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Data as of Nov 3, 2026

51.241.3.0/24

Anonymizer · ISP proxy

British Telecommunications Limited · space held by Sky UK Limited

Announcement
this exact prefix
RPKI valid
Announced by
AS2856
Type
ISP proxy
Risk
90 / 100 · Critical
Recently moved
Recent change
New origin Jul 2026
from AS203048
IPv4 market

Path

Announced by AS2856 since Jul 2026 · 3 mo ago
1 · Holder
Sky UK Limited
record created Feb 5, 2026
2 · Leased from
IPXO
for its owner Sky UK Limited
3 · Announced by
AS2856 British Telecommunications Limited
since Jul 2026 · 3 mo ago
4 · Use
ISP proxy
anonymizer space, operator not named

Operators, sellers and brokers

Leased from

IP brokers

NameIn 51.241.3.0/24/24s
IPXO
256100%
1
Leased from

Owners leasing their own space

NameIn 51.241.3.0/24/24s
Sky UK Limited
256100%
1

Lineage

How this block came to its use, oldest first. The whole IPv4 market →

51.241.3.0/24

From the registry to its use

  1. Feb 5, 2026
    Registry record
    Sky UK Limited
    ALLOCATED PA
    51.241.0.0/16
  2. Feb 5, 2026
    Reallocated
    Sky UK Limited
    SUB-ALLOCATED PA
    51.241.0.0/17
  3. May 7, 2026– May 18, 2026
    Announced
    AS203048
  4. Jul 26, 2026
    Route object
    IPXO
    RIPE route object for AS2856 British Telecommunications Limited, maintainer NETUTILS-MNT
  5. Jul 26, 2026
    Route object
    IPXO
    RADB route object for AS2856 British Telecommunications Limited, maintainer MAINT-AS834
  6. Jul 30, 2026– Nov 2, 2026
    Announced
    AS2856 British Telecommunications Limited
    Internet provider
  7. today
    Leased from
    IPXO
    IP broker

Registrations in this block

The registry's network records over the announcement: those covering it, widest first, then every record inside it, under its parent.

RangeAddressesNetnameHolderTypeCreatedAbuse contact
51.241.0.0/1665,536UK-SKY-19930901Sky UK Limited (ORG-SUL39-RIPE) · GBALLOCATED PAFeb 5, 2026[email protected]
└ 51.241.0.0/1732,768SKY-LEASED-IPXOSky UK Limited (ORG-SUL39-RIPE) · GBSUB-ALLOCATED PAFeb 5, 2026[email protected]
└ 51.241.3.0/24256NET-51-241-3-0-24unknownASSIGNED PAJul 29, 2026[email protected]
via SKY-LEASED-IPXO

A contact marked “via” is the registry's: the record names none of its own, so the registry hands down its parent's.

Network & registry

AnnouncementRouting historyRPKI & IRRWhois & abuse
IPv4 market

Holder

Holder in the market →
Organization
Sky UK Limited
Handle
ORG-SUL39-RIPE
Range
51.241.0.0/16
Registration type
ALLOCATED PA
Record created
Feb 5, 2026
Origin network

AS2856

GB
Name
British Telecommunications Limited
Type
Internet provider
Registered
Dec 22, 1993
Domain
bt.net
Website
www.bt.net
Industry
Internet Service Provider (ISP)
Spamhaus ASN-DROP
not listed
VPN servers
12