AS196749 - BBANDA BBANDA S.R.LPARFC 4890 ✓RPKI ✓ 1/1ASPA -

AS overview

Test target: 2a06:3dc0::1 · static prefix probe · address space: PA · prefixes announced: 1

prefix(es): 2a06:3dc0::/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 35 arbitrary IPv6 address(es) inside AS196749's announced prefix(es). No router inside the prefix responded. The deepest visible hop was 2001:7f8:b:100:1d1:a519:6749:240 at hop 18 - that router does not answer ICMPv6 Echo. This is not in AS196749'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 2026-09-23T12:04:50Z

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]                        0.024ms pmtu 1500
 1:  _gateway                                              1.077ms 
 1:  _gateway                                              0.400ms 
 2:  sox-pn.sox.rs                                         0.416ms 
 3:  2001:7f8:1e:8::3d                                     0.608ms asymm  2 
 4:  2001:67c:128c::699                                   18.409ms 
 5:  2a06:3dc0::1                                         46.557ms reached
     Resume: pmtu 1500 hops 5 back 5 

From DE host (Berlin)   openRFC 4890 ✓

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

Path (traceroute + mtr + PTR)

Rate-limited ICMPv6: hop 15, hop 17 (loss between 5% and 95% across mtr cycles - the router replies but only sometimes).

tracepath -6

 1?: [LOCALHOST]                        0.016ms pmtu 1500
 1:  xe-0-0-13-178.gw01.ber01.as59645.net                  0.379ms 
 1:  xe-0-0-13-178.gw01.ber01.as59645.net                  0.382ms 
 2:  ae0-2453.cr10.ber01.lwlcom.net                        0.992ms 
 3:  ae0-10.cr10.ber03.lwlcom.net                          1.089ms 
 4:  ae0-15.cr11.dtm01.lwlcom.net                          8.731ms asymm  5 
 5:  ae0-10.cr10.dtm02.lwlcom.net                          8.986ms asymm  6 
 6:  ae0-50.cr10.dus02.lwlcom.net                          8.667ms asymm  3 
 7:  ae0-10.cr10.dus01.lwlcom.net                          8.578ms asymm  4 
 8:  ae0-90.cr11.dus01.lwlcom.net                          8.792ms asymm  5 
 9:  as3303.dusseldorf.megaport.com                       17.555ms asymm 13 
10:  i00ffm-005-loo179.bb.ip-plus.net                     17.628ms asymm 12 
11:  i62bsw-015-loo179.ip6.ip-plus.net                    17.601ms asymm 14 
12:  i73olt-005-loo179.bb.ip-plus.net                     17.600ms 
13:  i71lzf-015-loo179.bb.ip-plus.net                     18.138ms asymm 12 
14:  i63bel-005-loo179.bb.ip-plus.net                     20.058ms asymm 13 
15:  as3303-as12874-bel-001-ser0.ce.ip-plus.net           22.490ms asymm  9 
16:  2001:b00:1:1:1::1af                                  23.164ms asymm  8 
17:  2001:b00:1:1:3::145                                  23.677ms asymm  9 
18:  2a06:3dc0::1                                         21.359ms reached
     Resume: pmtu 1500 hops 18 back 11 

From DE host (Düsseldorf)   openRFC 4890 ✓

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

Path (traceroute + mtr + PTR)

tracepath -6

 1?: [LOCALHOST]                        0.016ms pmtu 1500
 1:  xe-0-0-12-142.gw01.dus01.as59645.net                  0.303ms 
 1:  xe-0-0-12-142.gw01.dus01.as59645.net                  0.299ms 
 2:  eth1-0-12-h5594.edge5-dus1.bb.wiit.network            1.230ms 
 3:  no reply
 4:  lag30.core3-dus1.bb.wiit.network                      0.479ms 
 5:  lag0-vl1011.core1-fra-ix.bb.wiit.network              4.588ms 
 6:  lag0-vl1001.core1-nbg-ncd.bb.wiit.network             7.351ms 
 7:  lag0-vl6.core2-nbg-ncd.bb.wiit.network                7.188ms 
 8:  lag0-vl1006.core2-muc2.bb.wiit.network                9.678ms 
 9:  lag0-vl1009.core1-muc-eq3.bb.wiit.network             9.837ms 
10:  lag0-vl1001.core1-pda-vsix.bb.wiit.network           20.578ms 
11:  lag0-vl1001.core1-mil-mix.bb.wiit.network            20.577ms asymm  9 
12:  2a06:3dc0::1                                         20.637ms reached
     Resume: pmtu 1500 hops 12 back 10 

From NL host (go6lab)   openRFC 4890 ✓

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

Path (traceroute + mtr + PTR)

Rate-limited ICMPv6: hop 3, 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:  2a00:8642:42::2                                       2.153ms 
 1:  2a00:8642:42::2                                       2.325ms 
 2:  no reply
 3:  2a00:1ca8:1::194                                      4.909ms 
 4:  2a03:3f40::10:33                                      6.243ms 
 5:  no reply
 6:  2001:b00:1:1:3::133                                  25.518ms 
 7:  2001:b00:1:1:3::147                                  24.423ms 
 8:  2a06:3dc0::1                                         25.715ms reached
     Resume: pmtu 1500 hops 8 back 9 

From ITA host (Karsolink)   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]                        0.031ms pmtu 1500
 1:  no reply
 2:  2a12:d8c0:109f:121::a1                                0.746ms 
 3:  2a12:d8c0:101f:6::1                                  10.209ms 
 4:  fastweb-v6.mix-it.net                                10.495ms 
 5:  2001:b00:1:1:3::12f                                   8.547ms 
 6:  2001:b00:1:1:3::145                                  10.033ms 
 7:  2a06:3dc0::1                                          9.792ms reached
     Resume: pmtu 1500 hops 7 back 4 

From SLO host (6connect)   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]                        0.019ms pmtu 9000
 1:  fw1-lju.6connect.com                                  0.567ms 
 1:  fw1-lju.6connect.com                                  0.701ms 
 2:  no reply
 3:  no reply
 4:  2a00:ee0:1:15::2                                      1.520ms asymm  3 
 5:  2a00:ee0:1:10::2                                      1.528ms pmtu 1500
 5:  2a11:4142:2002::                                      1.072ms asymm  6 
 6:  r2-vie1-at.as5405.net                                27.026ms asymm 16 
 7:  r5-fra1-de.as5405.net                                27.075ms asymm 15 
 8:  r7-fra1-de.as5405.net                                27.121ms asymm 14 
 9:  r3-fra1-de.as5405.net                                27.792ms asymm 14 
10:  r2-zrh1-ch.as5405.net                                27.366ms asymm 12 
11:  2620:107:4008:e85::2                                 27.113ms asymm 12 
12:  2a06:3dc0::1                                         27.360ms reached
     Resume: pmtu 1500 hops 12 back 11 

From SLO host (T-2)   openRFC 4890 ✓

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

Path (traceroute + mtr + PTR)

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

tracepath -6

 1?: [LOCALHOST]                        0.026ms pmtu 1500
 1:  no reply
 2:  2a01:260:1::225                                       3.008ms 
 3:  2a01-260-1-1--9c.core6.t-2.net                        3.875ms 
 4:  2001:7f8:46:0:1::3303                                 9.931ms 
 5:  i00mil-005-loo179.bb.ip-plus.net                     10.242ms 
 6:  2001:4d98:a000::119                                  26.613ms asymm 11 
 7:  2001:b00:1:1:1::1b3                                  15.262ms asymm  8 
 8:  2001:b00:1:1:3::145                                  16.262ms asymm  9 
 9:  2a06:3dc0::1                                         15.467ms reached
     Resume: pmtu 1500 hops 9 back 7