AS overview
Test target: 2a06:3dc0::1 · static prefix probe · address space: PA · prefixes announced: 1
prefix(es): 2a06:3dc0::/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 / hostname | Source | NL host (go6lab) | ITA host (Karsolink) | SLO host (6connect) | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ping | 1500B | :80 | :443 | reached | ping | 1500B | :80 | :443 | reached | ping | 1500B | :80 | :443 | reached | ||
2a06:3dc0::1 | prb | ✓ | ✓ | ? | ? | ✓ | ✓ | ✓ | refused | refused | ✓ | ✓ | ✓ | refused | refused | ✓ |
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 2017-05-30. IPv6 LAN: 2001:7f8:b:100:1d1:a519:6749:240. Locations: -.
RPKI & ASPA
1 of 1 prefix(es) covered by a valid ROA.
| Prefix | RPKI state | Reason | Covering VRP(s) |
|---|---|---|---|
2a06:3dc0::/29 | ✓ valid | matched VRP (correct origin, length within maxLength) | AS196749 /29 maxLen 48 (ripe) |
Random-IP probe (yarrp) into the AS' prefixes
We probed 15 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 10 - 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 2026-05-30T12:45:42Z
From NL host (go6lab) openRFC 4890 ✓
filter likely at: (none) · min PMTU on path: 1500
Path (traceroute + mtr + PTR)
| # | IP / PTR | RTT | mtr loss | AS | AS holder |
|---|---|---|---|---|---|
| 1 | 2a00:8642:42::3 | 0.9ms | 0% | AS203993 | STEFFANN-DC-AS - S.J.M. Steffann, NL |
| 2 | gw.friends.steffann.nl 2a00:8642:1000:f000::1 | 2.5ms | 0%* | AS203993 | STEFFANN-DC-AS - S.J.M. Steffann, NL |
| 3 | 2a00:1ca8:1::194 | 3.5ms | 30% | AS50673 | Serverius-as - Serverius Holding B.V., NL |
| 4 | 2a03:3f40::10:33 | 4.7ms | 0% | AS50673 | Serverius-as - Serverius Holding B.V., NL |
| 5 | * | - | 30% | - | |
| 6 | 2001:b00:1:1:3::131 | 20.5ms | 0% | AS12874 | FASTWEB - Fastweb SpA, IT |
| 7 | 2001:b00:1:1:3::145 | 21.1ms | 10% | AS12874 | FASTWEB - Fastweb SpA, IT |
| 8 | 2a06:3dc0::1 | 20.9ms | 0% | AS196749 | BBANDA - BBANDA S.R.L., IT |
Rate-limited ICMPv6: hop 3, hop 5, hop 7 (loss between 5% and 95% across mtr cycles - the router replies but only sometimes).
tracepath -6
1?: [LOCALHOST] 0.031ms pmtu 1500
1: 2a00:8642:42::3 1.378ms
1: 2a00:8642:42::3 0.860ms
2: gw.friends.steffann.nl 2.586ms
3: 2a00:1ca8:1::194 3.194ms
4: 2a03:3f40::10:33 5.776ms
5: no reply
6: 2001:b00:1:1:3::133 21.259ms
7: 2001:b00:1:1:3::147 22.483ms
8: 2a06:3dc0::1 21.687ms reached
Resume: pmtu 1500 hops 8 back 8 From ITA host (Karsolink) openRFC 4890 ✓
filter likely at: (none) · min PMTU on path: 1500
Path (traceroute + mtr + PTR)
| # | IP / PTR | RTT | mtr loss | AS | AS holder |
|---|---|---|---|---|---|
| 1 | * | - | 0%* | - | |
| 2 | 2a12:d8c0:109f:121::a1 | 0.4ms | 0%* | AS204471 | KARSOLINK - 2S Computers SRL, IT |
| 3 | 2a12:d8c0:101f:6::1 | 9.9ms | 90% | AS204471 | KARSOLINK - 2S Computers SRL, IT |
| 4 | fastweb.minap.it 2001:7f8:c5::a501:2874:1 | 11.1ms | 40% | AS12874 | Fastweb S.p.A. |
| 5 | 2001:b00:1:1:1::1b1 | 9.7ms | 0% | AS12874 | FASTWEB - Fastweb SpA, IT |
| 6 | 2001:b00:1:1:3::147 | 10.2ms | 0% | AS12874 | FASTWEB - Fastweb SpA, IT |
| 7 | 2a06:3dc0::1 | 10.4ms | 0% | AS196749 | BBANDA - BBANDA S.R.L., IT |
Rate-limited ICMPv6: hop 3, hop 4 (loss between 5% and 95% across mtr cycles - the router replies but only sometimes).
tracepath -6
1?: [LOCALHOST] 0.032ms pmtu 1500
1: karsolink-01.net.karsolink.com 0.616ms
1: karsolink-01.net.karsolink.com 0.698ms
2: no reply
3: 2a12:d8c0:101f:6::1 10.449ms
4: fastweb.minap.it 11.707ms
5: 2001:b00:1:1:1::1af 10.170ms
6: 2001:b00:1:1:3::145 10.996ms
7: 2a06:3dc0::1 10.716ms reached
Resume: pmtu 1500 hops 7 back 7 From SLO host (6connect) openRFC 4890 ✓
filter likely at: (none) · min PMTU on path: 1500
Path (traceroute + mtr + PTR)
| # | IP / PTR | RTT | mtr loss | AS | AS holder |
|---|---|---|---|---|---|
| 1 | fw1-lju.6connect.com 2607:fae0:a000::2 | 0.3ms | 0%* | AS8038 | 6CONNECT - 6connect, Inc., US |
| 2 | * | - | - | - | |
| 3 | 2a00:ee1:800:9::1 | 1.7ms | 80% | AS5603 | SIOL-NET - Telekom Slovenije, d.d., SI |
| 4 | 2a00:ee0:1:10::2 | 1.0ms | 0% | AS5603 | SIOL-NET - Telekom Slovenije, d.d., SI |
| 5 | 2a11:4142:2002 | 1.0ms | 0% | - | |
| 6 | 2620:107:4008:e85::2 | 8.0ms | 0% | - | NA |
| 7 | * | - | 50% | - | |
| 8 | 2001:b00:1:1:3::12f | 10.4ms | 0% | AS12874 | FASTWEB - Fastweb SpA, IT |
| 9 | 2001:b00:1:1:3::147 | 11.1ms | 0% | AS12874 | FASTWEB - Fastweb SpA, IT |
| 10 | 2a06:3dc0::1 | 11.2ms | 0% | AS196749 | BBANDA - BBANDA S.R.L., IT |
Rate-limited ICMPv6: hop 3, hop 7 (loss between 5% and 95% across mtr cycles - the router replies but only sometimes).
tracepath -6
1?: [LOCALHOST] 0.028ms pmtu 1500
1: fw1-lju.6connect.com 0.552ms
1: fw1-lju.6connect.com 0.425ms
2: no reply
3: 2a00:ee1:800:9::1 2.147ms
4: 2a00:ee0:1:10::2 2.544ms asymm 3
5: 2a11:4142:2002:: 0.975ms asymm 6
6: 2620:107:4008:e85::2 8.125ms asymm 7
7: fastweb-v6.mix-it.net 56.999ms asymm 6
8: 2001:b00:1:1:3::12d 11.071ms asymm 9
9: 2001:b00:1:1:3::145 11.251ms asymm 10
10: 2a06:3dc0::1 11.251ms reached
Resume: pmtu 1500 hops 10 back 11