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AS12519

FASTNETUK

FastNet International Ltd

Registry

Authoritative registration data

AS number
12519
Name
FASTNETUK
Organisation
FastNet International Ltd
Country
RIR
RIPE
Registered
Source:asn:rdap retrieved

IPv4 prefixes

4

IPv6 prefixes

1

Total announced

5

Announced prefixes

Observed in BGP by route collectors, not a registry allocation list

Prefixes announced by AS12519
212.42.160.0/19 IPv4 /19 not checked
82.148.32.0/19 IPv4 /19 not checked
87.252.32.0/19 IPv4 /19 not checked
81.31.64.0/20 IPv4 /20 not checked
2a02:13a0::/32 IPv6 /32 not checked

No rows match “”.

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Source:ripestat:announced-prefixes observed

Internet Exchanges

Exchanges where this network has a listed peering LAN connection

Internet Exchange memberships listed for AS12519
Address families
LINX LON1: Main 1,000 Mbps IPv4 · IPv6
LINX LON2 1,000 Mbps IPv4 · IPv6
LONAP: LON0 2,000 Mbps IPv4 · IPv6

No rows match “”.

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Source:peeringdb retrieved

Exchange membership means the network has a listed connection; it does not prove peering with other members.

Observed adjacencies

Networks seen next to AS12519 in BGP paths by route collectors.

Source:ripestat:asn-neighbours observed

Observed upstreams

17 networks seen before AS12519 in AS paths

Observed upstreams
Families
AS2914 NTT-DATA-2914 573 1,999
v4 v6
AS1299 TWELVE99 169 660
v4
AS8218 NEO-ASN 22 190
v4 v6
AS33891 CORE-BACKBONE 28 106
v4 v6
AS6939 HURRICANE 25 102
v4
AS14840 ASN14840 8 94
v4 v6
AS34927 iFog-GmbH 8 57
v4 v6
AS39351 ESAB-AS 10 40
v4 v6
AS4455 8 37
v4 v6
AS137409 GSLNETWORKS-AS-AP 7 34
v4 v6
AS22356 12 29
v4 v6
AS215638 AS-CILIX-LIMITED 4 19
v4 v6
AS20562 OPEN-PEERING-AS 5 16
v4 v6
AS9009 M247 3 8
v4 v6
AS6204 3 7
v4
AS263444 3 7
v4
AS264409 3 7
v4 v6

No rows match “”.

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Observed downstreams

1 networks seen after AS12519 in AS paths

Observed downstreams
Families
AS201739 523 2,312
v4

No rows match “”.

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Uncertain adjacencies

18 adjacencies that may be an artefact of collector peering

Uncertain adjacencies
Families
AS24482 SGGS-AS-AP 4 209
v4 v6
AS48185 team_blue 3 57
v4 v6
AS25160 VORBOSS 4 38
v4 v6
AS212483 level86 4 38
v4 v6
AS49544 i3Dnet 3 38
v4 v6
AS917 MISAKA 4 19
v4 v6
AS3170 4 19
v4 v6
AS6894 4 19
v4 v6
AS31742 SOTACONNECT 4 19
v4 v6
AS35266 EXN-AS 4 19
v4 v6
AS39122 4 19
v4 v6
AS48070 4 19
v4 v6
AS198150 SIACOM-AS 4 19
v4 v6
AS207841 INFERNO 4 19
v4 v6
AS28792 4 18
v4
AS36236 NETACTUATE 3 8
v4 v6
AS31122 DIGIWEB-AS 1 1
v6
AS50300 1 1
v6

No rows match “”.

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Note:
These are observed adjacencies derived from BGP path data, not confirmed commercial relationships. A network appearing before another in an AS path does not establish that it is a paying transit customer, a settlement free peer, or anything else contractual. Adjacencies marked uncertain were seen only as direct peers of a route collector, so the collector's own peering may have created them.