Data as of Nov 10, 2026
63.250.136.0/22
No anonymizer space · no proxy exits in 30 daysBritish Telecommunications Limited · space held by INFONET Services Corporation
Announcements
More specific
Announcements inside
| Prefix | Origin | Type | Holder | RPKI |
|---|---|---|---|---|
| 63.250.136.0/23 since Mar 2026 | AS3300 | Residential | INFONET Services Corporation | |
| 63.250.138.0/24 since Mar 2026 | AS3300 | Residential | INFONET Services Corporation | |
| 63.250.139.0/24 since Mar 2026 | AS3300 | Residential | INFONET Services Corporation |
Composition
The types across the prefix's announced space, by addresses.
Announced space
Address share
Announced space
Types across the prefix
1,024 addresses
| Type | Addresses | Share | Ranges | |
|---|---|---|---|---|
| Residential | 530 | 52% | 11 | |
| Business | 494 | 48% | 30 |
Network & registry
Announced by
Covering announcement 63.250.128.0/18
- Prefix
- 63.250.128.0/18
- Announced by
- AS3300 British Telecommunications Limited
- Type
- Residential
- Proxy exits
- 5
- Always-on exits
- 1
- RPKI
- RPKI valid
- Netname
- BT-IP-ICG-GIIB-BLK1
- Registrant
- INFONET Services Corporation
- RIR
- ARIN
Origin network
AS3300
GB
- Name
- British Telecommunications Limited
- Type
- Internet provider
- Registered
- Oct 28, 1994
- Domain
- bt.net
- Website
- www.bt.net
- Industry
- Internet Service Provider (ISP)
- Spamhaus ASN-DROP
- not listed
Routing timeline
Who has announced 63.250.128.0/18
63.250.128.0/18
Routing history
- Pattern
- Stable
- First seen
- May 2005
- Current origin since
- May 2005 · 22 yr
- Origin networks
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 63.250.128.0/18 | AS3300 | /18 | ARIN | RPKI valid |
Whois
Registration for this announcement
- Range
- 63.
250. 128. 0/ 18 - Netname
- BT-IP-ICG-GIIB-BLK1
- Registrant
- INFONET Services Corporation
- Organization
- INFONET Services Corporation (INFO)
- Org address
- 2160 East Grand Avenue, El Segundo, CA, 90245-1022
- Org country
- US
- Type
- Direct Allocation
- Handle
- NET-63-250-128-0-1
- Parent
- NET-63-0-0-0-0
- Created
- Nov 19, 1999
- RIR
- ARIN
- Country
- US
- Delegated
- Nov 19, 1999
- Status
- assigned
Report abuse
Abuse contact
- matthias.
blum@ bt. com - Name
- American Registry for IP Numbers -Point of Contact
- Phone
- +1-310-335-2600
- Handle
- AR2-ORG-ARIN