AS28929 ASDASD-AS ASDASD srl a socio unico

AS overview

Test target: 2a02:f8::ffff:ffc4 · imap.asdasd.it · address space: mixed · prefixes announced: 1

prefix(es): 2a02:f8::/32

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
`2a02:f8::ffff:ffc4` imap.asdasd.it	drv	✓	✓	refused	refused	✓	✓	✓	refused	refused	✓	✓	✓	refused	refused	✓	✓	✓	?	?	✓	✓	✓	refused	refused	✓	✓	✓	refused	refused	✓	✓	✓	refused	refused	✓

RPKI & ASPA

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

Prefix	RPKI state	Reason	Covering VRP(s)
`2a02:f8::/32`	✓ valid	matched VRP (correct origin, length within maxLength)	AS28929 /32 maxLen 32 (ripe)

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

We probed 35 arbitrary IPv6 address(es) inside AS28929's announced prefix(es). No router inside the prefix responded. The deepest visible hop was 2001:978:2:51::5:2 at hop 24 - that router answers ICMPv6 Echo. This is not in AS28929'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 2026-09-23T12:03:18Z

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) 55.1ms

4/4

Echo 1500B (DF) 55.2ms

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	sox-pn.sox.rs 2001:7f8:1e:8::3a	0.2ms	0%	AS13004	SOX - Serbian Open Exchange DOO, RS
3	2001:7f8:1e:8::3d	0.3ms	0%	AS13004	SOX - Serbian Open Exchange DOO, RS
4	2001:67c:128c::699	17.8ms	0%	-	NA
5	mx.asdasd.it 2a02:f8::ffff:ffc4	53.4ms	0%	AS28929	ASDASD-AS - ASDASD srl a socio unico, IT

tracepath -6

 1?: [LOCALHOST]                        0.014ms pmtu 1500
 1:  _gateway                                              0.623ms 
 1:  _gateway                                              0.744ms 
 2:  sox-pn.sox.rs                                         0.715ms 
 3:  2001:7f8:1e:8::3d                                     0.674ms asymm  2 
 4:  2001:67c:128c::699                                   17.560ms 
 5:  mx.asdasd.it                                         53.191ms reached
     Resume: pmtu 1500 hops 5 back 11

From DE host (Berlin) openRFC 4890 ✓

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

4/4

Echo small (56B) 29.0ms

4/4

Echo 1500B (DF) 29.2ms

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	ae0-2453.cr10.ber01.lwlcom.net 2a06:d1c0::dead:beef:1c02	0.7ms	0%*	AS59645	WYBT-NET - Tobias Fiebig, DE
3	ae0-150.cr10.fra01.lwlcom.net 2a00:c380:b200:230::174	10.1ms	0%	AS50629	LWLCOM - LWLcom GmbH, DE
4	ae0-100.cr10.fra02.lwlcom.net 2a00:c380:b200:230::215	10.1ms	0%	AS50629	LWLCOM - LWLcom GmbH, DE
5	2001:978:2:42::154:c	11.2ms	0%	AS174	COGENT-174 - Cogent Communications, LLC, US
6	be7948.ccr42.fra05.atlas.cogentco.com 2001:550:0:1000::9a36:487e	10.4ms	0%	AS174	COGENT-174 - Cogent Communications, LLC, US
7	be5516.ccr21.muc03.atlas.cogentco.com 2001:550:0:1000::9a36:3e7a	16.1ms	0%	AS174	COGENT-174 - Cogent Communications, LLC, US
8	port-channel5891.ccr91.mil02.atlas.cogentco.com 2001:550:0:1000::9a36:3db5	24.0ms	0%	AS174	COGENT-174 - Cogent Communications, LLC, US
9	be2434.rcr71.vce01.atlas.cogentco.com 2001:550:0:1000::9a36:279e	29.1ms	0%	AS174	COGENT-174 - Cogent Communications, LLC, US
10	2001:978:2:51::5:2	29.1ms	0%	AS174	COGENT-174 - Cogent Communications, LLC, US
11	mx.asdasd.it 2a02:f8::ffff:ffc4	29.0ms	0%	AS28929	ASDASD-AS - ASDASD srl a socio unico, IT

tracepath -6

 1?: [LOCALHOST]                        0.022ms pmtu 1500
 1:  xe-0-0-13-178.gw01.ber01.as59645.net                  0.549ms 
 1:  xe-0-0-13-178.gw01.ber01.as59645.net                  0.552ms 
 2:  ae0-2453.cr10.ber01.lwlcom.net                        0.822ms 
 3:  ae0-150.cr10.fra01.lwlcom.net                        10.403ms asymm  7 
 4:  ae0-100.cr10.fra02.lwlcom.net                        10.639ms asymm  8 
 5:  2001:978:2:42::154:c                                 11.492ms asymm  9 
 6:  be7948.ccr42.fra05.atlas.cogentco.com                20.659ms asymm 10 
 7:  be7944.ccr22.muc03.atlas.cogentco.com                16.828ms asymm 11 
 8:  port-channel5892.ccr92.mil02.atlas.cogentco.com      24.523ms asymm 12 
 9:  be2434.rcr71.vce01.atlas.cogentco.com                29.473ms asymm 13 
10:  2001:978:2:51::5:2                                   29.102ms asymm 14 
11:  mx.asdasd.it                                         29.549ms reached
     Resume: pmtu 1500 hops 11 back 15

From DE host (Düsseldorf) openRFC 4890 ✓

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

4/4

Echo small (56B) 23.0ms

4/4

Echo 1500B (DF) 23.3ms

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	eth1-0-12-h5594.edge5-dus1.bb.wiit.network 2001:4ba0:92f4:3::1	24.4ms	0%	AS24961	MYLOC-AS - WIIT AG, DE
3	lag10-h5f01.agr4-dus1.bb.wiit.network 2001:4ba0:ffe9:7c::1	155.7ms	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	lag0-vl1001.core4-dus1.bb.wiit.network 2001:4ba0:ffe9:123::3	0.5ms	0%	AS24961	MYLOC-AS - WIIT AG, DE
6	2001:978:2:6::20	0.7ms	0%	AS174	COGENT-174 - Cogent Communications, LLC, US
7	be3690.rcr21.dus01.atlas.cogentco.com 2001:550:0:1000::9a19:1021	1.8ms	0%	AS174	COGENT-174 - Cogent Communications, LLC, US
8	be2361.ccr42.fra05.atlas.cogentco.com 2001:550:0:1000::9a36:3b5d	5.1ms	0%	AS174	COGENT-174 - Cogent Communications, LLC, US
9	be7944.ccr22.muc03.atlas.cogentco.com 2001:550:0:1000::9a36:4b61	10.2ms	0%	AS174	COGENT-174 - Cogent Communications, LLC, US
10	port-channel5891.ccr91.mil02.atlas.cogentco.com 2001:550:0:1000::9a36:3db5	18.5ms	0%	AS174	COGENT-174 - Cogent Communications, LLC, US
11	be2155.rcr71.vce01.atlas.cogentco.com 2001:550:0:1000::9a36:2612	23.1ms	0%	AS174	COGENT-174 - Cogent Communications, LLC, US
12	2001:978:2:51::5:2	23.3ms	0%	AS174	COGENT-174 - Cogent Communications, LLC, US
13	mx.asdasd.it 2a02:f8::ffff:ffc4	22.9ms	0%	AS28929	ASDASD-AS - ASDASD srl a socio unico, IT

tracepath -6

 1?: [LOCALHOST]                        0.012ms pmtu 1500
 1:  xe-0-0-12-142.gw01.dus01.as59645.net                  0.380ms 
 1:  xe-0-0-12-142.gw01.dus01.as59645.net                  0.531ms 
 2:  eth1-0-12-h5594.edge5-dus1.bb.wiit.network           23.191ms 
 3:  no reply
 4:  lag11.core3-dus1.bb.wiit.network                      0.323ms 
 5:  lag0-vl1001.core4-dus1.bb.wiit.network                0.557ms 
 6:  2001:978:2:6::20                                      0.909ms 
 7:  be3690.rcr21.dus01.atlas.cogentco.com                 1.745ms 
 8:  be5490.ccr41.fra05.atlas.cogentco.com                 4.893ms asymm  9 
 9:  be7944.ccr22.muc03.atlas.cogentco.com                10.537ms asymm 10 
10:  port-channel5891.ccr91.mil02.atlas.cogentco.com      18.848ms asymm 11 
11:  be2434.rcr71.vce01.atlas.cogentco.com                23.331ms asymm 12 
12:  2001:978:2:51::5:2                                   23.593ms asymm 13 
13:  mx.asdasd.it                                         23.482ms reached
     Resume: pmtu 1500 hops 13 back 14

From NL host (go6lab) openRFC 4890 ✓

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

4/4

Echo small (56B) 34.2ms

4/4

Echo 1500B (DF) 34.4ms

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	1.2ms	0%	AS203993	GNA-DC1-AS - S.J.M. Steffann, NL
2	*	-	-	-
3	2a00:1ca8:1::194	3.7ms	0%	AS50673	Serverius-as - Serverius Holding B.V., NL
4	2a03:3f40::10:41	4.1ms	0%	AS50673	Serverius-as - Serverius Holding B.V., NL
5	2001:978:2:40::3:1	5.1ms	0%	AS174	COGENT-174 - Cogent Communications, LLC, US
6	be3458.ccr42.ams03.atlas.cogentco.com 2001:550:0:1000::9a36:27b9	6.6ms	0%	AS174	COGENT-174 - Cogent Communications, LLC, US
7	be3343.ccr41.fra05.atlas.cogentco.com 2001:550:0:1000::9a36:3e8d	12.5ms	0%	AS174	COGENT-174 - Cogent Communications, LLC, US
8	be7944.ccr22.muc03.atlas.cogentco.com 2001:550:0:1000::9a36:4b61	17.3ms	0%	AS174	COGENT-174 - Cogent Communications, LLC, US
9	port-channel5892.ccr92.mil02.atlas.cogentco.com 2001:550:0:1000::9a36:3ed9	26.4ms	0%	AS174	COGENT-174 - Cogent Communications, LLC, US
10	be2155.rcr71.vce01.atlas.cogentco.com 2001:550:0:1000::9a36:2612	33.1ms	0%	AS174	COGENT-174 - Cogent Communications, LLC, US
11	2001:978:2:51::5:2	39.3ms	0%	AS174	COGENT-174 - Cogent Communications, LLC, US
12	mx.asdasd.it 2a02:f8::ffff:ffc4	30.6ms	0%	AS28929	ASDASD-AS - ASDASD srl a socio unico, IT

tracepath -6

 1?: [LOCALHOST]                        0.059ms pmtu 1500
 1:  2a00:8642:42::2                                       4.122ms 
 1:  2a00:8642:42::2                                       3.488ms 
 2:  gw.friends.steffann.nl                                3.958ms 
 3:  2a00:1ca8:1::194                                      3.578ms 
 4:  2a03:3f40::10:41                                      4.663ms 
 5:  2001:978:2:40::3:1                                    6.711ms 
 6:  be3457.ccr41.ams03.atlas.cogentco.com                 7.788ms 
 7:  be3343.ccr41.fra05.atlas.cogentco.com                14.371ms 
 8:  be5516.ccr21.muc03.atlas.cogentco.com                20.061ms 
 9:  port-channel5891.ccr91.mil02.atlas.cogentco.com      29.085ms 
10:  be2155.rcr71.vce01.atlas.cogentco.com                35.830ms 
11:  2001:978:2:51::5:2                                   36.967ms 
12:  mx.asdasd.it                                         35.265ms reached
     Resume: pmtu 1500 hops 12 back 12

From ITA host (Karsolink) openRFC 4890 ✓

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

4/4

Echo small (56B) 14.8ms

3/4

Echo 1500B (DF) 15.3ms

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	*	-	0%*	-
3	*	-	-	-
4	2a03:b020:1:51::a	10.2ms	0%	AS41327	FIBERTELECOM-AS - Fiber Telecom S.p.A., IT
5	2a03:b020::246	10.0ms	0%	AS41327	FIBERTELECOM-AS - Fiber Telecom S.p.A., IT
6	2001:978:2:2a::e7:1	10.7ms	0%	AS174	COGENT-174 - Cogent Communications, LLC, US
7	be10062.agr71.mil02.atlas.cogentco.com 2001:550:0:1000::9a19:c55	10.6ms	0%	AS174	COGENT-174 - Cogent Communications, LLC, US
8	port-channel5653.ccr92.mil02.atlas.cogentco.com 2001:550:0:1000::8275:2b5	10.2ms	0%	AS174	COGENT-174 - Cogent Communications, LLC, US
9	be2434.rcr71.vce01.atlas.cogentco.com 2001:550:0:1000::9a36:279e	101.8ms	0%	AS174	COGENT-174 - Cogent Communications, LLC, US
10	2001:978:2:51::5:2	15.1ms	0%	AS174	COGENT-174 - Cogent Communications, LLC, US
11	mx.asdasd.it 2a02:f8::ffff:ffc4	100.5ms	0%	AS28929	ASDASD-AS - ASDASD srl a socio unico, IT

tracepath -6

 1?: [LOCALHOST]                        0.035ms pmtu 1500
 1:  karsolink-01.net.karsolink.com                        0.995ms 
 1:  karsolink-01.net.karsolink.com                        1.186ms 
 2:  2a12:d8c0:109f:121::a1                                0.901ms 
 3:  2a12:d8c0:101f:6::1                                  10.884ms 
 4:  2a03:b020:1:51::a                                    12.515ms 
 5:  2a03:b020::246                                       11.183ms 
 6:  2001:978:2:2a::e7:1                                  11.723ms 
 7:  be10062.agr71.mil02.atlas.cogentco.com               11.283ms 
 8:  port-channel5653.ccr92.mil02.atlas.cogentco.com      12.351ms 
 9:  be2434.rcr71.vce01.atlas.cogentco.com                15.878ms 
10:  2001:978:2:51::5:2                                   25.314ms 
11:  mx.asdasd.it                                         15.547ms reached
     Resume: pmtu 1500 hops 11 back 11

From SLO host (6connect) openRFC 4890 ✓

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

4/4

Echo small (56B) 26.9ms

4/4

Echo 1500B (DF) 27.1ms

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	0.4ms	0%*	AS8038	6CONNECT - 6connect, Inc., US
2	*	-	-	-
3	2a00:ee1:800:9::1	1.9ms	-	AS5603	SIOL-NET - Telekom Slovenije, d.d., SI
4	2a00:ee0:1:15::2	1.1ms	0%	AS5603	SIOL-NET - Telekom Slovenije, d.d., SI
5	2001:1900:5:2:2:0:11c:d49	27.9ms	0%	AS3356	LEVEL3 - Level 3 Parent, LLC, US
6	be3101.ccr81.vie01.atlas.cogentco.com 2001:978:3::199	8.3ms	0%	AS174	COGENT-174 - Cogent Communications, LLC, US
7	be5456.ccr21.muc03.atlas.cogentco.com 2001:550:0:1000::9a36:48a5	26.9ms	0%	AS174	COGENT-174 - Cogent Communications, LLC, US
8	port-channel5891.ccr91.mil02.atlas.cogentco.com 2001:550:0:1000::9a36:3db5	22.6ms	0%	AS174	COGENT-174 - Cogent Communications, LLC, US
9	be2155.rcr71.vce01.atlas.cogentco.com 2001:550:0:1000::9a36:2612	27.4ms	0%	AS174	COGENT-174 - Cogent Communications, LLC, US
10	2001:978:2:51::5:2	43.3ms	0%	AS174	COGENT-174 - Cogent Communications, LLC, US
11	mx.asdasd.it 2a02:f8::ffff:ffc4	27.0ms	0%	AS28929	ASDASD-AS - ASDASD srl a socio unico, IT

tracepath -6

 1?: [LOCALHOST]                        0.016ms pmtu 9000
 1:  fw1-lju.6connect.com                                  0.706ms 
 1:  fw1-lju.6connect.com                                  0.827ms 
 2:  no reply
 3:  2a00:ee1:800:9::1                                     3.344ms 
 4:  2a00:ee0:1:15::2                                      1.519ms asymm  3 
 5:  2a00:ee0:1:15::2                                     65.161ms pmtu 1500
 5:  2001:1900:5:2:2:0:11c:d49                             7.294ms asymm  7 
 6:  be3101.ccr81.vie01.atlas.cogentco.com                 9.244ms asymm  7 
 7:  be5456.ccr21.muc03.atlas.cogentco.com                26.942ms asymm  8 
 8:  port-channel5891.ccr91.mil02.atlas.cogentco.com      22.683ms asymm  9 
 9:  be2155.rcr71.vce01.atlas.cogentco.com                27.355ms asymm 10 
10:  2001:978:2:51::5:2                                   27.672ms asymm 11 
11:  mx.asdasd.it                                         27.488ms reached
     Resume: pmtu 1500 hops 11 back 12

From SLO host (T-2) openRFC 4890 ✓

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

4/4

Echo small (56B) 34.1ms

4/4

Echo 1500B (DF) 34.6ms

yes

Type 1 dest-unreach

443,80

TCP responds on

Path (traceroute + mtr + PTR)

#	IP / PTR	RTT	mtr loss	AS	AS holder
1	*	-	-	-
2	2a01:260:1::225	12.0ms	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	11.3ms	0%*	AS34779	T-2-AS - T-2, d.o.o., SI
4	*	-	0%	-
5	system.0.ear1.Sofia2.level3.net 2001:4c08::4f	25.3ms	0%	AS3356	LEVEL3 - Level 3 Parent, LLC, US
6	be3356.ccr31.sof02.atlas.cogentco.com 2001:978:3::1cd	31.8ms	0%	AS174	COGENT-174 - Cogent Communications, LLC, US
7	port-channel4828.ccr92.mil02.atlas.cogentco.com 2001:550:0:1000::9a36:4948	29.3ms	0%	AS174	COGENT-174 - Cogent Communications, LLC, US
8	port-channel3280.ccr91.mil02.atlas.cogentco.com 2001:550:0:1000::8275:33a2	40.9ms	0%	AS174	COGENT-174 - Cogent Communications, LLC, US
9	*	-	0%	-
10	2001:978:2:51::5:2	45.4ms	0%	AS174	COGENT-174 - Cogent Communications, LLC, US
11	mx.asdasd.it 2a02:f8::ffff:ffc4	31.1ms	0%	AS28929	ASDASD-AS - ASDASD srl a socio unico, IT

tracepath -6

 1?: [LOCALHOST]                        0.031ms pmtu 1500
 1:  no reply
 2:  2a01:260:1::225                                       2.678ms 
 3:  2a01-260-1-1--9c.core6.t-2.net                        2.268ms 
 4:  2001:1900:5:2:2::3ed5                                 7.290ms asymm  5 
 5:  lo0.0.edge1.Milan1.level3.net                        28.223ms asymm  6 
 6:  be3356.ccr31.sof02.atlas.cogentco.com                22.306ms 
 7:  be3421.ccr51.beg03.atlas.cogentco.com                26.829ms 
 8:  port-channel3280.ccr91.mil02.atlas.cogentco.com      29.641ms asymm  7 
 9:  2001:978:2:51::5:2                                   23.490ms 
10:  mx.asdasd.it                                         23.941ms reached
     Resume: pmtu 1500 hops 10 back 10