Data as of Nov 10, 2026
203.
- Proxy activity
- Not seen in 30 days
- Type
- Business
- Risk
- 0 / 100 · Low
- Announced by
- AS2687AT&T Enterprises, LLCInternet provider
- Announcement
- 203.163.0.0/18No RPKI
- Company
- AT&T Japan K.K.
- Location
- Chiyoda, Tokyo, Japan
Network & registry
Announced by
Announcement
- Prefix
- 203.163.0.0/18
- Announced by
- AS2687 AT&T Enterprises, LLC
- Type
- Internet provider
- RPKI
- No RPKI
Origin network
AS2687
US
- Name
- AT&T Enterprises, LLC
- Type
- Internet provider
- Registered
- Jun 2, 1993
- Domain
- att.com
- Website
- www.att.com
- Industry
- Internet Service Provider (ISP)
- Spamhaus ASN-DROP
- not listed
Routing timeline
Who has announced 203.163.0.0/18
203.163.0.0/18
Routing history
- Pattern
- Stable
- First seen
- Aug 2020
- Current origin since
- Aug 2020 · 6.3 yr
- Origin networks
- 1
IRR
Route objects on 203.163.0.0/18
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS2687 | RADB | To allow routing to other ISPs | MAINT-AS7132 | Nov 13, 2023 |
Whois
Registration for this address
- Range
- 203.
163. 0. 0/ 18 - Netname
- ATT-MPN-AP
- Registrant
- AT&T Japan K.K.
- Registrant country
- JP
- Organization
- Not stated by the registry
- Type
- ALLOCATED PORTABLE
- Created
- Not stated by the registry
- Updated
- Jul 7, 2020
- Maintainer
- APNIC-HM
- Sub-assignment
- 203.
163. 61. 6/ 32 - RIR
- APNIC
- Country
- JP
- Delegated
- Jul 30, 1998
- Status
- assigned
Report abuse
Abuse contact
- peering@
intl. att. com - Name
- ABUSE ATTOPENNETAP
- Handle
- AA1420-AP