AS overview
Test target: 2a13:f400::1 · static prefix probe · address space: PA · prefixes announced: 1
prefix(es): 2a13:f400::/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 | ||
2a13:f400::1 | prb | ✓ | ✓ | ? | ? | ✓ | ✓ | ✓ | ? | ? | ✓ | ✓ | ✓ | ? | ? | ✓ |
SIX peering
Not an SIX member, but our traceroute path crosses the SIX LAN from SLO host (6connect) - reached via an SIX-resident transit operator.
RPKI & ASPA
1 of 1 prefix(es) covered by a valid ROA.
| Prefix | RPKI state | Reason | Covering VRP(s) |
|---|---|---|---|
2a13:f400::/29 | ✓ valid | matched VRP (correct origin, length within maxLength) | AS210197 /29 maxLen 29 (ripe) |
Random-IP probe (yarrp) into the AS' prefixes
We probed 15 arbitrary IPv6 address(es) inside AS210197's announced prefix(es). No router inside the prefix responded. The deepest visible hop was 2001:15c0:1000:300::4 at hop 18 - that router answers ICMPv6 Echo. This is not in AS210197's announced prefix; operationally it's the AS-edge / peering interface (often on a SIX 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 2026-05-30T10:36:16Z
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 | 2.0ms | 0%* | AS203993 | STEFFANN-DC-AS - S.J.M. Steffann, NL |
| 3 | 2a00:1ca8:1::194 | 2.6ms | 0% | AS50673 | Serverius-as - Serverius Holding B.V., NL |
| 4 | 2a03:3f40::10:41 | 2.3ms | 0% | AS50673 | Serverius-as - Serverius Holding B.V., NL |
| 5 | * | - | 0% | - | |
| 6 | * | - | 0% | - | |
| 7 | * | - | 0% | - | |
| 8 | 2001:850:501:bc::2 | 23.3ms | 0% | AS8447 | A1TELEKOM-AT - A1 Telekom Austria AG, AT |
| 9 | 2001:15c0:1000:300::3 | 23.6ms | 0% | AS21283 | A1SI-AS - A1 Slovenija telekomunikacijske storitve,d.d., SI |
| 10 | 2a13:f400::1 | 23.9ms | 0% | AS210197 | RESITVE-AS - ROK TAJZEL, SI |
tracepath -6
1?: [LOCALHOST] 0.042ms pmtu 1500
1: 2a00:8642:42::3 1.860ms
1: 2a00:8642:42::3 1.265ms
2: gw.friends.steffann.nl 2.691ms
3: 2a00:1ca8:1::194 3.059ms
4: 2a03:3f40::10:41 3.409ms
5: no reply
6: no reply
7: no reply
8: 2001:850:501:bc::2 23.858ms asymm 10
9: 2001:15c0:1000:300::3 23.734ms asymm 11
10: no reply
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Too many hops: pmtu 1500
Resume: pmtu 1500 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 | * | - | - | - | |
| 2 | * | - | 0%* | - | |
| 3 | * | - | - | - | |
| 4 | * | - | - | - | |
| 5 | * | - | - | - | |
| 6 | * | - | - | - | |
| 7 | * | - | - | - | |
| 8 | * | - | 0% | - | |
| 9 | * | - | 0% | - | |
| 10 | 2001:850:501:bc::2 | 24.6ms | 0% | AS8447 | A1TELEKOM-AT - A1 Telekom Austria AG, AT |
| 11 | 2001:15c0:1000:300::3 | 24.7ms | 0% | AS21283 | A1SI-AS - A1 Slovenija telekomunikacijske storitve,d.d., SI |
| 12 | 2a13:f400::1 | 25.0ms | 0% | AS210197 | RESITVE-AS - ROK TAJZEL, SI |
tracepath -6
1?: [LOCALHOST] 0.030ms pmtu 1500
1: karsolink-01.net.karsolink.com 0.678ms
1: karsolink-01.net.karsolink.com 0.819ms
2: 2a12:d8c0:109f:121::a1 0.855ms
3: 2a12:d8c0:101f:6::1 10.385ms
4: no reply
5: no reply
6: no reply
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9: no reply
10: 2001:850:501:bc::2 25.453ms asymm 9
11: 2001:15c0:1000:300::3 25.573ms asymm 10
12: no reply
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Too many hops: pmtu 1500
Resume: pmtu 1500 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 | 2a03:a100:0:201:1::1 | 0.8ms | - | AS56635 | XENYA - XENYA inzeniring, proizvodnja in trgovina, d.o.o. Ljubljana, SI |
| 4 | six.a1.si @SIX 2001:7f8:46::2:1283 | 1.7ms | 0% | AS21283 | A1 Slovenija |
| 5 | 2001:15c0:1000:300::3 | 3.8ms | 0% | AS21283 | A1SI-AS - A1 Slovenija telekomunikacijske storitve,d.d., SI |
| 6 | 2a13:f400::1 | 3.4ms | 0% | AS210197 | RESITVE-AS - ROK TAJZEL, SI |
tracepath -6
1?: [LOCALHOST] 0.024ms pmtu 1500
1: fw1-lju.6connect.com 0.483ms
1: fw1-lju.6connect.com 0.351ms
2: ccr-to-fw-ccr1-gw-lju.6connect.com 0.882ms
3: 2a03:a100:0:201:1::1 0.758ms
4: six.a1.si 1.320ms
5: 2001:15c0:1000:300::3 3.256ms asymm 6
6: no reply
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Too many hops: pmtu 1500
Resume: pmtu 1500