Data as of Nov 6, 2026
216.103.243.128/25
No anonymizer space · no proxy exits in 30 daysAT&T Enterprises, LLC
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Proxy exits | Holder | RPKI |
|---|---|---|---|---|---|
| 216.100.0.0/14 since Nov 2021 | AS7018 | Residential | 804 78 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 |
|---|---|---|---|---|---|---|
| 216.100.0.0/14 | 262,144 | SBCIS-SIS80 | AT&T Enterprises, LLC (AEL-360) · US | Direct Allocation | Oct 2, 1998 | abuse@ |
| └ 216.103.243.128/25 | 128 | SBC21610324312825041117133939 | unknown | — | — | — |
Network & registry
Announced by
Covering announcement 216.103.243.0/24
- Prefix
- 216.103.243.0/24
- Announced by
- AS7287 AT&T Enterprises, LLC
- Type
- Mobile
- RPKI
- RPKI valid
- Netname
- SBCIS-SIS80
- Registrant
- AT&T Enterprises, LLC
- RIR
- ARIN
Origin network
AS7287
US
- Name
- AT&T Enterprises, LLC
- Type
- Internet provider
- Registered
- Nov 1, 1996
- Domain
- att.com
- Industry
- Internet Service Provider (ISP)
- Spamhaus ASN-DROP
- not listed
Routing timeline
Covering aggregate above, the prefix's own history below
216.103.243.0/24
Routing history
- Pattern
- Stable
- First seen
- Jun 2025
- Current origin since
- Jun 2025 · 1.4 yr
- Origin networks
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 216.103.243.0/24 | AS7287 | /24 | ARIN | RPKI valid |
Whois
Registration for this announcement
- Range
- 216.
100. 0. 0/ 14 - Netname
- SBCIS-SIS80
- 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-216-100-0-0-1
- Parent
- NET-216-0-0-0-0
- Created
- Oct 2, 1998
- RIR
- ARIN
- Country
- US
- Delegated
- Oct 2, 1998
- Status
- assigned
Report abuse
Abuse contact
- abuse@
att. net - Name
- abuse
- Phone
- +1-919-319-8167
- Handle
- ABUSE7-ARIN