AS50201 - IMPULSO-AS Impulso SrlPARFC 4890 ✓RPKI ✓ 1/1ASPA -

← back to summary

All countriesHomeState of IPv6TopologyIXPsAboutipv6.si ↗ Sparky

AS overview

Test target: 2a0b:93c0::1 · static prefix probe · address space: PA · prefixes announced: 1

prefix(es): 2a0b:93c0::/29

Targets & per-vantage-point probe results (1 target(s) across 3 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 / hostnameSourceNL host (go6lab)ITA host (Karsolink)SLO host (6connect)
ping1500B:80:443reachedping1500B:80:443reachedping1500B:80:443reached
2a0b:93c0::1prb??refusedrefusedrefusedrefused

RPKI & ASPA

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

PrefixRPKI stateReasonCovering VRP(s)
2a0b:93c0::/29✓ validmatched VRP (correct origin, length within maxLength)AS50201 /29 maxLen 29 (ripe)

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

At least one router inside AS50201's announced prefix replied during the random-target probe. Hop(s): 2a0b:93c0::1. 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 2026-05-30T12:46:51Z

From NL host (go6lab)   openRFC 4890 ✓

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

4/4
Echo small (56B) 28.6ms
4/4
Echo 1500B (DF) 28.6ms
yes
Type 1 dest-unreach
-
TCP responds on

Path (traceroute + mtr + PTR)

#IP / PTRRTTmtr lossASAS holder
12a00:8642:42::31.4ms0%AS203993STEFFANN-DC-AS - S.J.M. Steffann, NL
2gw.friends.steffann.nl
2a00:8642:1000:f000::1
1.8ms0%*AS203993STEFFANN-DC-AS - S.J.M. Steffann, NL
32a00:1ca8:1::1943.2ms0%AS50673Serverius-as - Serverius Holding B.V., NL
42a03:3f40::10:412.2ms0%AS50673Serverius-as - Serverius Holding B.V., NL
52001:b28:3ff::1b1b:0:125.4ms10%AS31500GNM-AS - Global Network Management Inc, AG
6*---
7be47.core4.fra1.he.net
2001:470:e:f::2
28.6ms-AS6939HURRICANE - Hurricane Electric LLC, US
8be3.core2.fra2.he.net
2001:470:e:5a::1
31.5ms0%AS6939HURRICANE - Hurricane Electric LLC, US
92001:7f8:15e::2329.4ms0%-NA
102a0b:93c0::128.6ms0%AS50201IMPULSO-AS - Impulso Srl, IT

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

tracepath -6

 1?: [LOCALHOST]                        0.040ms pmtu 1500
 1:  2a00:8642:42::3                                       1.361ms 
 1:  2a00:8642:42::3                                       1.527ms 
 2:  gw.friends.steffann.nl                                2.581ms 
 3:  2a00:1ca8:1::194                                      3.010ms 
 4:  2a03:3f40::10:41                                      2.813ms 
 5:  2001:b28:3ff::1b1b:0:1                               27.615ms asymm  6 
 6:  no reply
 7:  be47.core4.fra1.he.net                               31.343ms asymm  5 
 8:  be3.core2.fra2.he.net                                28.176ms asymm  6 
 9:  2001:7f8:15e::23                                     29.280ms asymm 11 
10:  2a0b:93c0::1                                         29.587ms reached
     Resume: pmtu 1500 hops 10 back 11 

From ITA host (Karsolink)   openRFC 4890 ✓

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

4/4
Echo small (56B) 20.2ms
3/4
Echo 1500B (DF) 20.3ms
yes
Type 1 dest-unreach
443,80
TCP responds on

Path (traceroute + mtr + PTR)

#IP / PTRRTTmtr lossASAS holder
1*---
22a12:d8c0:109f:121::a10.4ms-AS204471KARSOLINK - 2S Computers SRL, IT
32a12:d8c0:101f:6::19.9ms60%AS204471KARSOLINK - 2S Computers SRL, IT
4*---
5*---
6*---
7*---
8be3.core2.fra2.he.net
2001:470:e:5a::1
20.4ms0%AS6939HURRICANE - Hurricane Electric LLC, US
92001:7f8:15e::2319.9ms0%-NA
102a0b:93c0::120.1ms0%AS50201IMPULSO-AS - Impulso Srl, IT

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

tracepath -6

 1?: [LOCALHOST]                        0.032ms pmtu 1500
 1:  karsolink-01.net.karsolink.com                        0.686ms 
 2:  2a12:d8c0:109f:121::a1                                0.802ms 
 3:  2a12:d8c0:101f:6::1                                  10.274ms 
 4:  no reply
 5:  no reply
 6:  no reply
 7:  be47.core4.fra1.he.net                               20.991ms 
 8:  be3.core2.fra2.he.net                                21.188ms 
 9:  2001:7f8:15e::23                                     20.330ms asymm 11 
10:  2a0b:93c0::1                                         20.603ms reached
     Resume: pmtu 1500 hops 10 back 11 

From SLO host (6connect)   openRFC 4890 ✓

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

4/4
Echo small (56B) 94.7ms
4/4
Echo 1500B (DF) 17.4ms
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
0.3ms0%*AS80386CONNECT - 6connect, Inc., US
2*---
32a03:a100:0:201:1::10.9ms0%AS56635XENYA - XENYA inzeniring, proizvodnja in trgovina, d.o.o. Ljubljana, SI
4e0-1.core1.lju1.he.net
2001:470:1:5be::1
2.1ms10%AS6939HURRICANE - Hurricane Electric LLC, US
5100ge0-0-0-5.core1.vie1.he.net
2001:470:0:578::1
7.0ms0%AS6939HURRICANE - Hurricane Electric LLC, US
6100ge0-0-0-19.core2.fra2.he.net
2001:470:0:7ef::1
19.1ms0%AS6939HURRICANE - Hurricane Electric LLC, US
72001:7f8:15e::2317.3ms0%-NA
82a0b:93c0::117.2ms0%AS50201IMPULSO-AS - Impulso Srl, IT

Rate-limited ICMPv6: hop 4 (loss between 5% and 95% across mtr cycles - the router replies but only sometimes).

tracepath -6

 1?: [LOCALHOST]                        0.029ms pmtu 1500
 1:  fw1-lju.6connect.com                                  0.654ms 
 1:  fw1-lju.6connect.com                                  0.527ms 
 2:  no reply
 3:  2a03:a100:0:201:1::1                                  1.397ms 
 4:  no reply
 5:  100ge0-0-0-5.core1.vie1.he.net                        9.298ms 
 6:  100ge0-0-0-19.core2.fra2.he.net                      18.701ms asymm  7 
 7:  2001:7f8:15e::23                                     17.547ms 
 8:  2a0b:93c0::1                                         17.364ms reached
     Resume: pmtu 1500 hops 8 back 10