Data as of Nov 9, 2026
173.245.51.0/24
No anonymizer space · no proxy exits in 30 daysCloudflare · space held by Cloudflare, Inc.
Announcement
this exact prefix
RPKI valid
Announced by
Type
Privacy relay
Risk
35 / 100 · Medium
Recently moved
Recent change
New origin Sep 28, 2026
from AS13335 Cloudflare, Inc., after 8.8 years unannounced
Operators, sellers and brokers
Privacy relays
| Name | Parent | In 173.245.51.0/24 | /24s |
|---|---|---|---|
| Cloudflare WARP | Cloudflare | 256100% | 1 |
Network & registry
Origin network
AS22061
US
- Name
- Cloudflare
- Type
- Hosting
- Registered
- Sep 9, 2026
- Domain
- cloudflare.com
- Spamhaus ASN-DROP
- not listed
Routing timeline
Who has announced this prefix
Summary
Routing history
- Pattern
- Reactivated
- First seen
- Jun 2011
- Current origin since
- Sep 28, 2026 · 1 mo
- Origin networks
- 2
- Last change of origin
- Sep 28, 2026
Recorded history
History
- Handoffs
- 1
Whois
Registration for this announcement
- Range
- 173.
245. 48. 0/ 20 - Netname
- CLOUDFLARENET
- Registrant
- Cloudflare, Inc.
- Organization
- Cloudflare, Inc. (CLOUD14)
- Org address
- 101 Townsend Street, San Francisco, CA, 94107
- Org country
- US
- Type
- Direct Allocation
- Handle
- NET-173-245-48-0-1
- Parent
- NET-173-0-0-0-0
- Created
- Dec 28, 2010
- RIR
- ARIN
- Country
- US
- Delegated
- Dec 28, 2010
- Status
- assigned
Report abuse
Abuse contact
- abuse@
cloudflare. com - Name
- Abuse
- Phone
- +1-650-319-8930
- Handle
- ABUSE2916-ARIN