ASN Lookup – Networks, Upstreams and Prefixes

AS12519

ASN

RIPE NCC

RIR

IPv4 Prefixes

IPv6 Prefixes

AS Information

ASNAS12519

NameFASTNETUK

OrganisationFN-RIPE

Country –

RIRRIPE NCC

Allocated12.06.2002

Abuse contacthostmaster@fastnet.co.uk

Network Overview

IPv4 Prefixes4

IPv6 Prefixes1

Upstreams IPv410

BGP Peers IPv420

Upstreams (Transit Providers)

IPv4

AS1299 TWELVE99

AS137409 GSLNETWORKS-AS-AP

AS20562 OPEN-PEERING-AS

AS215638 AS-CILIX-LIMITED

AS22356 AS22356

AS263444 AS263444

AS2914 NTT-DATA-2914

AS34927 iFog-GmbH

AS39120 CONVERGENZE-AS

AS39351 ESAB-AS

IPv4 Prefixes (4 total)

82.148.32.0/19

87.252.32.0/19

212.42.160.0/19

81.31.64.0/20

IPv6 Prefixes (1 total)

2a02:13a0::/32

BGP Peers IPv4 (20 total)

AS201739

AS39530

AS198150

AS207841

AS212483

AS24482

AS25160

AS28792

AS31122

AS3170

AS31742

AS35266

AS36236

AS39122

AS48070

AS48185

AS49544

AS50300

AS6894

AS917

My IP ASN Lookup IP Lookup WHOIS DNS Lookup

What is an ASN?

An Autonomous System Number (ASN) is a unique number assigned to a network on the internet. Upstreams are the transit providers through which the AS reaches the internet. Peers are networks with which direct traffic exchange takes place. Prefixes are the IP address ranges that the AS announces to the internet. Data via RIPE NCC RDAP and RIPEstat API.