Data as of Nov 8, 2026
204.140.64.0/18
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 the announcement: those covering it, widest first, then every record inside it, under its parent.
| Range | Addresses | Netname | Holder | Type | Created | Abuse contact |
|---|---|---|---|---|---|---|
| 204.140.64.0/18 | 16,384 | BT-IP-ICG-GIIB-BLK12 | INFONET Services Corporation (INFO) · US | Direct Allocation | Jan 4, 1995 | matthias. |
| └ 204. | 1,536 | NALCO | unknown | — | — | — |
| └ 204.140.70.0/24 | 256 | MACTAC | unknown | — | — | — |
| └ 204.140.71.0/24 | 256 | TECHNICOLOR2 | unknown | — | — | — |
| └ 204.140.72.0/24 | 256 | TECHNICOLOR3 | unknown | — | — | — |
| └ 204.140.73.0/24 | 256 | HERBALIFE6 | unknown | — | — | — |
| └ 204.140.74.0/23 | 512 | INGERSOL-RAND6 | unknown | — | — | — |
| └ 204.140.77.0/24 | 256 | MICROSOFT15 | unknown | — | — | — |
| └ 204.140.78.0/24 | 256 | INTERNAL-LUX-AFFILIAT | unknown | — | — | — |
| └ 204.140.79.0/24 | 256 | GSI-2 | unknown | — | — | — |
| └ 204.140.80.0/22 | 1,024 | MICROSOFT16 | unknown | — | — | — |
| └ 204.140.84.0/23 | 512 | PHARMACIA2 | unknown | — | — | — |
| └ 204. | 2,304 | MARION-MERRELL-DOW10 | unknown | — | — | — |
| └ 204. | 1,280 | HANES | unknown | — | — | — |
| └ 204.140.100.0/23 | 512 | MALLINCKRODT5 | unknown | — | — | — |
| └ 204.140.102.0/24 | 256 | NALCO2 | unknown | — | — | — |
| └ 204.140.103.0/24 | 256 | SPENCER2 | unknown | — | — | — |
| └ 204.140.127.0/24 | 256 | GUIDANT | unknown | — | — | — |
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
Who has announced this prefix
Summary
Routing history
- Pattern
- Stable
- First seen
- Jun 2024
- Current origin since
- Jun 2024 · 2.4 yr
- Origin networks
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 204.140.64.0/18 | AS3300 | /24 | ARIN | RPKI valid |
IRR
Route objects on the exact prefix
IRR inside
Route objects inside
| Prefix | Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|---|
| 204.140.97.0/24 | AS3300 | REACH | REACH (Customer Route) | MAINT-REACH-NOC | Feb 10, 2017 |
Whois
Registration for this announcement
- Range
- 204.
140. 64. 0/ 18 - Netname
- BT-IP-ICG-GIIB-BLK12
- 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-204-140-64-0-1
- Parent
- NET-204-0-0-0-0
- Created
- Jan 4, 1995
- RIR
- ARIN
- Country
- US
- Delegated
- Jan 4, 1995
- 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