Data as of Nov 7, 2026
72.29.132.0/22
No anonymizer space · no proxy exits in 30 daysBritish Telecommunications Limited · space held by INFONET Services Corporation
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Holder | RPKI |
|---|---|---|---|---|
| 72.29.128.0/20 since May 2005 | AS3300 | Residential | INFONET Services Corporation |
Registrations in this block
The registry's network records over the announcement: those covering it, widest first, then every record inside it, 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. |
| └ 72.29.132.128/29 | 8 | BIOGENIDEC | unknown | — | — | — |
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 | 1,016 | >99% | 2 | |
| Business | 8 | 0.78% | 1 |
Network & registry
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
Covering aggregate above, the prefix's own history below
Summary
Routing history
- Pattern
- Stable
- First seen
- Aug 2022
- Current origin since
- Aug 2022 · 4.2 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 |
IRR
Route objects on the exact prefix
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS3300 | ARIN | BT-IP-ICG/GIIB | MNT-INFO | Aug 1, 2025 |
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