Sky UK IP Ranges
Sky UK's broadband network is registered with RIPE as AS5607, still under the AS name BSKYB-BROADBAND-AS from the company's British Sky Broadcasting days. It is remarkable for how little it announces: about fifty IPv4 prefixes covering millions of addresses.
- Provider
- Sky UK
- Primary ASN
- AS5607
- Category
- ISP
- Headquarters
- Isleworth, UK
- Announced IPv4 prefixes
- 51
- Registry
- RIPE
Known IP ranges
These prefixes are currently announced to the global routing table by AS5607 (BSKYB-BROADBAND-AS Sky UK Limited). Prefix sets change over time - use WHOIS Lookup for the authoritative record on any specific address.
90.192.0.0/11
94.0.0.0/12
176.248.0.0/13
151.224.0.0/13
2.120.0.0/13
2.216.0.0/13
5.64.0.0/13
176.24.0.0/14
51.182.0.0/15
46.64.0.0/15
2a02:c78::/29
2a01:f8c0::/29
2a02:c7c::/30 (IPv6)
What does a Sky UK IP mean in a privacy test?
A Sky address as your visible IP means the connection left over the Sky broadband line with nothing tunnelling it. Sky does not name its customer addresses in reverse DNS the way BT does, so a PTR query on one usually returns nothing at all - which is a fact about how Sky runs its zone, not a sign of anything wrong with the address.
Where to get Sky's address list
Sky publishes no range file, so the RIPE database is the source. The aut-num for AS5607 carries the AS name BSKYB-BROADBAND-AS and the organisation Sky UK Limited, registered at 1 Brick Lane in London. The AS5607 page carries the registry record beside the routing data.
What makes this network unusually easy to enumerate is how few announcements it makes. AS5607 puts about fifty IPv4 prefixes into the routing table, but they are very large ones: 90.192.0.0/11, 94.0.0.0/12, 176.248.0.0/13, 151.224.0.0/13, 2.120.0.0/13, 2.216.0.0/13 and 5.64.0.0/13 account for most of the customer base between them. National broadband networks usually announce hundreds or thousands of prefixes; Sky's whole IPv4 footprint fits on a screen. The inetnum objects underneath keep the same shape - 90.192.0.0/13 is registered as BSKYB-BROADBAND, status ASSIGNED PA.
Sky publishes no reverse DNS for customer addresses
This is worth knowing before you go looking for it. BT names every broadband address under btcentralplus.com, Orange names its customers under wanadoo.fr and Deutsche Telekom writes the address into the hostname in hex - but a PTR query on a Sky customer address comes back empty. 90.192.0.1, 2.120.0.1 and 176.248.1.1 all return NXDOMAIN. There is no hostname here to read a city or a line type out of, so on this network the ASN and the RIPE inetnum are all the published information there is.
That makes a Sky match blunt but reliable: the address is on Sky's broadband access network, it is a customer line rather than rented compute, and nothing further about it is published. The silence is worth not over-reading. A missing PTR record is the normal state on this network and says nothing about the subscriber behind the address - it is a choice Sky made about its own zone, not a signal about the connection.
Related tools
Frequently asked questions
What IP ranges does Sky UK use?
Sky announces its broadband network under AS5607, which RIPE registers to Sky UK Limited under the AS name BSKYB-BROADBAND-AS. It puts only about fifty IPv4 prefixes into the routing table, but very large ones - 90.192.0.0/11, 94.0.0.0/12, 176.248.0.0/13 and 151.224.0.0/13 among them. No allowlist is published.
Why does a Sky UK IP appear in my privacy test?
A Sky address as your visible IP means the connection left over the Sky broadband line with nothing tunnelling it. Sky does not name its customer addresses in reverse DNS the way BT does, so a PTR query on one usually returns nothing at all - which is a fact about how Sky runs its zone, not a sign of anything wrong with the address.
Why does a Sky IP address have no hostname?
Because Sky does not publish reverse DNS for customer addresses. A PTR query on 90.192.0.1, 2.120.0.1 or 176.248.1.1 returns NXDOMAIN, where BT, Orange and Deutsche Telekom all name their broadband customers. That is how Sky runs its zone, not a problem with the address.
Why does Sky announce so few IP ranges?
Because it aggregates heavily. Around fifty IPv4 announcements cover Sky's whole broadband base, because each is very large - 90.192.0.0/11 alone is over two million addresses. Most national ISPs deaggregate into hundreds or thousands of more specific routes instead.
What is BSKYB in the Sky registry record?
It is the company's former name. Sky UK was British Sky Broadcasting, and the RIPE objects kept the abbreviation: the aut-num is BSKYB-BROADBAND-AS and the inetnum covering 90.192.0.0/13 is BSKYB-BROADBAND, both registered to Sky UK Limited today.