AS203180 - BLUWIFI-AS NEWMEDIAWEB S.R.LPARFC 4890 ✓RPKI ✓ 1/1ASPA -

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AS overview

Test target: 2a0d:540::2 · static prefix probe · address space: PA · prefixes announced: 1

prefix(es): 2a0d:540::/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
2a0d:540::2prb??refusedrefusedrefusedrefused

MIX-IT / NAMEX / MINAP / TOP-IX / VSIX / EQUINIX-MILAN / BGPX-ROME / NAMEX-BARI / PCIX / DECIX-PALERMO peering

MIX-IT / NAMEX / MINAP / TOP-IX / VSIX / EQUINIX-MILAN / BGPX-ROME / NAMEX-BARI / PCIX / DECIX-PALERMO member - Open peering, peering member, since 2018-08-01. IPv6 LAN: 2001:7f8:b:100:1d1:a520:3180:43. Locations: -.

RPKI & ASPA

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

PrefixRPKI stateReasonCovering VRP(s)
2a0d:540::/29✓ validmatched VRP (correct origin, length within maxLength)AS203180 /29 maxLen 29 (ripe)

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

We probed 15 arbitrary IPv6 address(es) inside AS203180's announced prefix(es). No router inside the prefix responded. The deepest visible hop was 2001:470:0:2ea::2 at hop 6 - that router answers ICMPv6 Echo. This is not in AS203180'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 2026-05-30T12:47:29Z

From NL host (go6lab)   openRFC 4890 ✓

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

4/4
Echo small (56B) 45.2ms
4/4
Echo 1500B (DF) 45.7ms
yes
Type 1 dest-unreach
-
TCP responds on

Path (traceroute + mtr + PTR)

#IP / PTRRTTmtr lossASAS holder
12a00:8642:42::31.3ms0%AS203993STEFFANN-DC-AS - S.J.M. Steffann, NL
2gw.friends.steffann.nl
2a00:8642:1000:f000::1
3.6ms0%*AS203993STEFFANN-DC-AS - S.J.M. Steffann, NL
3*---
4be1.core3.ams1.he.net
2001:470:e:5e::1
4.9ms0%AS6939HURRICANE - Hurricane Electric LLC, US
5be2.core4.fra1.he.net
2001:470:e:38::2
12.9ms0%AS6939HURRICANE - Hurricane Electric LLC, US
6*---
7*---
8*---
92a0d:540::243.4ms0%AS203180BLUWIFI-AS - NEWMEDIAWEB S.R.L., IT

tracepath -6

 1?: [LOCALHOST]                        0.033ms pmtu 1500
 1:  2a00:8642:42::3                                       2.336ms 
 1:  2a00:8642:42::3                                       1.950ms 
 2:  gw.friends.steffann.nl                                2.597ms 
 3:  no reply
 4:  be1.core3.ams1.he.net                                 6.919ms 
 5:  be2.core4.fra1.he.net                                11.665ms 
 6:  no reply
 7:  no reply
 8:  no reply
 9:  2a0d:540::2                                          46.725ms reached
     Resume: pmtu 1500 hops 9 back 9 

From ITA host (Karsolink)   openRFC 4890 ✓

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

4/4
Echo small (56B) 35.3ms
4/4
Echo 1500B (DF) 34.2ms
yes
Type 1 dest-unreach
443,80
TCP responds on

Path (traceroute + mtr + PTR)

#IP / PTRRTTmtr lossASAS holder
1*-0%*-
2*---
32a12:d8c0:101f:103::18.5ms90%AS204471KARSOLINK - 2S Computers SRL, IT
42a0d:540::237.7ms0%AS203180BLUWIFI-AS - NEWMEDIAWEB 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]                        0.028ms pmtu 1500
 1:  karsolink-01.net.karsolink.com                        1.169ms 
 1:  karsolink-01.net.karsolink.com                        0.636ms 
 2:  2a12:d8c0:109f:121::a1                                0.716ms 
 3:  2a12:d8c0:101f:103::1                                 8.800ms 
 4:  2a0d:540::2                                          36.457ms reached
     Resume: pmtu 1500 hops 4 back 4 

From SLO host (6connect)   openRFC 4890 ✓

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

4/4
Echo small (56B) 41.2ms
4/4
Echo 1500B (DF) 41.1ms
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
0.4ms0%*AS80386CONNECT - 6connect, Inc., US
2*---
32a03:a100:0:201:1::10.9ms-AS56635XENYA - XENYA inzeniring, proizvodnja in trgovina, d.o.o. Ljubljana, SI
4e0-1.core1.lju1.he.net
2001:470:1:5be::1
2.0ms20%AS6939HURRICANE - Hurricane Electric LLC, US
5*---
6port-channel1.core1.zag2.he.net
2001:470:0:2ea::2
4.1ms60%AS6939HURRICANE - Hurricane Electric LLC, US
7*---
82a0d:540::242.5ms0%AS203180BLUWIFI-AS - NEWMEDIAWEB S.R.L., IT

Rate-limited ICMPv6: hop 4, hop 6 (loss between 5% and 95% across mtr cycles - the router replies but only sometimes).

tracepath -6

 1?: [LOCALHOST]                        0.037ms pmtu 1500
 1:  fw1-lju.6connect.com                                  0.742ms 
 1:  fw1-lju.6connect.com                                  0.497ms 
 2:  no reply
 3:  2a03:a100:0:201:1::1                                  0.997ms 
 4:  e0-1.core1.lju1.he.net                                2.065ms 
 5:  no reply
 6:  port-channel1.core1.zag2.he.net                       4.820ms 
 7:  no reply
 8:  2a0d:540::2                                          41.989ms reached
     Resume: pmtu 1500 hops 8 back 8