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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

AS219369 · 

curl -s "https://thenetworkery.com/api/v1/network-report?query=AS219369"
JSON Docs

Warning: AS219369 (C2T) announces 3 IPv4 and 3 IPv6 prefixes. 2 warnings

AS pageAS219369
HolderC2T ConstructInTech Limited
AllocationRIPE NCC, United Kingdom (GB), allocated 2026-06-23
Prefixes (IPv4 / IPv6)3 / 3
RPKI valid100% (6 / 6)
Upstreams and peers2

What to fix

  1. Warning

    No IRR as-set is listed.

    Peers and route servers build prefix filters from the as-set. Without one they fall back to the AS number alone, which breaks as soon as you have customers.

    Fix: Create an as-set in your RIR’s IRR database and add it to your PeeringDB record.

    Open in PeeringDB lookup

  2. Warning

    No public NOC, policy or technical contact.

    Other networks use these addresses to set up peering and to reach you during an incident.

    Fix: Add a role contact (for example noc@ or peering@ an address you monitor) with visibility Public.

    Open in PeeringDB lookup

Checks

Routing and RPKI AS219369 announces 3 IPv4 and 3 IPv6 prefixes.
  • Pass: AS219369 announces 3 IPv4 and 3 IPv6 prefixes.
  • Pass: All 6 announced prefixes are RPKI valid.
  • Pass: Every announced prefix has an IRR route object.
  • Info: 2 upstreams and peers, 0 downstream networks seen.
HolderC2T ConstructInTech Limited
IPv4 prefixes3
IPv6 prefixes3
RPKI6 valid
Downstream networks0

Upstreams and peers seen to the left 2

AS209505 Unchained ISP AS209505 AS52025 ParadoxNetworks Limited

Announced prefixes 6

87.199.140.0/23 87.199.140.0/24 87.199.141.0/24 2a0b:9405:8000::/33 2a0b:9405::/32 2a0b:9405::/33

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

Open in ASN & BGP prefix lookup
Registration Found at rdap.db.ripe.net.
  • Pass: Found at rdap.db.ripe.net.
NameC2T
HandleAS219369
RangeAS219369
Statusactive
Registered2026-06-23T10:59:03Z
Last changed2026-10-24T19:41:46Z
Abuse contactabuse@c2t.uk
Allocation
Registry (RIR)RIPE NCC
CountryUnited Kingdom (GB)
Delegated on2026-06-23
StatusAllocated
Delegated rangeAS219369

Source: RIR delegation data, updated daily. The country is where the range was registered, not necessarily where it is used.

Contacts
RoleNameEmail
registrant ConstructInTech Limited
registrant RIPE-NCC-END-MNT
registrant UNCHAINED-MNT
abuse Abuse contact role object abuse@c2t.uk

Source: https://rdap.db.ripe.net/autnum/219369. Registration data from rdap.db.ripe.net, shown under its terms of use (terms): not for marketing or bulk collection. Personal contacts in this registry are not shown.

Open in WHOIS / RDAP lookup
PeeringDB No IRR as-set is listed.
  • Pass: AS219369 is in PeeringDB as C2T.
  • Info: No internet exchange ports are listed.
  • Warning: No IRR as-set is listed.
  • Warning: No public NOC, policy or technical contact.
NetworkC2T
AS numberAS219369
Type, Not Disclosed
Websitehttps://c2t.uk
Prefixes (IPv4 / IPv6)10 / 10
TrafficNot Disclosed
Ratio requiredNo
Last updated2026-10-22

Source: PeeringDB. Results are cached for an hour.

Open in PeeringDB lookup