Data as of Nov 7, 2026
166.203.163.0/24
2 residential-proxy exits · 30 daysAT&T Enterprises, LLC
Residential-proxy exits
Proxy exits
2
0.78% of its addresses · 30 days
Providers
1
selling exits here
Oct 8, 2026 – Nov 6, 2026
Exits seen per day
2 observations
Proxy providers listing exits
- AnyIP
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Proxy exits | Holder | RPKI |
|---|---|---|---|---|---|
| 166.203.128.0/17 since Oct 2015 | AS20057 | Mobile | 3 | AT&T Enterprises, LLC | |
| 166.203.0.0/16 since Sep 2019 | AS20057 | Mobile | 3 | AT&T Enterprises, LLC | |
| 166.200.0.0/14 since Aug 2026 | AS7018 | Residential | 3 | AT&T Enterprises, LLC |
Network & registry
Announced by
Covering announcement 166.203.160.0/20
- Prefix
- 166.203.160.0/20
- Announced by
- AS20057 AT&T Enterprises, LLC
- Type
- Mobile
- Proxy exits
- 2
- RPKI
- RPKI valid
- Netname
- AEL-360
- Registrant
- AT&T Enterprises, LLC
- RIR
- ARIN
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
166.203.160.0/20
Routing history
- Pattern
- Stable
- First seen
- Sep 2019
- Current origin since
- Sep 2019 · 7.2 yr
- Origin networks
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 166.203.160.0/20 | AS20057 | /20 | ARIN | RPKI valid |
| 166.203.128.0/17 | AS20057 | /17 | ARIN | Too specific |
| 166.203.0.0/16 | AS20057 | /16 | ARIN | Too specific |
| 166.200.0.0/14 | AS7018 | /14 | ARIN | Another network |
IRR
Route objects on 166.203.160.0/20
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS20057 | ARIN | AT&T Enterprises, LLC | MNT-AEL-360 | Sep 15, 2026 |
Whois
Registration for this announcement
- Range
- 166.
183. 0. 0 - 166. 209. 255. 255 - Netname
- AEL-360
- 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-166-183-0-0-1
- Parent
- NET-166-0-0-0-0
- Created
- Apr 1, 2025
- RIR
- ARIN
- Country
- US
- Delegated
- Apr 1, 2025
- Status
- assigned
Report abuse
Abuse contact
- abuse@
att. net - Name
- abuse
- Phone
- +1-919-319-8167
- Handle
- ABUSE7-ARIN