Data as of Nov 10, 2026
75.3.99.0/27
No anonymizer space · no proxy exits in 30 daysAT&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 |
|---|---|---|---|---|---|---|
| 75.3.64.0/18 | 16,384 | SBCIS-SBIS-6BLK | AT&T Enterprises, LLC (AEL-360) · US | Direct Allocation | Feb 28, 2006 | abuse@ |
| └ 75.3.99.0/27 | 32 | SBC-75-3-99-0-27-2308284742 | unknown | — | — | — |
Network & registry
Announced by
Covering announcement 75.3.64.0/18
- Prefix
- 75.3.64.0/18
- Announced by
- AS7018 AT&T Enterprises, LLC
- Type
- Residential
- Proxy exits
- 179
- Always-on exits
- 39
- RPKI
- RPKI valid
- Netname
- SBCIS-SBIS-6BLK
- Registrant
- AT&T Enterprises, LLC
- RIR
- ARIN
Origin network
AS7018
US
- Name
- AT&T Enterprises, LLC
- Type
- Internet provider
- Registered
- Jul 30, 1996
- Domain
- att.com
- Website
- www.att.com
- Industry
- Internet Service Provider (ISP)
- Spamhaus ASN-DROP
- not listed
Routing timeline
Who has announced 75.3.64.0/18
75.3.64.0/18
Routing history
- Pattern
- Stable
- First seen
- Dec 2017
- Current origin since
- Dec 2017 · 8.9 yr
- Origin networks
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 75.3.64.0/18 | AS7018 | /18 | ARIN | RPKI valid |
Whois
Registration for this announcement
- Range
- 75.
3. 64. 0/ 18 - Netname
- SBCIS-SBIS-6BLK
- 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-75-3-64-0-1
- Parent
- NET-75-0-0-0-0
- Created
- Feb 28, 2006
- RIR
- ARIN
- Country
- US
- Delegated
- Feb 28, 2006
- Status
- assigned
Report abuse
Abuse contact
- abuse@
att. net - Name
- abuse
- Phone
- +1-919-319-8167
- Handle
- ABUSE7-ARIN