Data as of Nov 9, 2026
12.187.251.0/24
No anonymizer space · no proxy exits in 30 daysCitizens Energy Group · 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) | 5,311 297 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 the announcement: those covering it, widest first, then every record inside it, 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@ |
| └ 12.187.251.0/24 | 256 | CITIZENS84-251 | Citizens Energy Group (CEG-41) · US | Reassigned | Feb 13, 2015 | — |
Network & registry
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
Origin network
AS393787
US
- Name
- Citizens Energy Group
- Type
- Business
- Registered
- Jan 29, 2015
- Industry
- Natural Gas Distribution
- Spamhaus ASN-DROP
- not listed
Routing timeline
Covering aggregate above, the prefix's own history below
Summary
Routing history
- Pattern
- Stable
- First seen
- Feb 2015
- Current origin since
- Feb 2015 · 12 yr
- Origin networks
- 1
Whois
Registration for this announcement
- Range
- 12.
187. 251. 0/ 24 - Netname
- CITIZENS84-251
- Registrant
- Citizens Energy Group
- Organization
- Citizens Energy Group (CEG-41)
- Org address
- 401 N SHADELAND AV, INDIANAPOLIS, IN, 46219
- Org country
- US
- Type
- Reassigned
- Handle
- NET-12-187-251-0-1
- Parent
- NET-12-0-0-0-1
- Created
- Feb 13, 2015
- 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