IPv4 prefix
51.64.0.0/16
- IP Prefix (CIDR)
- 51.64.0.0/16
- Subnet Mask
- 255.255.0.0
- Address Count
- 65,536
- Owner
- UK Home Office (The Secretary of State for the Home Department)
- Handle
- ORG-UHOT1-RIPE
- Country
-
United Kingdom of Great Britain and Northern Ireland (GB)
- Address
- 2 Marsham Street SW1P 4DF London UNITED KINGDOM
- Registry
- RIPENCC
- Registered Prefix
- 51.64.0.0/16 (51.64.0.0 - 51.64.255.255)
| Announced Prefix | Relationship | Origin ASN | Description | Country | First Address | Last Address |
|---|---|---|---|---|---|---|
| 51.64.9.0/24 | More specific | AS211077 | UK Home Office (The Secretary of State for the Home Department) |
United Kingdom of Great Britain and Northern Ireland (GB)
|
51.64.9.0 | 51.64.9.255 |
| 51.64.32.0/22 | More specific | AS2856 | British Telecommunications Limited |
United Kingdom of Great Britain and Northern Ireland (GB)
|
51.64.32.0 | 51.64.35.255 |
| 51.64.34.0/23 | More specific | AS15404 | COLT Technology Services Group Limited |
United Kingdom of Great Britain and Northern Ireland (GB)
|
51.64.34.0 | 51.64.35.255 |
| 51.64.254.0/24 | More specific | AS211077 | UK Home Office (The Secretary of State for the Home Department) |
United Kingdom of Great Britain and Northern Ireland (GB)
|
51.64.254.0 | 51.64.254.255 |
| 51.64.255.0/24 | More specific | AS211015 | UK Home Office (The Secretary of State for the Home Department) |
United Kingdom of Great Britain and Northern Ireland (GB)
|
51.64.255.0 | 51.64.255.255 |