AS210715 - Nik RozmanRPKI ⚠ 1/2ASPA ✓

AS overview

Test target: 2a0f:9400:7718:100:443::80 · media.piskot.si · address space: unknown · prefixes announced: 2

prefix(es): 2a07:22c1:38::/48, 2a0f:9400:7718::/48

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

At least one router inside AS210715's announced prefix replied during the random-target probe. Hop(s): 2a07:22c1:38:ffff::2. These are candidate targets for direct testing.

ICMPv6 Type 2 (Packet Too Big) acceptance - active test

Type 2 active test inconclusive: no Echo Reply to 1300-byte probe.
method: ICMPv6 Echo + forged PTB, tested 2026-09-23T10:36:18Z

sudo tcpdump -i any -n -e 'icmp6 and ip6[40] = 2 and (src host 2607:fae0:a000::42 or src host 2a00:8642:42::75 or src host 2a01:261:313:b814:2a0:98ff:fe5b:13e4 or src host 2a06:d1c1:10b::cccc or src host 2a06:d1c1:10d::aaaa or src host 2a09:ab81::91 or src host 2a12:d8c0:105a:9001::a154)'

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)   echo only

filter likely at: destination AS210715 (PISKOT-AS) · min PMTU on path: 1420

Path (traceroute + mtr + PTR)

Rate-limited ICMPv6: hop 13 (loss between 5% and 95% across mtr cycles - the router replies but only sometimes).

tracepath -6

 1?: [LOCALHOST]                        0.021ms pmtu 1500
 1:  _gateway                                              2.401ms 
 1:  _gateway                                              0.542ms 
 2:  sox-pn.sox.rs                                         0.834ms 
 3:  2001:7f8:1e:8::3d                                     0.575ms asymm  2 
 4:  2001:67c:128c::699                                   18.100ms 
 5:  2001:67c:128c::39e                                   20.035ms asymm  3 
 6:  no reply
 7:  no reply
 8:  2a12:3200:f000::21c                                  31.532ms asymm  5 
 9:  2a12:3200:f000::1c7                                  31.277ms asymm  5 
10:  2a0c:9a40:2784::2                                    32.806ms asymm  7 
11:  2a0c:9a40:2784::2                                    32.928ms pmtu 1420
11:  t27461-cus.customer.route64.org                      52.630ms asymm 10 
12:  jesenice.wg1.lju.gw.v6.piskot.si                     63.077ms asymm 11 
13:  jesenice.wg1.lju.gw.v6.piskot.si                    714.284ms !H
     Resume: pmtu 1420 

From DE host (Berlin)   echo only

filter likely at: destination AS210715 (PISKOT-AS) · min PMTU on path: 1420

Path (traceroute + mtr + PTR)

Rate-limited ICMPv6: hop 11 (loss between 5% and 95% across mtr cycles - the router replies but only sometimes).

tracepath -6

 1?: [LOCALHOST]                        0.028ms pmtu 1500
 1:  xe-0-0-13-178.gw01.ber01.as59645.net                  0.642ms 
 1:  xe-0-0-13-178.gw01.ber01.as59645.net                  0.649ms 
 2:  ae0-2453.cr10.ber01.lwlcom.net                        1.074ms 
 3:  ae0-150.cr10.fra01.lwlcom.net                        10.549ms asymm  7 
 4:  ae0-100.cr10.fra02.lwlcom.net                        11.008ms asymm  8 
 5:  ae0-10.cr10.fra06.lwlcom.net                         10.577ms asymm  7 
 6:  no reply
 7:  2a0c:9a40:2421::2                                    11.205ms asymm  4 
 8:  2a0d:5440:1::f                                       11.659ms asymm  5 
 9:  2a0d:5440:1::f                                       11.700ms pmtu 1420
 9:  t27403-cus.customer.route64.org                      89.578ms asymm  7 
10:  jesenice.wg1.lju.gw.v6.piskot.si                     46.018ms asymm  8 
11:  no reply
11:  jesenice.wg1.lju.gw.v6.piskot.si                    3110.179ms !H
     Resume: pmtu 1420 

From DE host (Düsseldorf)   echo only

filter likely at: destination AS210715 (PISKOT-AS) · min PMTU on path: 1420

Path (traceroute + mtr + PTR)

Rate-limited ICMPv6: hop 8, hop 9, hop 15, hop 16 (loss between 5% and 95% across mtr cycles - the router replies but only sometimes).

tracepath -6

 1?: [LOCALHOST]                        0.014ms pmtu 1500
 1:  xe-0-0-12-142.gw01.dus01.as59645.net                  0.500ms 
 1:  xe-0-0-12-142.gw01.dus01.as59645.net                  0.402ms 
 2:  eth1-0-12-h5594.edge5-dus1.bb.wiit.network            1.257ms 
 3:  no reply
 4:  lag11.core3-dus1.bb.wiit.network                      0.634ms 
 5:  lag2.core2-dus3.bb.wiit.network                       0.488ms asymm  4 
 6:  lag0-vl1002.core1-ams-eq3.bb.wiit.network             3.689ms asymm  5 
 7:  no reply
 8:  be6.core3.par2.he.net                                19.712ms asymm  5 
 9:  be4.core2.mrs1.he.net                                25.179ms asymm  7 
10:  be1.core2.bcn1.he.net                                28.719ms asymm  8 
11:  2a0c:9a40:2b01::1                                    27.970ms asymm  7 
12:  2a0c:9a40:100f:50b::2                                30.238ms asymm 14 
13:  2a0c:9a40:2b00::18                                   30.452ms asymm 15 
14:  2a0c:9a40:2b00::18                                   29.866ms pmtu 1420
14:  no reply
15:  jesenice.wg1.lju.gw.v6.piskot.si                     52.342ms asymm  7 
16:  no reply
16:  jesenice.wg1.lju.gw.v6.piskot.si                    3106.919ms !H
     Resume: pmtu 1420 

From NL host (go6lab)   echo only

filter likely at: destination AS210715 (PISKOT-AS) · min PMTU on path: 1420

Path (traceroute + mtr + PTR)

Rate-limited ICMPv6: hop 7, hop 9 (loss between 5% and 95% across mtr cycles - the router replies but only sometimes).

tracepath -6

 1?: [LOCALHOST]                        0.030ms pmtu 1420
 1:  2a00:8642:42::2                                       3.781ms 
 1:  2a00:8642:42::2                                       1.898ms 
 2:  gw.friends.steffann.nl                                2.551ms 
 3:  2a00:1ca8:1::194                                      3.244ms 
 4:  2a03:3f40::10:41                                      4.836ms 
 5:  speed-ix.vm.je                                        8.661ms asymm  6 
 6:  2a0c:9a40:2784::2                                     7.339ms asymm  5 
 7:  t27461-cus.customer.route64.org                      72.200ms asymm  5 
 8:  jesenice.wg1.lju.gw.v6.piskot.si                     39.425ms asymm  6 
 9:  jesenice.wg1.lju.gw.v6.piskot.si                    1427.185ms !H
     Resume: pmtu 1420 

From ITA host (Karsolink)   echo only

filter likely at: destination AS210715 (PISKOT-AS) · min PMTU on path: 1420

Path (traceroute + mtr + PTR)

Rate-limited ICMPv6: hop 5, hop 11, hop 12 (loss between 5% and 95% across mtr cycles - the router replies but only sometimes).

tracepath -6

 1?: [LOCALHOST]                        0.033ms pmtu 1500
 1:  no reply
 2:  no reply
 3:  no reply
 4:  no reply
 5:  be3.core2.mrs1.he.net                                19.726ms 
 6:  be1.core2.bcn1.he.net                                24.214ms 
 7:  2a0c:9a40:2b01::1                                    21.850ms 
 8:  no reply
 9:  2a0c:9a40:2b00::18                                   32.508ms asymm  7 
10:  2a0c:9a40:2b00::18                                   37.389ms pmtu 1420
10:  no reply
11:  jesenice.wg1.lju.gw.v6.piskot.si                     57.787ms 
12:  jesenice.wg1.lju.gw.v6.piskot.si                    993.619ms !H
     Resume: pmtu 1420 

From SLO host (6connect)   echo only

filter likely at: destination AS210715 (PISKOT-AS) · min PMTU on path: 1420

Path (traceroute + mtr + PTR)

Rate-limited ICMPv6: hop 8, hop 14, hop 15 (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                                  0.570ms 
 1:  fw1-lju.6connect.com                                  0.582ms 
 2:  no reply
 3:  2a03:a100:0:201:1::1                                  1.085ms 
 4:  2a03:a100:0:201:1::1                                  0.936ms pmtu 1500
 4:  e0-1.core1.lju1.he.net                                1.974ms 
 5:  no reply
 6:  port-channel1.core1.zag2.he.net                       4.354ms 
 7:  no reply
 8:  be3.core2.mrs1.he.net                                20.448ms 
 9:  be1.core2.bcn1.he.net                                26.091ms 
10:  2a0c:9a40:2b01::1                                    24.427ms 
11:  2a0c:9a40:100f:50b::2                                31.445ms asymm  9 
12:  2a0c:9a40:2b00::18                                   31.726ms asymm 10 
13:  2a0c:9a40:2b00::18                                   31.891ms pmtu 1420
13:  no reply
14:  jesenice.wg1.lju.gw.v6.piskot.si                     58.305ms asymm 11 
15:  no reply
15:  jesenice.wg1.lju.gw.v6.piskot.si                    3132.713ms !H
     Resume: pmtu 1420 

From SLO host (T-2)   echo only

filter likely at: destination AS210715 (PISKOT-AS) · min PMTU on path: 1420

Path (traceroute + mtr + PTR)

Rate-limited ICMPv6: hop 8, hop 15 (loss between 5% and 95% across mtr cycles - the router replies but only sometimes).

tracepath -6

 1?: [LOCALHOST]                        0.024ms pmtu 1500
 1:  no reply
 2:  2a01:260:1::225                                       5.797ms 
 3:  2a01-260-1-1--9a.core6.t-2.net                        2.628ms 
 4:  2a01-260-1-1--38.core6.t-2.net                        2.993ms asymm  3 
 5:  no reply
 6:  port-channel1.core1.zag2.he.net                      10.005ms asymm  7 
 7:  no reply
 8:  be1.core2.bcn1.he.net                                30.841ms 
 9:  be1.core2.bcn1.he.net                                31.420ms asymm  8 
10:  2a0c:9a40:2b01::1                                    45.475ms asymm  6 
11:  2a0c:9a40:2b00::18                                   45.695ms asymm  8 
12:  2a0c:9a40:2b00::18                                   46.046ms asymm  8 
13:  2a0c:9a40:2b00::18                                   37.503ms pmtu 1420
13:  no reply
14:  ???                                                 1482.865ms !H
     Resume: pmtu 1420