Carrier registry · GB · reviewed September 2026 · ASN probe 2026-09-06
United Kingdom mobile carriers: ASNs and MCC/MNC codes
3 mobile operators with the autonomous systems that route their traffic, the MCC/MNC codes that identify them, and the prefixes each ASN announced at the last probe. Open an operator for the full ASN table with evidence links.
- 3
- carriers
- 17
- ASNs
- 815
- announced prefixes
- 234
- mobile country code
Operators in the United Kingdom
| Operator | Parent group | ASNs | MCC/MNC | Prefixes | Network |
|---|---|---|---|---|---|
| EE | BT Group | AS2856 AS12576 AS33898 AS357362 mobile | 234-30 234-33 234-34 234-31 234-32 | 541 | 5G |
| O2 | Virgin Media O2 (50:50 joint venture of Liberty Global and Telefónica SA); operating entity Telefonica UK Limited | AS29180 AS564601 mobile | 234-10 234-11 234-02 | 24 | 4G LTE / 5G |
| Vodafone | VodafoneThree Holdings Ltd (merger of Vodafone and Hutchison 3G UK); operating entity Vodafone Limited | AS25135 AS1273 AS5378 AS8546 AS25310 AS5388 AS5551 AS6749 AS13017 AS13144 AS2032371 mobile | 234-15 | 250 | 4G LTE / 5G |
Network cities in the United Kingdom
Where these operators can exchange traffic locally: the exchanges and colocation facilities recorded in each city.
Questions
- What is the mobile country code (MCC) for United Kingdom?
- The operators recorded here use MCC 234. Network codes: EE 234-30, 234-33, 234-34, 234-31, 234-32; O2 234-10, 234-11, 234-02; Vodafone 234-15.
- Which ASNs do mobile carriers in the United Kingdom use?
- EE: AS2856, AS12576, AS33898, AS35736; O2: AS29180, AS56460; Vodafone: AS25135, AS1273, AS5378, AS8546, AS25310, AS5388, AS5551, AS6749, AS13017, AS13144, AS203237. Each operator page shows which ASNs are confirmed by PeeringDB or RIPEstat.
- Which carrier in the United Kingdom announces the most IP prefixes?
- EE, with 541 prefixes announced across its listed ASNs at the RIPEstat probe on 2026-09-06. Prefix counts include IPv4 and IPv6 and change as routes are added or withdrawn.