Data as of Nov 10, 2026
209.136.4.0/24
No anonymizer space · no proxy exits in 30 daysAS23357 · space held by Level 3 Parent, LLC
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Proxy exits | Holder | RPKI |
|---|---|---|---|---|---|
| 209.136.0.0/16 since Nov 2016 | AS3549 | Internet provider | 49 6 always on | Level 3 Parent, 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 |
|---|---|---|---|---|---|---|
| 209.136.0.0/16 | 65,536 | ESPIRE-4BL | Level 3 Parent, LLC (LPL-141) · US | Direct Allocation | Aug 22, 1997 | abuse@ |
| └ 209.136.4.0/24 | 256 | TWTC-CYX4 | CyberXpress, Inc. (CYBERX-1) · US | Reassigned | Aug 20, 2014 | — |
Network & registry
IPv4 market
Holder
- Organization
- Level 3 Parent, LLC
- Handle
- LPL-141
- Range
- 209.
136. 0. 0/ 16 - Registration type
- Direct Allocation
- Record created
- Aug 22, 1997
- Legacy
- yes
Origin network
AS23357
ZZ
- Type
- Internet provider
- Registered
- Nov 9, 2026
- Domain
- cxpnet.com
- Spamhaus ASN-DROP
- not listed
Routing timeline
Covering aggregate above, the prefix's own history below
Summary
Routing history
- Pattern
- Stable
- First seen
- May 2005
- Current origin since
- May 2005 · 22 yr
- Origin networks
- 1
IRR
Route objects on the exact prefix
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS23357 | RADB | Comcast Cable Communications, Inc. | MAINT-AS7922 | Nov 13, 2023 |
Whois
Registration for this announcement
- Range
- 209.
136. 4. 0/ 24 - Netname
- TWTC-CYX4
- Registrant
- CyberXpress, Inc.
- Organization
- CyberXpress, Inc. (CYBERX-1)
- Org address
- 301 West Bay Street, Suite, Jacksonville, FL, 32202
- Org country
- US
- Type
- Reassigned
- Handle
- NET-209-136-4-0-1
- Parent
- NET-209-136-0-0-1
- Created
- Aug 20, 2014
- RIR
- ARIN
- Country
- US
- Delegated
- Aug 22, 1997
- Status
- assigned
Report abuse
Abuse contact
- dave@
cxpnet. com - Name
- Shields, David
- Phone
- +1-904-354-3992
- Handle
- DKS7-ARIN