1-lju.6connect.com                                  0.623ms 
 2:  no reply
 3:  no reply
 4:  2a00:ee0:1:15::2                                      1.545ms asymm  3 
 5:  2a00:ee0:1:15::2                                      1.459ms pmtu 1500
 5:  no reply
 6:  2a00:11c0:47:1:47::146                               16.358ms asymm 12 
 7:  2a00:11c0:47:1:47::151                               90.496ms asymm 12 
 8:  2a00:11c0:47:1:47::129                               20.621ms asymm 12 
 9:  no reply
10:  no reply
11:  no reply
12:  no reply
13:  no reply
14:  no reply
15:  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) 23.6ms

4/4

Echo 1500B (DF) 15.2ms

Type 1 dest-unreach

TCP responds on

Path (traceroute + mtr + PTR)

#	IP / PTR	RTT	mtr loss	AS	AS holder
1	*	-	0%*	-
2	2a01:260:1::225	11.3ms	0%*	AS34779	T-2-AS - T-2, d.o.o., SI
3	2a01-260-1-1--9c.core6.t-2.net 2a01:260:1:1::9c	2.3ms	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	3.6ms	0%*	AS34779	T-2-AS - T-2, d.o.o., SI
5	et-2-0-5-1337.bbr01.anx03.vie.at.anexia-it.net @VIX / AAIX / SAIX / TIROL-IX / ERA-IX 2001:7f8:30:0:1:1:4:7147	7.5ms	0%	-	NA
6	2a00:11c0:47:1:47::132	11.8ms	0%	AS47147	AS-ANX - Anexia Cloud Solutions GmbH, AT
7	*	-	0%	-
8	*	-	-	-
9	*	-	-	-
10	*	-	-	-
11	*	-	-	-
12	*	-	-	-
13	*	-	-	-
14	*	-	-	-
15	*	-	-	-

tracepath -6

 1?: [LOCALHOST]                        0.034ms pmtu 1500
 1:  no reply
 2:  2a01:260:1::225                                       3.555ms 
 3:  2a01-260-1-1--9c.core6.t-2.net                        2.523ms 
 4:  2a01-260-1-1--38.core6.t-2.net                        2.351ms asymm  3 
 5:  2a01-260-1-1--2a.core6.t-2.net                        4.403ms asymm  4 
 6:  et-2-0-5-1337.bbr01.anx03.vie.at.anexia-it.net        9.016ms asymm  5 
 7:  2a00:11c0:47:1:47::132                               13.415ms asymm  6 
 8:  no reply
 9:  no reply
10:  no reply
11:  no reply
12:  no reply
13:  no reply
14:  no reply
15:  no reply
     Too many hops: pmtu 1500
     Resume: pmtu 1500