Data as of Nov 8, 2026
185.133.172.0/24
No anonymizer space · no proxy exits in 30 daysCloudflare, Inc. · space held by SIOD GmbH
Lineage
How this block came to its use, oldest first. The whole IPv4 market →
185.133.172.0/24
From the registry to its use
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 |
|---|---|---|---|---|---|---|
| 185.133.172.0/22 | 1,024 | DE-SIOD-20160106 | SIOD GmbH (ORG-MG146-RIPE) · DE | ALLOCATED PA | Jan 6, 2016 | ripe@ |
| └ 185.133.172.0/24 | 256 | Zefirius-SRL | unknown | ASSIGNED PA | Sep 16, 2025 | ripe@ |
Network & registry
IPv4 market
Holder
- Organization
- SIOD GmbH
- Handle
- ORG-MG146-RIPE
- Range
- 185.
133. 172. 0/ 22 - Registration type
- ALLOCATED PA
- Record created
- Jan 6, 2016
Origin network
AS13335
US
- Name
- Cloudflare, Inc.
- Type
- Hosting
- Registered
- Jul 14, 2010
- Domain
- cloudflare.com
- Website
- www.cloudflare.com
- Industry
- Hosting and Cloud Provider
- Spamhaus ASN-DROP
- not listed
- VPN servers
- 14
Routing timeline
Who has announced this prefix
Summary
Routing history
- Pattern
- Stable
- First seen
- Oct 2025
- Current origin since
- Oct 2025 · 1.1 yr
- Origin networks
- 1
Whois
Registration for this announcement
- Range
- 185.
133. 172. 0/ 24 - Netname
- Zefirius-SRL
- Registrant country
- CR
- Organization
- Not stated by the registry
- Type
- ASSIGNED PA
- Created
- Sep 16, 2025
- Updated
- Sep 16, 2025
- Maintainer
- interlir-mnt
- RIR
- RIPE NCC
- Country
- DE
- Delegated
- Jan 6, 2016
- Status
- assigned
Report abuse
Abuse contact
- ripe@
interlir. com - Name
- Abuse contact role object
- Handle
- ACRO45564-RIPE