Data as of Nov 9, 2026
204.127.128.0/17
No anonymizer space · no proxy exits in 30 daysAT&T Enterprises, LLC
Announcements
Nesting
More-specifics by size
Sized by addresses, colored by each announcement's type. Click a tile with children to zoom in, a leaf to open it.
More specific
Announcements inside
| Prefix | Origin | Type | Holder | RPKI |
|---|---|---|---|---|
| 204.127.189.0/24 since Aug 2018 | AS7018 | Residential | AT&T Enterprises, LLC | |
| 204.127.196.0/24 since Nov 2015 | AS4466 | Business | AT&T Enterprises, LLC | |
| 204.127.240.0/24 since Sep 2011 | AS4468 | Internet provider | AT&T Enterprises, LLC | |
| 204.127.241.0/24 since Nov 2011 | AS4468 | Internet provider | AT&T Enterprises, LLC | |
| 204.127.242.0/24 since Nov 2011 | AS4468 | Internet provider | AT&T Enterprises, LLC | |
| 204.127.245.0/24 since Nov 2015 | AS4468 | Internet provider | AT&T Enterprises, LLC | |
| 204.127.249.0/24 since Oct 2015 | AS4468 | Internet provider | AT&T Enterprises, LLC | |
| 204.127.251.0/24 since Sep 2015 | AS4468 | Internet provider | AT&T Enterprises, LLC |
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 |
|---|---|---|---|---|---|---|
| 204.127.0.0/16 | 65,536 | ATTPLS | AT&T Enterprises, LLC (AEL-360) · US | Direct Allocation | Aug 22, 1994 | abuse@ |
| └ 204.127.128.0/18 | 16,384 | ATTSVC-204-127-128-0 | AT&T Consumer IP Services (C00728607) · US | Reassigned | Dec 17, 2003 | abuse@ via ATTPLS |
| └ 204.127.192.0/22 | 1,024 | ATTW-041709173015 | unknown | — | — | — |
| └ 204.127.196.0/23 | 512 | ATTW-041709173017 | WHDC Pool ATTCT-RWCCA (C02207851) · US | Reassigned | Apr 17, 2009 | abuse@ via ATTPLS |
| └ 204.127.198.0/24 | 256 | ATT-CCAST | unknown | — | — | — |
| └ 204.127.200.0/23 | 512 | ATTW-041709173018 | unknown | — | — | — |
| └ 204.127.202.0/24 | 256 | ATT-CCAST2 | unknown | — | — | — |
| └ 204.127.203.0/25 | 128 | ATT-ASP-MSO | unknown | — | — | — |
| └ 204.127.204.0/22 | 1,024 | ATTW-041709173019 | unknown | — | — | — |
| └ 204.127.208.0/23 | 512 | ATTW-041709173020 | unknown | — | — | — |
| └ 204.127.210.0/23 | 512 | ATTW-041709173022 | unknown | — | — | — |
| └ 204.127.212.0/22 | 1,024 | ATTW-041709173023 | unknown | — | — | — |
| └ 204.127.216.0/21 | 2,048 | ATTW-041709161146 | unknown | — | — | — |
| └ 204.127.224.0/20 | 4,096 | ATTSVC-204-127-224-0 | unknown | — | — | — |
| └ 204.127.240.0/20 | 4,096 | ATTSVC-204-127-240-0 | AT&T Consumer IP Services (C00728608) · US | Reassigned | Dec 17, 2003 | abuse@ via ATTPLS |
A contact marked “via” is the registry's: the record names none of its own, so the registry hands down its parent's.
Composition
The types across the prefix's announced space, by addresses.
Announced space
Address share
Announced space
Types across the prefix
32,768 addresses
| Type | Addresses | Share | Ranges | |
|---|---|---|---|---|
| Residential | 30,976 | 95% | 8 | |
| Internet provider | 1,536 | 4.7% | 6 | |
| Business | 256 | 0.78% | 1 |
Network & registry
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 this prefix
Summary
Routing history
- Pattern
- Stable
- First seen
- May 2005
- Current origin since
- May 2005 · 22 yr
- Origin networks
- 1
IRR inside
Route objects inside
| Prefix | Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|---|
| 204.127.220.0/22 | AS25845 | RADB | VMMC-BLK-3 | MAINT-AS101 | Nov 13, 2023 |
| 204.127.243.0/24 | AS4468 | RADB | To allow peers filting on AS to accept this prefix | MAINT-AS7132 | Nov 13, 2023 |
| 204.127.246.0/24 | AS4468 | RADB | To allow routing to other ISPs | MAINT-AS7132 | Nov 13, 2023 |
| 204.127.247.0/24 | AS4468 | RADB | To allow routing to other ISPs | MAINT-AS7132 | Nov 13, 2023 |
| 204.127.250.0/24 | AS4468 | RADB | To allow routing to other ISPs | MAINT-AS7132 | Nov 13, 2023 |
Whois
Registration for this announcement
- Range
- 204.
127. 0. 0/ 16 - Netname
- ATTPLS
- 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-204-127-0-0-1
- Parent
- NET-204-0-0-0-0
- Created
- Aug 22, 1994
- RIR
- ARIN
- Country
- US
- Delegated
- Aug 22, 1994
- Status
- assigned
Report abuse
Abuse contact
- abuse@
att. net - Name
- abuse
- Phone
- +1-919-319-8167
- Handle
- ABUSE7-ARIN