Data as of Nov 3, 2026
Autonomous system
AS14652
COSTAR GROUP Inc.
Announces 3,072 addresses in 10 prefixes. None of it is anonymizer space.
Type
Business
US
Announced prefixes
| Prefix | Type | Holder | RPKI |
|---|---|---|---|
| 8.39.162.0/24 since Nov 2019 | Business | Level 3 Parent, LLC | |
| 8.43.77.0/24 since May 2017 | Business | Level 3 Parent, LLC | |
| 38.103.15.0/24 since Sep 2019 | Business | Cogent Communications, LLC | |
| 38.109.150.0/24 since May 2017 | Business | Cogent Communications, LLC | |
| 63.86.105.0/24 since May 2005 | Business | Verizon Business | |
| 65.210.23.0/24 since Feb 2007 | Business | Verizon Business | |
| 65.210.120.0/24 since Aug 2014 | Business | Verizon Business | |
| 65.222.180.0/23 since May 2005 | Business | Verizon Business | |
| 65.246.30.0/24 since Jul 2020 | Business | Verizon Business | |
| 97.65.16.0/23 since Mar 2016 | Business | Level 3 Parent, LLC |
Network & history
Profile
- Registered
- Jan 20, 2000
- Domain
- costargroup.com
- Industry
- Real Estate (Residential and/or Commercial)
Routing patterns
How its announcements have moved
Arrivals