AS201333 - NAQUADRIA-AS Naquadria S.R.LPARFC 4890 ✓RPKI ✓ 3/3ASPA -

AS overview

Test target: 2a02:4720:0:11::38 · a1.naquadria.net · address space: PA · prefixes announced: 3

prefix(es): 2a02:4720::/32, 2a02:4721::/32, 2a02:4720::/29

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

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

We probed 70 arbitrary IPv6 address(es) inside AS201333's announced prefix(es). No router inside the prefix responded. The deepest visible hop was 2001:4ba0:ffe9:9a::2 at hop 12 - that router answers ICMPv6 Echo. This is not in AS201333'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 2026-09-23T12:02:52Z

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

Path (traceroute + mtr + PTR)

tracepath -6

 1?: [LOCALHOST]                        0.017ms pmtu 1500
 1:  _gateway                                              0.445ms 
 1:  _gateway                                              0.408ms 
 2:  2001:7f8:1e::4                                        0.633ms 
 3:  2001:7f8:30:0:2:1:0:9002                             57.850ms 
 4:  RT.VSX.PDA.IT.retn.net                               20.991ms 
 5:  GW-Naquadria.retn.net                                29.042ms asymm  7 
 6:  ens1f4-911-r02.pia1.naquadria.net                    29.173ms 
 7:  lf01b5-vlan910.pia1.naquadria.net                    29.202ms 
 8:  a1.naquadria.net                                     30.896ms !A
     Resume: pmtu 1500 

From DE host (Berlin)   openRFC 4890 ✓

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

Path (traceroute + mtr + PTR)

tracepath -6

 1?: [LOCALHOST]                        0.026ms pmtu 1500
 1:  xe-0-0-13-178.gw01.ber01.as59645.net                  0.495ms 
 1:  xe-0-0-13-178.gw01.ber01.as59645.net                  0.605ms 
 2:  ae0-2453.cr10.ber01.lwlcom.net                        0.827ms 
 3:  retn.bcix.de                                         10.789ms asymm  5 
 4:  RT.VSX.PDA.IT.retn.net                               23.028ms asymm  5 
 5:  GW-Naquadria.retn.net                                23.402ms asymm 12 
 6:  ens1f4-911-r02.pia1.naquadria.net                    23.229ms asymm 11 
 7:  lf01b5-vlan910.pia1.naquadria.net                    23.597ms asymm 12 
 8:  a1.naquadria.net                                     23.559ms !A
     Resume: pmtu 1500 

From DE host (Düsseldorf)   openRFC 4890 ✓

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

Path (traceroute + mtr + PTR)

tracepath -6

 1?: [LOCALHOST]                        0.027ms pmtu 1500
 1:  xe-0-0-12-142.gw01.dus01.as59645.net                  0.438ms 
 1:  xe-0-0-12-142.gw01.dus01.as59645.net                  0.338ms 
 2:  eth1-0-12-h5594.edge5-dus1.bb.wiit.network            1.326ms 
 3:  no reply
 4:  lag30.core3-dus1.bb.wiit.network                      0.529ms 
 5:  lag0-vl1011.core1-fra-ix.bb.wiit.network              4.420ms 
 6:  lag0-vl1001.core1-nbg-ncd.bb.wiit.network             7.123ms 
 7:  lag0-vl6.core2-nbg-ncd.bb.wiit.network                7.068ms 
 8:  lag0-vl1006.core2-muc2.bb.wiit.network                9.783ms 
 9:  lag0-vl1009.core1-muc-eq3.bb.wiit.network             9.927ms 
10:  lag0-vl1001.core1-pda-vsix.bb.wiit.network           20.453ms 
11:  lag0-vl1001.core1-mil-mix.bb.wiit.network            20.462ms asymm  9 
12:  lag0-vl5.core3-mil-irid.bb.wiit.network              20.287ms asymm  8 
13:  naquadria2.minap.it                                  20.162ms asymm  9 
14:  ens1f4-920-r01.pia1.naquadria.net                    21.493ms asymm 10 
15:  lf01b5-vlan910.pia1.naquadria.net                    21.581ms asymm 11 
16:  a1.naquadria.net                                     21.964ms !A
     Resume: pmtu 1500 

From NL host (go6lab)   openRFC 4890 ✓

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

Path (traceroute + mtr + PTR)

tracepath -6

 1?: [LOCALHOST]                        0.061ms pmtu 1500
 1:  2a00:8642:42::2                                       1.792ms 
 1:  2a00:8642:42::2                                       2.774ms 
 2:  no reply
 3:  ccr2-ccr1.dc1.nogalliance.org                         5.303ms asymm  2 
 4:  ams-ix.retn.net                                       6.444ms asymm  7 
 5:  RT.VSX.PDA.IT.retn.net                               23.188ms asymm  6 
 6:  GW-Naquadria.retn.net                                23.953ms asymm  7 
 7:  ens1f4-911-r02.pia1.naquadria.net                    27.427ms asymm  8 
 8:  lf01b5-vlan910.pia1.naquadria.net                    26.784ms asymm  9 
 9:  a1.naquadria.net                                     27.360ms !A
     Resume: pmtu 1500 

From ITA host (Karsolink)   openRFC 4890 ✓

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

Path (traceroute + mtr + PTR)

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

tracepath -6

 1?: [LOCALHOST]                        0.029ms pmtu 1500
 1:  karsolink-01.net.karsolink.com                        0.552ms 
 1:  karsolink-01.net.karsolink.com                        0.676ms 
 2:  2a12:d8c0:109f:121::a1                                0.608ms 
 3:  2a12:d8c0:101f:103::1                                 8.774ms 
 4:  2001:7f8:b9::12:1                                     9.845ms 
 5:  lf01b5-vlan910.pia1.naquadria.net                     9.895ms 
 6:  a1.naquadria.net                                     10.241ms !A
     Resume: pmtu 1500 

From SLO host (6connect)   openRFC 4890 ✓

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

Path (traceroute + mtr + PTR)

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

tracepath -6

 1?: [LOCALHOST]                        0.025ms pmtu 9000
 1:  fw1-lju.6connect.com                                  0.601ms 
 1:  fw1-lju.6connect.com                                  0.814ms 
 2:  no reply
 3:  2a03:a100:0:201:1::1                                  0.874ms 
 4:  2a03:a100:0:201:1::1                                  1.257ms pmtu 1500
 4:  e0-1.core1.lju1.he.net                                1.833ms 
 5:  no reply
 6:  port-channel1.core1.zag2.he.net                       4.267ms 
 7:  no reply
 8:  naquadria.minap.it                                   14.382ms 
 9:  ens1f4-920-r01.pia1.naquadria.net                    11.801ms asymm  7 
10:  lf01b5-vlan910.pia1.naquadria.net                    11.434ms asymm  9 
11:  a1.naquadria.net                                     11.368ms !A
     Resume: pmtu 1500 

From SLO host (T-2)   openRFC 4890 ✓

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

Path (traceroute + mtr + PTR)

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

tracepath -6

 1?: [LOCALHOST]                        0.066ms pmtu 1500
 1:  2a01:261:313:b814::1                                  0.938ms 
 1:  no reply
 2:  2a01:260:1::225                                       3.489ms 
 3:  2a01-260-1-1--9c.core6.t-2.net                        2.773ms 
 4:  hurricane-electric.nikhef.nlsix.net                  34.581ms 
 5:  hurricane-electric.nikhef.nlsix.net                  39.975ms asymm  4 
 6:  be6.core3.par2.he.net                                45.859ms 
 7:  be6.core3.par2.he.net                                43.712ms asymm  6 
 8:  be1.core3.par3.he.net                                41.114ms asymm  7 
 9:  no reply
10:  ens1f4-920-r01.pia1.naquadria.net                    39.157ms asymm  8 
11:  lf01b5-vlan910.pia1.naquadria.net                    43.290ms asymm  9 
12:  a1.naquadria.net                                     43.342ms !A
     Resume: pmtu 1500