Data as of Nov 7, 2026
12.72.140.0/24
2 residential-proxy exits · 30 daysAT&T Enterprises, LLC
Residential-proxy exits
Proxy exits
2
0.78% of its addresses · 30 days
Always-on exits
1
50% of its exits
Providers
21
selling exits here
Oct 8, 2026 – Nov 6, 2026
Exits seen per day
3.8K observations
Proxy providers listing exits
- Ake.net
- BirdProxies
- ByteProxies
- Byteful
- CliProxy
- EnigmaProxy
- FlashProxy
- GonzoProxy
- Infatica
- LemonBright
- MangoProxy
- NodeMaven
- NovaProxy
- Proxiware
- Proxy-Seller
- ProxyEmpire
- ProxyRack
- Proxyma
- RainProxy
- Shifter
- VitalExclusive
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Proxy exits | Holder | RPKI |
|---|---|---|---|---|---|
| 12.72.128.0/17 since Oct 2025 | AS20057 | Mobile | 8 1 always on | AT&T Enterprises, LLC | |
| 12.0.0.0/9 | AS7018 | Residential | 8,064 434 always on | AT&T Enterprises, LLC | |
| 12.0.0.0/8 | AS7018 | Residential | 13,307 719 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@ |
| └ 12.72.0.0/15 | 131,072 | ATTSVC-12-72-0-0 | AT&T Worldnet Services (C00686968) · US | Reassigned | Oct 15, 2003 | abuse@ via ATT |
A contact marked “via” is the registry's: the record names none of its own, so the registry hands down its parent's.
Network & registry
Announced by
Covering announcement 12.72.136.0/21
- Prefix
- 12.72.136.0/21
- Announced by
- AS20057 AT&T Enterprises, LLC
- Type
- Mobile
- Proxy exits
- 4
- Always-on exits
- 1
- RPKI
- RPKI valid
- Netname
- ATTSVC-12-72-0-0
- Registrant
- AT&T Worldnet Services
- 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
Origin network
AS20057
US
- Name
- AT&T Enterprises, LLC
- Type
- Internet provider
- Registered
- Mar 20, 2001
- Domain
- att.com
- Industry
- Internet Service Provider (ISP)
- Spamhaus ASN-DROP
- not listed
Routing timeline
Covering aggregate above, the prefix's own history below
12.72.136.0/21
Routing history
- Pattern
- Stable
- First seen
- Jan 2026
- Current origin since
- Jan 2026 · 10 mo
- Origin networks
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 12.72.136.0/21 | AS20057 | /21 | ARIN | RPKI valid |
| 12.72.128.0/17 | AS20057 | /17 | ARIN | Too specific |
Whois
Registration for this announcement
- Range
- 12.
72. 0. 0/ 15 - Netname
- ATTSVC-12-72-0-0
- Registrant
- AT&T Worldnet Services
- Organization
- AT&T Worldnet Services (C00686968)
- Type
- Reassigned
- Handle
- NET-12-72-0-0-1
- Parent
- NET-12-0-0-0-1
- Created
- Oct 15, 2003
- 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