Data as of Nov 3, 2026
12.203.115.0/24
No anonymizer space · no proxy exits in 30 daysDeloitte Services - SLTC · space held by AT&T Enterprises, LLC
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Leased from | Proxy exits | Holder | RPKI |
|---|---|---|---|---|---|---|
| 12.203.114.0/23 since Aug 2011 | AS53806 | Business | AT&T Enterprises, LLC via AT&T Services, Inc. | |||
| 12.128.0.0/9 | AS7018 | Residential | IP broker Rackdog (part) | 5,160 278 always on | AT&T Enterprises, LLC | |
| 12.0.0.0/8 | AS7018 | Residential | 13,255 715 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 | [email protected] |
| └ 12.203.0.0/16 | 65,536 | ATTWORLD25 | AT&T Services, Inc. (ATTW) · US | Reallocated | May 4, 2010 | — |
| └ 12.203.114.0/23 | 512 | ATT-NET-12-203-114-0 | Deloitte Services - SLTC (DELOI-12) · US | Reassigned | Nov 21, 2025 | [email protected] |
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
- Reallocated to
- AT&T Services, Inc. (ATTW)
- Reallocated range
- 12.203.0.0/16
- Reallocated
- May 4, 2010
Origin network
AS53806
US
- Name
- Deloitte Services - SLTC
- Type
- Business
- Registered
- Jun 1, 2011
- Domain
- deloitte.com
- Industry
- Service
- Spamhaus ASN-DROP
- not listed
Routing timeline
Covering aggregate above, the prefix's own history below
Summary
Routing history
- Pattern
- Stable
- First seen
- Nov 2025
- Current origin since
- Nov 2025 · 11 mo
- Origin networks
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 12.203.114.0/23 | AS53806 | /24 | ARIN | RPKI valid |
Whois
Registration for this announcement
- Range
- 12.203.114.0/23
- Netname
- ATT-NET-12-203-114-0
- Registrant
- Deloitte Services - SLTC
- Organization
- Deloitte Services - SLTC (DELOI-12)
- Org address
- 2501 WESTLAKE PKWY, WESTLAKE, TX, 76262
- Org country
- US
- Type
- Reassigned
- Handle
- NET-12-203-114-0-1
- Parent
- NET-12-203-0-0-1
- Created
- Nov 21, 2025
- RIR
- ARIN
- Country
- US
- Delegated
- Aug 23, 1983
- Status
- assigned
Report abuse
Abuse contact
- [email protected]
- Name
- hostmaster
- Phone
- +1-615-882-7600
- Handle
- HOSTM238-ARIN