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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

AS12519 · 

curl -s "https://thenetworkery.com/api/v1/network-report?query=AS12519"
JSON Docs

Warning: AS12519 (FASTNETUK) announces 4 IPv4 and 1 IPv6 prefixes. 1 warning

AS pageAS12519
HolderFASTNETUK FastNet International Ltd
AllocationRIPE NCC, United Kingdom (GB), allocated 1999-06-29
Prefixes (IPv4 / IPv6)4 / 1
RPKI valid100% (5 / 5)
Upstreams and peers15
Peering policyOpen

What to fix

  1. 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 AS12519 announces 4 IPv4 and 1 IPv6 prefixes.
  • Pass: AS12519 announces 4 IPv4 and 1 IPv6 prefixes.
  • Pass: All 5 announced prefixes are RPKI valid.
  • Pass: Every announced prefix has an IRR route object.
  • Info: 15 upstreams and peers, 1 downstream networks seen.
HolderFASTNETUK FastNet International Ltd
IPv4 prefixes4
IPv6 prefixes1
RPKI5 valid
Downstream networks1

Upstreams and peers seen to the left 15

AS1299 Arelion (Twelve99) AS2914 NTT Global IP Network AS33891 Core-Backbone AS6939 Hurricane Electric AS8218 Zayo Europe AS22356 Durand do Brasil AS14840 BR.Digital AS39351 31173 Services AS4455 BSO AS20562 Open Peering AS9009 M247 Global AS12735 TurkNet Iletisim Hizmetleri A.S

Announced prefixes 5

81.31.64.0/20 82.148.32.0/19 87.252.32.0/19 212.42.160.0/19 2a02:13a0::/32

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.
NameFASTNETUK
HandleAS12519
RangeAS12519
Statusactive
Registered2002-06-12T14:03:11Z
Last changed2019-06-11T09:40:42Z
Abuse contacthostmaster@fastnet.co.uk
Allocation
Registry (RIR)RIPE NCC
CountryUnited Kingdom (GB)
Delegated on1999-06-29
StatusAllocated
Delegated rangeAS12519

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

Contacts
RoleNameEmail
registrant FN-RIPE
registrant FastNet International Ltd
registrant RIPE-NCC-END-MNT
abuse Abuse-C Role hostmaster@fastnet.co.uk

Source: https://rdap.db.ripe.net/autnum/12519. 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 public NOC, policy or technical contact.
  • Pass: AS12519 is in PeeringDB as Fastnet.
  • Info: Peering policy: Open.
  • Info: Present at 3 internet exchanges with 4 ports (40G in total).
  • Warning: No public NOC, policy or technical contact.
NetworkFastnet (Fastnet International)
AS numberAS12519
TypeNSP, Regional
Websitehttp://fastnet.co.uk
IRR as-setAS-FASTNET
Prefixes (IPv4 / IPv6)50 / 1
Traffic5-10Gbps, Mostly Inbound
Peering policyOpen
LocationsNot Required
Ratio requiredNo
ContractsNot Required
Last updated2026-11-03

Source: PeeringDB. Results are cached for an hour.

Open in PeeringDB lookup