Data as of Nov 9, 2026
206.140.121.0/24
No anonymizer space · no proxy exits in 30 daysAT&T Enterprises, LLC · space held by AT&T Services, Inc.
Registrations in this block
The registry's network records over the announcement: those covering it, widest first, then every record inside it, under its parent.
| Range | Addresses | Netname | Holder | Type | Created | Abuse contact |
|---|---|---|---|---|---|---|
| 206.140.0.0/15 | 131,072 | AADS-BLK-2 | AT&T Services, Inc. (ATTSE-Z) · US | Direct Allocation | Sep 28, 1995 | — |
| └ 206.140.96.0/19 | 8,192 | ATTIS-206140960 | AT&T Internet Services (SIS-80) · US | Reallocated | Sep 11, 2009 | — |
| └ 206.140.120.0/23 | 512 | SBCIS-091109161051 | City of Cleveland, Division of Water - 1152410 (C02314262) · US | Reassigned | Sep 11, 2009 | — |
Network & registry
IPv4 market
Holder
- Organization
- AT&T Services, Inc.
- Handle
- ATTSE-Z
- Range
- 206.
140. 0. 0/ 15 - Registration type
- Direct Allocation
- Record created
- Sep 28, 1995
- Legacy
- yes
- Reallocated to
- AT&T Internet Services (SIS-80)
- Reallocated range
- 206.
140. 96. 0/ 19 - Reallocated
- Sep 11, 2009
Origin network
AS2386
US
- Name
- AT&T Enterprises, LLC
- Type
- Internet provider
- Registered
- Feb 3, 1993
- Domain
- att.com
- Website
- qsun.att.com
- Industry
- Internet Service Provider (ISP)
- Spamhaus ASN-DROP
- not listed
Routing timeline
Who has announced this prefix
Summary
Routing history
- Pattern
- Stable
- First seen
- May 2020
- Current origin since
- May 2020 · 6.5 yr
- Origin networks
- 1
Whois
Registration for this announcement
- Range
- 206.
140. 120. 0/ 23 - Netname
- SBCIS-091109161051
- Registrant
- City of Cleveland, Division of Water - 1152410
- Organization
- City of Cleveland, Division of Water - 1152410 (C02314262)
- Type
- Reassigned
- Handle
- NET-206-140-120-0-1
- Parent
- NET-206-140-96-0-1
- Created
- Sep 11, 2009
- RIR
- ARIN
- Country
- US
- Delegated
- Sep 28, 1995
- Status
- assigned
Report abuse
Abuse contact
- abuse@
att. net - Name
- Abuse ATT Internet Services
- Phone
- +1-919-319-8167
- Handle
- ABUSE6-ARIN