Data as of Nov 5, 2026
72.29.130.136/29
No anonymizer space · no proxy exits in 30 daysBritish Telecommunications Limited · space held by INFONET Services Corporation
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 |
|---|---|---|---|---|---|---|
| 72.29.128.0/20 | 4,096 | BT-IP-ICG-GIIB-BLK2 | INFONET Services Corporation (INFO) · US | Direct Allocation | Feb 1, 2005 | matthias. |
| └ 72.29.130.136/29 | 8 | BERMADD-200 | unknown | — | — | — |
Network & registry
Announced by
Covering announcement 72.29.128.0/20
- Prefix
- 72.29.128.0/20
- Announced by
- AS3300 British Telecommunications Limited
- Type
- Residential
- RPKI
- RPKI valid
- Netname
- BT-IP-ICG-GIIB-BLK2
- 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 72.29.128.0/20
72.29.128.0/20
Routing history
- Pattern
- Stable
- First seen
- May 2005
- Current origin since
- May 2005 · 21 yr
- Origin networks
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 72.29.128.0/20 | AS3300 | /24 | ARIN | RPKI valid |
Whois
Registration for this announcement
- Range
- 72.
29. 128. 0/ 20 - Netname
- BT-IP-ICG-GIIB-BLK2
- 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-72-29-128-0-1
- Parent
- NET-72-0-0-0-0
- Created
- Feb 1, 2005
- RIR
- ARIN
- Country
- US
- Delegated
- Feb 1, 2005
- 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