Data as of Nov 9, 2026
12.139.164.136/29
No anonymizer space · no proxy exits in 30 daysAT&T Enterprises, LLC
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Leased from | Proxy exits | Holder | RPKI |
|---|---|---|---|---|---|---|
| 12.128.0.0/9 | AS7018 | Residential | IP broker Rackdog (part) | 5,311 297 always on | AT&T Enterprises, LLC | |
| 12.0.0.0/8 | AS7018 | Residential | 13,384 731 always on | AT&T Enterprises, LLC |
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 |
|---|---|---|---|---|---|---|
| 12.0.0.0/8 | 16,777,216 | ATT | AT&T Enterprises, LLC (AEL-360) · US | Direct Allocation | Aug 23, 1983 | abuse@ |
| └ 12.139.0.0/16 | 65,536 | ATTWORLD26 | AT&T Services, Inc. (ATTW) · US | Reallocated | May 21, 2010 | — |
| └ 12.139.164.136/29 | 8 | IP-TEAM921-164-136 | unknown | — | — | — |
Network & registry
Announced by
Covering announcement 12.139.164.0/24
- Prefix
- 12.139.164.0/24
- Announced by
- AS2386 AT&T Enterprises, LLC
- Type
- Internet provider
- RPKI
- RPKI valid
- Netname
- ATTWORLD26
- Registrant
- AT&T Services, Inc.
- RIR
- ARIN
IPv4 market
Holder
- Organization
- AT&T Enterprises, LLC
- Handle
- AEL-360
- Range
- 12.
0. 0. 0/ 8 - Registration type
- Direct Allocation
- Record created
- Aug 23, 1983
- Legacy
- yes
- Reallocated to
- AT&T Services, Inc. (ATTW)
- Reallocated range
- 12.
139. 0. 0/ 16 - Reallocated
- May 21, 2010
Origin network
AS2386
US
- Name
- AT&T Enterprises, LLC
- Type
- Internet provider
- Registered
- Feb 3, 1993
- Domain
- att.com
- Website
- qsun.att.com
- Industry
- Internet Service Provider (ISP)
- Spamhaus ASN-DROP
- not listed
Routing timeline
Covering aggregate above, the prefix's own history below
12.139.164.0/24
Routing history
- Pattern
- Stable
- First seen
- Jul 2020
- Current origin since
- Jul 2020 · 6.3 yr
- Origin networks
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 12.139.164.0/24 | AS2386 | /24 | ARIN | RPKI valid |
IRR
Route objects on 12.139.164.0/24
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS2386 | ARIN | AT&T Enterprises, LLC | MNT-AEL-360 | Sep 21, 2026 |
Whois
Registration for this announcement
- Range
- 12.
139. 0. 0/ 16 - Netname
- ATTWORLD26
- Registrant
- AT&T Services, Inc.
- Organization
- AT&T Services, Inc. (ATTW)
- Org address
- 200 S. Laurel AVE., MIDDLETOWN, NJ, 07748
- Org country
- US
- Type
- Reallocated
- Handle
- NET-12-139-0-0-1
- Parent
- NET-12-0-0-0-1
- Created
- May 21, 2010
- RIR
- ARIN
- Country
- US
- Delegated
- Aug 23, 1983
- Status
- assigned
Report abuse
Abuse contact
- abuse@
att. net - Name
- abuse
- Phone
- +1-919-319-8167
- Handle
- ABUSE7-ARIN