Data as of Nov 9, 2026
173.226.73.0/24
No anonymizer space · no proxy exits in 30 daysBlack Knight IP Holding Company, LLC · 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 | 18 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@ |
| └ 173.226.72.0/21 | 2,048 | CTL-BLKNI5 | Black Knight IP Holding Company, LLC (BKIHL) · US | Reassigned | Feb 20, 2019 | — |
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
AS31874
US
- Name
- Black Knight IP Holding Company, LLC
- Type
- Business
- Registered
- Mar 3, 2010
- Domain
- blackandco.com
- Industry
- Software Development
- Spamhaus ASN-DROP
- not listed
Routing timeline
Covering aggregate above, the prefix's own history below
Summary
Routing history
- Pattern
- Rotating
- First seen
- Feb 2010
- Current origin since
- Nov 2021 · 4.9 yr
- Origin networks
- 2
- Last change of origin
- Nov 2021
Recorded history
History
- Handoffs
- 1
Whois
Registration for this announcement
- Range
- 173.
226. 72. 0/ 21 - Netname
- CTL-BLKNI5
- Registrant
- Black Knight IP Holding Company, LLC
- Organization
- Black Knight IP Holding Company, LLC (BKIHL)
- Org address
- 601 Riverside Ave., Jacksonville, FL, 32204
- Org country
- US
- Type
- Reassigned
- Handle
- NET-173-226-72-0-1
- Parent
- NET-173-226-0-0-1
- Created
- Feb 20, 2019
- RIR
- ARIN
- Country
- US
- Delegated
- Jan 8, 2010
- Status
- assigned
Report abuse
Abuse contact
- ipadmin@
bkfs. com - Name
- IP Admin
- Phone
- +1-904-854-3600
- Handle
- IPADM465-ARIN