Data as of Nov 10, 2026
31.121.2.136/29
No anonymizer space · no proxy exits in 30 daysBritish Telecommunications Limited · space held by EE Limited
Registrations in this block
The registry's network records over this block, widest first, each under its parent.
| Range | Addresses | Netname | Holder | Type | Created | Abuse contact |
|---|---|---|---|---|---|---|
| 31. | 1,441,792 | UK-TM-20101125 | EE Limited (ORG-TIUL1-RIPE) · GB | ALLOCATED PA | Nov 13, 2025 | abuse@ |
| └ 31.121.0.0/16 | 65,536 | BTnet-1 | BTnet Assignments | LIR-PARTITIONED PA | May 28, 2019 | abuse@ via UK-TM-20101125 |
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
Announced by
Covering announcement 31.121.0.0/16
- Prefix
- 31.121.0.0/16
- Announced by
- AS2856 British Telecommunications Limited
- Type
- Residential
- Proxy exits
- 127
- Always-on exits
- 5
- RPKI
- RPKI valid
- Netname
- BTnet-1
- Registrant
- BTnet Assignments
- RIR
- RIPE NCC
Registry
Holder
- Organization
- EE Limited
- Handle
- ORG-TIUL1-RIPE
- Range
- 31.
106. 0. 0 - 31. 127. 255. 255 - Registration type
- ALLOCATED PA
- Record created
- Nov 13, 2025
- Reallocated to
- BTnet Assignments
- Reallocated range
- 31.
121. 0. 0/ 16 - Reallocation type
- LIR-PARTITIONED PA
- Reallocated
- May 28, 2019
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
Routing timeline
Who has announced 31.121.0.0/16
31.121.0.0/16
Routing history
- Pattern
- Stable
- First seen
- Apr 2013
- Current origin since
- Mar 2019 · 7.7 yr
- Origin networks
- 2
- Last change of origin
- Mar 2019
Recorded history
History
- Handoffs
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 31.121.0.0/16 | AS2856 | /16 | RIPE | RPKI valid |
IRR
Route objects on 31.121.0.0/16
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS2856 | RIPE | BTNET-INFRA-MNT AS12576-MNT | May 22, 2019 |
Whois
Registration for this announcement
- Range
- 31.
121. 0. 0/ 16 - Netname
- BTnet-1
- Registrant
- BTnet Assignments
- Registrant country
- GB
- Organization
- BTnet Assignments
- Org country
- GB
- Type
- LIR-PARTITIONED PA
- Created
- May 28, 2019
- Updated
- May 28, 2019
- Maintainer
- AS12576-MNT
- RIR
- RIPE NCC
- Country
- GB
- Delegated
- Nov 25, 2010
- Status
- assigned
Report abuse
Abuse contact
- abuse@
ee. co. uk - Name
- EE ABUSE
- Handle
- EA8069-RIPE