AS214443 - BEBYTE BE BYTE SRLPARFC 4890 ✓RPKI ✓ 1/1ASPA ✓

AS overview

Test target: 2a01:e600:100::103 · git.bebyte.it · address space: PA · prefixes announced: 1

prefix(es): 2a01:e600::/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 AS214443's announced prefix(es). No router inside the prefix responded. The deepest visible hop was 2001:7f8:b:100:1d1:a521:4443:128 at hop 12 - that router does not answer ICMPv6 Echo. This is not in AS214443'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 2026-09-23T12:02:13Z

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]                        0.014ms pmtu 1500
 1:  _gateway                                              0.571ms 
 1:  _gateway                                              0.573ms 
 2:  2001:7f8:1e::4                                        0.651ms 
 3:  2001:7f8:30:0:2:1:0:9002                             12.930ms 
 4:  RT.MIX.MIL.IT.retn.net                               29.650ms 
 5:  GW-AS47217.retn.net                                  29.445ms asymm  6 
 6:  2a02:670:f000:a::39                                  25.014ms asymm  7 
 7:  services-01.it.pda.vsx.6.as214443.net                24.745ms asymm  8 
 8:  containers-01.bebyte.it                              24.985ms reached
     Resume: pmtu 1500 hops 8 back 9 

From DE host (Berlin)   openRFC 4890 ✓

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

Path (traceroute + mtr + PTR)

tracepath -6

 1?: [LOCALHOST]                        0.028ms pmtu 1500
 1:  xe-0-0-13-178.gw01.ber01.as59645.net                  0.554ms 
 1:  xe-0-0-13-178.gw01.ber01.as59645.net                  0.483ms 
 2:  ae0-2453.cr10.ber01.lwlcom.net                        1.078ms 
 3:  ae0-10.cr10.ber03.lwlcom.net                          1.011ms 
 4:  ae0-15.cr11.dtm01.lwlcom.net                          8.698ms asymm  5 
 5:  ae0-10.cr10.dtm02.lwlcom.net                          8.951ms asymm  6 
 6:  ae0-20.cr10.dus04.lwlcom.net                          8.947ms asymm  5 
 7:  ae0-10.cr10.dus01.lwlcom.net                          8.940ms asymm  4 
 8:  ae6-60.cr10.ams01.lwlcom.net                         11.714ms asymm  5 
 9:  2001:7f8:12a::18                                     15.126ms asymm  4 
10:  2a03:b020::227                                       28.489ms asymm  4 
11:  2a03:b020:1:1f::b                                    29.057ms asymm 12 
12:  services-01.it.pda.vsx.6.as214443.net                28.621ms asymm 13 
13:  containers-01.bebyte.it                              29.197ms reached
     Resume: pmtu 1500 hops 13 back 14 

From DE host (Düsseldorf)   openRFC 4890 ✓

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

Path (traceroute + mtr + PTR)

tracepath -6

 1?: [LOCALHOST]                        0.022ms pmtu 1500
 1:  xe-0-0-12-142.gw01.dus01.as59645.net                  0.307ms 
 1:  xe-0-0-12-142.gw01.dus01.as59645.net                  0.276ms 
 2:  eth1-0-12-h5594.edge5-dus1.bb.wiit.network            1.794ms 
 3:  no reply
 4:  lag30.core3-dus1.bb.wiit.network                      0.452ms 
 5:  lag0-vl1011.core1-fra-ix.bb.wiit.network              4.475ms 
 6:  lag0-vl1001.core1-nbg-ncd.bb.wiit.network             7.156ms 
 7:  lag0-vl6.core2-nbg-ncd.bb.wiit.network                6.920ms 
 8:  lag0-vl1006.core2-muc2.bb.wiit.network                9.534ms 
 9:  lag0-vl1009.core1-muc-eq3.bb.wiit.network             9.934ms 
10:  lag0-vl1001.core1-pda-vsix.bb.wiit.network           20.351ms 
11:  lag0-vl1001.core1-mil-mix.bb.wiit.network            20.234ms asymm  9 
12:  bebyte-AS214443.mix-it.net                           24.823ms asymm 11 
13:  services-01.it.pda.vsx.6.as214443.net                25.011ms asymm 12 
14:  containers-01.bebyte.it                              24.602ms reached
     Resume: pmtu 1500 hops 14 back 13 

From NL host (go6lab)   openRFC 4890 ✓

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

Path (traceroute + mtr + PTR)

tracepath -6

 1?: [LOCALHOST]                        0.060ms pmtu 1500
 1:  2a00:8642:42::2                                       2.263ms 
 1:  2a00:8642:42::2                                       2.922ms 
 2:  no reply
 3:  speed-ix.fibertelecom.it                              5.402ms 
 4:  2a03:b020::227                                       25.650ms 
 5:  2a03:b020:1:1f::b                                    26.003ms 
 6:  services-01.it.pda.vsx.6.as214443.net                26.207ms 
 7:  containers-01.bebyte.it                              23.822ms reached
     Resume: pmtu 1500 hops 7 back 7 

From ITA host (Karsolink)   openRFC 4890 ✓

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

Path (traceroute + mtr + PTR)

tracepath -6

 1?: [LOCALHOST]                        0.029ms pmtu 1500
 1:  karsolink-01.net.karsolink.com                        0.699ms 
 1:  no reply
 2:  2a12:d8c0:109f:121::a1                                0.801ms 
 3:  no reply
 4:  2001:7f8:b9::41:1                                     8.679ms 
 5:  services-01.it.pda.vsx.6.as214443.net                 8.244ms 
 6:  containers-01.bebyte.it                               8.998ms reached
     Resume: pmtu 1500 hops 6 back 6 

From SLO host (6connect)   openRFC 4890 ✓

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

Path (traceroute + mtr + PTR)

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]                        0.022ms pmtu 9000
 1:  fw1-lju.6connect.com                                  0.589ms 
 1:  fw1-lju.6connect.com                                  0.531ms 
 2:  ccr-to-fw-ccr1-gw-lju.6connect.com                    1.017ms 
 3:  2a03:a100:0:201:1::1                                  0.875ms 
 4:  2a03:a100:0:201:1::1                                  0.969ms pmtu 1500
 4:  e0-1.core1.lju1.he.net                                2.379ms 
 5:  no reply
 6:  port-channel1.core1.zag2.he.net                       4.270ms 
 7:  no reply
 8:  2001:7f8:5f:ffff::39                                 17.127ms 
 9:  services-01.it.pda.vsx.6.as214443.net                16.337ms 
10:  containers-01.bebyte.it                              16.533ms reached
     Resume: pmtu 1500 hops 10 back 10 

From SLO host (T-2)   openRFC 4890 ✓

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

Path (traceroute + mtr + PTR)

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

tracepath -6

 1?: [LOCALHOST]                        0.027ms pmtu 1500
 1:  no reply
 2:  2a01:260:1::225                                       3.501ms 
 3:  2a01-260-1-1--9c.core6.t-2.net                        3.141ms 
 4:  2a01-260-1-1--39.core6.t-2.net                        2.635ms asymm  3 
 5:  hurricane-electric.nikhef.nlsix.net                  34.029ms asymm  4 
 6:  be7.core2.fra2.he.net                                41.894ms asymm  5 
 7:  be10.core1.zrh2.he.net                               55.381ms asymm  8 
 8:  be10.core1.zrh2.he.net                               55.507ms 
 9:  be1.core1.mil2.he.net                                35.274ms asymm  7 
10:  bebyte-AS214443.mix-it.net                           39.460ms asymm  7 
11:  bebyte-AS214443.mix-it.net                           35.601ms asymm  7 
12:  ???                                                  36.253ms asymm  8 
13:  containers-01.bebyte.it                              36.866ms reached
     Resume: pmtu 1500 hops 13 back 9