Data as of Nov 12, 2026
72.223.240.0/21
No anonymizer space · no proxy exits in 30 daysCox Communications Inc.
Announcement
this exact prefix
RPKI valid
Announced by
Type
Residential
Recent change
New origin Oct 22, 2026
its first announcement on record
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Proxy exits | Holder | RPKI |
|---|---|---|---|---|---|
| 72.192.0.0/11 | AS22773 | Residential | 21,941 3,743 always on | Cox Communications Inc. |
More specific
Announcements inside
| Prefix | Origin | Type | Holder | RPKI |
|---|---|---|---|---|
| 72.223.244.0/22 since Nov 3, 2026 | AS22773 | Residential | Cox Communications 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 |
|---|---|---|---|---|---|---|
| 72.192.0.0/11 | 2,097,152 | NETBLK-COX-ATLANTA-11 | Cox Communications Inc. (CXA) · US | Direct Allocation | Aug 3, 2005 | abuse@ |
| └ 72.223.128.0/17 | 32,768 | NETBLK-LV-72-223-128-0 | Cox Communications Inc. (C06151144) · US | Reassigned | Jun 16, 2016 | abuse@ via NETBLK-COX-ATLANTA-11 |
A contact marked “via” is the registry's: the record names none of its own, so the registry hands down its parent's.
Network & registry
IPv4 market
Holder
- Organization
- Cox Communications Inc.
- Handle
- CXA
- Range
- 72.
192. 0. 0/ 11 - Registration type
- Direct Allocation
- Record created
- Aug 3, 2005
Origin network
AS22773
US
- Name
- Cox Communications Inc.
- Type
- Internet provider
- Registered
- Nov 20, 2001
- Domain
- cox.com
- Website
- www.cox.com/peering
- Industry
- Internet Service Provider (ISP)
- Spamhaus ASN-DROP
- not listed
Routing timeline
Covering aggregate above, the prefix's own history below
Summary
Routing history
- Pattern
- Stable
- First seen
- Oct 22, 2026
- Current origin since
- Oct 22, 2026 · under a month
- Origin networks
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 72.223.240.0/21 | AS22773 | /21 | ARIN | RPKI valid |
| 72.192.0.0/11 | AS22773 | /11 | ARIN | Too specific |
Whois
Registration for this announcement
- Range
- 72.
223. 128. 0/ 17 - Netname
- NETBLK-LV-72-223-128-0
- Registrant
- Cox Communications Inc.
- Organization
- Cox Communications Inc. (C06151144)
- Type
- Reassigned
- Handle
- NET-72-223-128-0-1
- Parent
- NET-72-192-0-0-1
- Created
- Jun 16, 2016
- RIR
- ARIN
- Country
- US
- Delegated
- Aug 3, 2005
- Status
- assigned
Report abuse
Abuse contact
- abuse@
charter. net - Name
- Abuse
- Phone
- +1-877-777-2263
- Handle
- ABUSE19-ARIN