Data as of Nov 5, 2026
12.144.21.0/24
No anonymizer space · no proxy exits in 30 daysDuane Morris · space held by AT&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) | 5,205 282 always on | AT&T Enterprises, LLC | |
| 12.0.0.0/8 | AS7018 | Residential | 13,299 722 always on | AT&T Enterprises, LLC |
Network & registry
Announced by
Covering announcement 12.144.20.0/23
- Prefix
- 12.144.20.0/23
- Announced by
- AS27329 Duane Morris
- Type
- Business
- RPKI
- No RPKI
- Netname
- ATT
- Registrant
- AT&T Enterprises, LLC
- RIR
- ARIN
Origin network
AS27329
US
- Name
- Duane Morris
- Type
- Business
- Registered
- Feb 13, 2003
- Industry
- Service
- Spamhaus ASN-DROP
- not listed
Routing timeline
Covering aggregate above, the prefix's own history below
12.144.20.0/23
Routing history
- Pattern
- Stable
- First seen
- May 2005
- Current origin since
- Aug 2016 · 10 yr
- Origin networks
- 2
- Last change of origin
- Jan 2016
Recorded history
History
- Handoffs
- 1
IRR
Route objects on 12.144.20.0/23
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS23388 not the origin | RADB | PNAP-CHI dmh | MAINT-AS1828 | Nov 13, 2023 |
Whois
Registration for this announcement
- Range
- 12.
0. 0. 0/ 8 - Netname
- ATT
- Registrant
- AT&T Enterprises, LLC
- Organization
- AT&T Enterprises, LLC (AEL-360)
- Org address
- 208 S. Akard St., Dallas, TX, 75202
- Org country
- US
- Type
- Direct Allocation
- Handle
- NET-12-0-0-0-1
- Parent
- NET-12-0-0-0-0
- Created
- Aug 23, 1983
- 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