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Network report

Who holds an IP address, prefix or AS number, how it is routed (origin AS, RPKI, IRR), its reverse DNS, blocklist listings and PeeringDB record, with what to fix first.

IP address, prefix or AS number

AS13205 · 

curl -s "https://thenetworkery.com/api/v1/network-report?query=AS13205"
JSON Docs

Warning: AS13205 (British Telecommunications Limited) announces 14 IPv4 and 0 IPv6 prefixes. 3 warnings

AS pageAS13205
HolderBritish Telecommunications Limited
AllocationRIPE NCC, United Kingdom (GB), allocated 2000-05-04
Prefixes (IPv4 / IPv6)14 / 0
RPKI valid0% (0 / 14)
Upstreams and peers2

What to fix

  1. Warning

    No IPv6 prefixes announced.

    Networks without IPv6 force their users through NAT64 or leave them unreachable from IPv6-only networks.

    Fix: Get an IPv6 allocation from your RIR (usually free with your IPv4 membership) and announce it.

    Open in ASN & BGP prefix lookup

  2. Warning

    10 of 14 announced prefixes have no ROA (RPKI not found): 31.11.56.0/23, 78.109.0.0/20, 78.109.0.0/24, 78.109.5.0/24, 78.109.6.0/24 (+5).

    Without a ROA, networks cannot tell your routes from a hijack.

    Fix: Create a ROA for each at your RIR portal, with origin AS13205 and a max length equal to the prefix length:

    31.11.56.0/23 AS13205 max-length /23
78.109.0.0/20 AS13205 max-length /20
78.109.0.0/24 AS13205 max-length /24
78.109.5.0/24 AS13205 max-length /24
78.109.6.0/24 AS13205 max-length /24
78.109.7.0/24 AS13205 max-length /24
78.109.9.0/24 AS13205 max-length /24
78.109.10.0/24 AS13205 max-length /24
78.109.11.0/24 AS13205 max-length /24
217.140.0.0/20 AS13205 max-length /20

    Open in RPKI / ROA validator Guide

  3. Warning

    PeeringDB did not answer: HTTP 404

    Fix: Try again in a minute.

    Open in PeeringDB lookup

Checks

Routing and RPKI No IPv6 prefixes announced.
  • Pass: AS13205 announces 14 IPv4 and 0 IPv6 prefixes.
  • Warning: No IPv6 prefixes announced.
  • Warning: 10 of 14 announced prefixes have no ROA (RPKI not found): 31.11.56.0/23, 78.109.0.0/20, 78.109.0.0/24, 78.109.5.0/24, 78.109.6.0/24 (+5).
  • Info: The RPKI state of 4 prefixes was not looked up (no ROA of AS13205 covers them; only the first 10 are checked).
  • Pass: Every announced prefix has an IRR route object.
  • Info: 2 upstreams and peers, 0 downstream networks seen.
HolderBritish Telecommunications Limited
IPv4 prefixes14
IPv6 prefixes0
RPKI10 not found · 4 not looked up
Downstream networks0
Routes to fix
PrefixRPKI
31.11.56.0/23 No ROA
78.109.0.0/20 No ROA
78.109.0.0/24 No ROA
78.109.5.0/24 No ROA
78.109.6.0/24 No ROA
78.109.7.0/24 No ROA
78.109.9.0/24 No ROA
78.109.10.0/24 No ROA
78.109.11.0/24 No ROA
217.140.0.0/20 No ROA

Upstreams and peers seen to the left 2

AS5400 BT AS2856 BTnet (BT's UK IP Network

Announced prefixes 14

31.11.56.0/23 78.109.0.0/20 78.109.0.0/24 78.109.5.0/24 78.109.6.0/24 78.109.7.0/24 78.109.9.0/24 78.109.10.0/24 78.109.11.0/24 217.140.0.0/20 217.140.12.0/22 217.140.12.0/24 217.140.13.0/24 217.140.32.0/19

Source: RIPEstat (RIPE NCC RIS, Routinator, IRR); AS names: Team Cymru

Open in ASN & BGP prefix lookup
Registration The registry is limiting how often it can be asked. Please try again in a minute.
Open in WHOIS / RDAP lookup
PeeringDB PeeringDB did not answer: HTTP 404
  • Warning: PeeringDB did not answer: HTTP 404

Source: PeeringDB. Results are cached for an hour.

Open in PeeringDB lookup