Data as of Nov 8, 2026
173.227.174.0/24
No anonymizer space · no proxy exits in 30 daysCooley LLP · space held by Level 3 Parent, LLC
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Proxy exits | Holder | RPKI |
|---|---|---|---|---|---|
| 173.226.0.0/15 since Oct 2016 | AS3549 | Residential | 20 4 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 |
|---|---|---|---|---|---|---|
| 173.226.0.0/15 | 131,072 | TWTC-NETBLK-18 | Level 3 Parent, LLC (LPL-141) · US | Direct Allocation | Jan 8, 2010 | abuse@ |
| └ 173.227.174.0/24 | 256 | TWTC-COOLEY | Cooley LLP (C03234950) · US | Reassigned | Dec 18, 2012 | abuse@ via TWTC-NETBLK-18 |
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
- Level 3 Parent, LLC
- Handle
- LPL-141
- Range
- 173.
226. 0. 0/ 15 - Registration type
- Direct Allocation
- Record created
- Jan 8, 2010
Origin network
AS54571
US
- Name
- Cooley LLP
- Type
- Business
- Registered
- Mar 21, 2012
- Domain
- cooley.com
- Industry
- Service
- Spamhaus ASN-DROP
- not listed
Routing timeline
Covering aggregate above, the prefix's own history below
Summary
Routing history
- Pattern
- Stable
- First seen
- Nov 2012
- Current origin since
- Nov 2012 · 14 yr
- Origin networks
- 1
Whois
Registration for this announcement
- Range
- 173.
227. 174. 0/ 24 - Netname
- TWTC-COOLEY
- Registrant
- Cooley LLP
- Organization
- Cooley LLP (C03234950)
- Type
- Reassigned
- Handle
- NET-173-227-174-0-1
- Parent
- NET-173-226-0-0-1
- Created
- Dec 18, 2012
- RIR
- ARIN
- Country
- US
- Delegated
- Jan 8, 2010
- Status
- assigned
Report abuse
Abuse contact
- abuse@
level3. com - Name
- L3 Abuse Contact
- Phone
- +1-877-453-8353
- Handle
- LAC56-ARIN