Data as of Nov 10, 2026
66.72.72.0/21
No anonymizer space · no proxy exits in 30 daysAT&T Enterprises, LLC
Composition
The types across the prefix's announced space, by addresses.
Announced space
Address share
Announced space
Types across the prefix
2,048 addresses
| Type | Addresses | Share | Ranges | |
|---|---|---|---|---|
| Residential | 1,792 | 88% | 2 | |
| Business | 256 | 13% | 1 |
Network & registry
Announced by
Covering announcement 66.72.0.0/15
- Prefix
- 66.72.0.0/15
- Announced by
- AS7018 AT&T Enterprises, LLC
- Type
- Residential
- Proxy exits
- 427
- Always-on exits
- 56
- RPKI
- No RPKI
- Netname
- SBCIS-SIS80
- 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 66.72.0.0/15
66.72.0.0/15
Routing history
- Pattern
- Stable
- First seen
- May 2005
- Current origin since
- May 2011 · 15 yr
- Origin networks
- 2
- Last change of origin
- May 2011
Recorded history
History
- Handoffs
- 1
IRR
Route objects on 66.72.0.0/15
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS7132 not the origin | RADB | ARIN Allocation | MAINT-AS7132 | Nov 13, 2023 |
Whois
Registration for this announcement
- Range
- 66.
72. 0. 0/ 15 - 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-66-72-0-0-1
- Parent
- NET-66-0-0-0-0
- Created
- Jan 29, 2001
- RIR
- ARIN
- Country
- US
- Delegated
- Jan 29, 2001
- Status
- assigned
Report abuse
Abuse contact
- abuse@
att. net - Name
- abuse
- Phone
- +1-919-319-8167
- Handle
- ABUSE7-ARIN