AS57394 EPIC-NETWORKS-AS EPIC NETWORKS S.R.L.

AS overview

Test target: 2a03:91c0::ffff · static prefix probe · address space: mixed · prefixes announced: 1

prefix(es): 2a03:91c0::/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
`2a03:91c0::ffff`	prb	✓	✓	?	?	✓	✓	✓	?	?	✓	✓	✓	?	?	✓	✓	✓	?	?	✓	✓	✗	?	?	✓	✓	✓	?	?	✓	✓	✓	?	?	✓

RPKI & ASPA

0 of 1 prefix(es) covered by a valid ROA, 1 not-found.

Prefix	RPKI state	Reason	Covering VRP(s)
`2a03:91c0::/32`	- not-found	no covering VRP

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

We probed 35 arbitrary IPv6 address(es) inside AS57394's announced prefix(es). No router inside the prefix responded. The deepest visible hop was 2001:978:2:ca::5:2 at hop 14 - that router answers ICMPv6 Echo. This is not in AS57394'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 2026-09-23T12:03:33Z

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) 51.3ms

4/4

Echo 1500B (DF) 51.3ms

yes

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	sox-pn.sox.rs 2001:7f8:1e:8::3a	0.4ms	0%	AS13004	SOX - Serbian Open Exchange DOO, RS
3	2001:7f8:1e:8::3d	0.6ms	0%	AS13004	SOX - Serbian Open Exchange DOO, RS
4	2001:67c:128c::699	25.7ms	0%	-	NA
5	2a03:91c0::ffff	50.2ms	0%	AS57394	EPIC-NETWORKS-AS - EPIC NETWORKS S.R.L., IT

tracepath -6

 1?: [LOCALHOST]                        0.013ms pmtu 1500
 1:  _gateway                                              0.323ms 
 1:  _gateway                                              0.310ms 
 2:  sox-pn.sox.rs                                         0.339ms 
 3:  2001:7f8:1e:8::3d                                     0.485ms asymm  2 
 4:  2001:67c:128c::699                                   17.986ms 
 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) 30.2ms

4/4

Echo 1500B (DF) 30.2ms

yes

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	1.3ms	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	10.2ms	0%	AS50629	LWLCOM - LWLcom GmbH, DE
5	ae0-10.cr10.fra06.lwlcom.net 2a00:c380:b200:230::236	9.9ms	0%	AS50629	LWLCOM - LWLcom GmbH, DE
6	ams-ix.1-ix.net 2001:7f8:115:1::7	21.1ms	0%	-	NA
7	ams-ix.ipv6.itgate.net 2001:7f8:1::a501:2779:1	22.3ms	0%	-	NA
8	if-0-2-0-1.Muttley-Monster.TRN.ipv6.itgate.net 2001:1418:1::10e2	26.8ms	0%	AS12779	ITGATE - IT.Gate S.p.A., IT
9	2a03:91c0::ffff	30.2ms	0%	AS57394	EPIC-NETWORKS-AS - EPIC NETWORKS S.R.L., IT

tracepath -6

 1?: [LOCALHOST]                        0.035ms pmtu 1500
 1:  xe-0-0-13-178.gw01.ber01.as59645.net                  0.561ms 
 1:  xe-0-0-13-178.gw01.ber01.as59645.net                  0.551ms 
 2:  ae0-2453.cr10.ber01.lwlcom.net                        0.986ms 
 3:  ae0-150.cr10.fra01.lwlcom.net                        10.585ms asymm  7 
 4:  ae0-100.cr10.fra02.lwlcom.net                        10.626ms asymm  8 
 5:  ae0-10.cr10.fra06.lwlcom.net                         10.682ms asymm  7 
 6:  ams-ix.1-ix.net                                      20.240ms asymm  8 
 7:  ams-ix.ipv6.itgate.net                               23.971ms asymm  6 
 8:  if-0-2-0-1.Muttley-Monster.TRN.ipv6.itgate.net       27.275ms 
 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) 17.7ms

4/4

Echo 1500B (DF) 17.8ms

yes

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	0.3ms	0%*	AS59645	WYBT-NET - Tobias Fiebig, DE
2	eth1-0-12-h5594.edge5-dus1.bb.wiit.network 2001:4ba0:92f4:3::1	1.0ms	0%	AS24961	MYLOC-AS - WIIT AG, DE
3	lag13.agr3-dus3.bb.wiit.network 2001:4ba0:ffe9:7d::1	64.9ms	0%	AS24961	MYLOC-AS - WIIT AG, DE
4	lag30.core3-dus1.bb.wiit.network 2001:4ba0:ffe9:109::2	0.3ms	0%	AS24961	MYLOC-AS - WIIT AG, DE
5	lag2.core1-dus-ix.bb.wiit.network 2001:4ba0:ffe9:4f::1	0.4ms	0%	AS24961	MYLOC-AS - WIIT AG, DE
6	de-cix.FRA.ipv6.itgate.net 2001:7f8::31eb:0:1	4.6ms	0%	-	NA
7	if-0-2-0-1.Muttley-Monster.TRN.ipv6.itgate.net 2001:1418:1::10e2	14.6ms	0%	AS12779	ITGATE - IT.Gate S.p.A., IT
8	2a03:91c0::ffff	17.6ms	0%	AS57394	EPIC-NETWORKS-AS - EPIC NETWORKS S.R.L., IT

tracepath -6

 1?: [LOCALHOST]                        0.017ms pmtu 1500
 1:  xe-0-0-12-142.gw01.dus01.as59645.net                  0.477ms 
 1:  xe-0-0-12-142.gw01.dus01.as59645.net                  0.367ms 
 2:  eth1-0-12-h5594.edge5-dus1.bb.wiit.network            1.291ms 
 3:  no reply
 4:  lag11.core3-dus1.bb.wiit.network                      0.432ms 
 5:  lag2.core1-dus-ix.bb.wiit.network                     0.618ms 
 6:  de-cix.FRA.ipv6.itgate.net                            4.670ms 
 7:  if-0-2-0-1.Muttley-Monster.TRN.ipv6.itgate.net       14.886ms 
 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 NL host (go6lab) openRFC 4890 ✓

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

4/4

Echo small (56B) 22.1ms

4/4

Echo 1500B (DF) 21.8ms

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	2.7ms	0%	AS203993	GNA-DC1-AS - S.J.M. Steffann, NL
2	*	-	0%*	-
3	ccr2-ccr1.dc1.nogalliance.org 2a00:8642:dc1:2::b	2.3ms	10%	AS203993	GNA-DC1-AS - S.J.M. Steffann, NL
4	ams-ix.ipv6.itgate.net 2001:7f8:1::a501:2779:1	4.4ms	0%	-	NA
5	if-0-2-0-1.Muttley-Monster.TRN.ipv6.itgate.net 2001:1418:1::10e2	22.3ms	0%	AS12779	ITGATE - IT.Gate S.p.A., IT
6	2a03:91c0::ffff	22.9ms	0%	AS57394	EPIC-NETWORKS-AS - EPIC NETWORKS S.R.L., IT

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

tracepath -6

 1?: [LOCALHOST]                        0.116ms pmtu 1500
 1:  2a00:8642:42::2                                       1.363ms 
 1:  2a00:8642:42::2                                       1.705ms 
 2:  no reply
 3:  ccr2-ccr1.dc1.nogalliance.org                         1.743ms asymm  2 
 4:  ams-ix.ipv6.itgate.net                                5.036ms asymm  3 
 5:  if-0-2-0-1.Muttley-Monster.TRN.ipv6.itgate.net       21.195ms asymm  4 
 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 ITA host (Karsolink) echo onlyRFC 4890 ✓

filter likely at: destination AS57394 (EPIC-NETWORKS-AS) · min PMTU on path: 1500

4/4

Echo small (56B) 12.3ms

0/4

Echo 1500B (DF) -

yes

Type 1 dest-unreach

TCP responds on

Path (traceroute + mtr + PTR)

#	IP / PTR	RTT	mtr loss	AS	AS holder
1	*	-	0%*	-
2	*	-	0%*	-
3	2a12:d8c0:101f:6::1	9.9ms	-	AS204471	KARSOLINK - 2S Computers SRL, IT
4	itgate.minap.it 2001:7f8:c5::a501:2779:1	10.0ms	0%	AS12779	ITgate S.p.A.
5	if-0-2-0-1.Muttley-Monster.TRN.ipv6.itgate.net 2001:1418:1::10e2	12.1ms	20%	AS12779	ITGATE - IT.Gate S.p.A., IT
6	2a03:91c0::ffff	11.9ms	0%	AS57394	EPIC-NETWORKS-AS - EPIC NETWORKS S.R.L., IT

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

tracepath -6

 1?: [LOCALHOST]                        0.028ms pmtu 1500
 1:  karsolink-01.net.karsolink.com                        0.842ms 
 2:  2a12:d8c0:109f:121::a1                                1.579ms 
 3:  no reply
 4:  itgate.minap.it                                      10.611ms asymm  5 
 5:  if-0-2-0-1.Muttley-Monster.TRN.ipv6.itgate.net       12.664ms 
 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 SLO host (6connect) openRFC 4890 ✓

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

4/4

Echo small (56B) 24.0ms

4/4

Echo 1500B (DF) 24.0ms

yes

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	0.2ms	0%*	AS8038	6CONNECT - 6connect, Inc., US
2	*	-	0%*	-
3	*	-	60%	-
4	2a00:ee0:1:15::2	1.1ms	0%	AS5603	SIOL-NET - Telekom Slovenije, d.d., SI
5	de-cix.FRA.ipv6.itgate.net 2001:7f8::31eb:0:1	15.2ms	0%	-	NA
6	if-0-2-0-1.Muttley-Monster.TRN.ipv6.itgate.net 2001:1418:1::10e2	18.5ms	0%	AS12779	ITGATE - IT.Gate S.p.A., IT
7	2a03:91c0::ffff	24.0ms	0%	AS57394	EPIC-NETWORKS-AS - EPIC NETWORKS S.R.L., IT

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

tracepath -6

 1?: [LOCALHOST]                        0.016ms pmtu 9000
 1:  fw1-lju.6connect.com                                  2.693ms 
 1:  fw1-lju.6connect.com                                  0.491ms 
 2:  ccr-to-fw-ccr1-gw-lju.6connect.com                    0.921ms 
 3:  2a00:ee1:800:9::1                                     2.111ms 
 4:  2a00:ee0:1:15::2                                      1.284ms asymm  3 
 5:  2a00:ee0:1:10::2                                     23.480ms pmtu 1500
 5:  de-cix.FRA.ipv6.itgate.net                           15.065ms asymm  9 
 6:  if-0-2-0-1.Muttley-Monster.TRN.ipv6.itgate.net       18.707ms asymm  9 
 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

From SLO host (T-2) openRFC 4890 ✓

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

4/4

Echo small (56B) 36.0ms

4/4

Echo 1500B (DF) 36.2ms

yes

Type 1 dest-unreach

TCP responds on

Path (traceroute + mtr + PTR)

#	IP / PTR	RTT	mtr loss	AS	AS holder
1	*	-	-	-
2	2a01:260:1::225	2.3ms	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	2.7ms	0%*	AS34779	T-2-AS - T-2, d.o.o., SI
4	2a01-260-1-1--39.core6.t-2.net 2a01:260:1:1::39	2.6ms	0%	AS34779	T-2-AS - T-2, d.o.o., SI
5	*	-	-	-
6	ams-ix.ipv6.itgate.net 2001:7f8:1::a501:2779:1	33.2ms	0%	-	NA
7	ams-ix.ipv6.itgate.net 2001:7f8:1::a501:2779:1	32.1ms	30%	-	NA
8	2a03:91c0::ffff	40.3ms	0%	AS57394	EPIC-NETWORKS-AS - EPIC NETWORKS S.R.L., IT

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

tracepath -6

 1?: [LOCALHOST]                        0.027ms pmtu 1500
 1:  2a01:261:313:b814::1                                  0.821ms 
 2:  2a01:260:1::225                                       2.708ms 
 3:  2a01-260-1-1--9c.core6.t-2.net                        2.286ms 
 4:  2a01-260-1-1--39.core6.t-2.net                        3.346ms asymm  3 
 5:  no reply
 6:  ams-ix.ipv6.itgate.net                               32.978ms 
 7:  if-0-2-0-1.Muttley-Monster.TRN.ipv6.itgate.net       35.222ms asymm  8 
 8:  if-0-2-0-1.Muttley-Monster.TRN.ipv6.itgate.net       42.400ms 
 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