Data as of Nov 5, 2026
185.183.28.0/24
No anonymizer space · no proxy exits in 30 daysProofpoint, Inc.
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Holder | RPKI |
|---|---|---|---|---|
| 185.183.28.0/22 since Jan 2017 | AS52129 | Business | Proofpoint, Inc. |
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 |
|---|---|---|---|---|---|---|
| 185.183.28.0/22 | 1,024 | US-PROOFPOINT-INC-20161220 | Proofpoint, Inc. (ORG-PI69-RIPE) · US | ALLOCATED PA | Dec 20, 2016 | abuse@ |
| └ 185.183.28.0/23 | 512 | pfptnl | unknown | ASSIGNED PA | Sep 1, 2025 | abuse@ via US-PROOFPOINT-INC-20161220 |
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
Registry
Holder
- Organization
- Proofpoint, Inc.
- Handle
- ORG-PI69-RIPE
- Range
- 185.
183. 28. 0/ 22 - Registration type
- ALLOCATED PA
- Record created
- Dec 20, 2016
Origin network
AS52129
US
- Name
- Proofpoint, Inc.
- Type
- Business
- Registered
- Jan 5, 2011
- Domain
- proofpoint.com
- Website
- www.proofpoint.com/
- Industry
- Software Development
- Spamhaus ASN-DROP
- not listed
Routing timeline
Covering aggregate above, the prefix's own history below
Summary
Routing history
- Pattern
- Stable
- First seen
- Jan 2017
- Current origin since
- Jan 2017 · 9.8 yr
- Origin networks
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 185.183.28.0/24 | AS52129 | /24 | RIPE | RPKI valid |
| 185.183.28.0/22 | AS52129 | /22 | RIPE | Too specific |
IRR
Route objects on the exact prefix
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS52129 | RIPE | PROOFPOINT-EU-MNT | Jan 27, 2017 |
Whois
Registration for this announcement
- Range
- 185.
183. 28. 0/ 23 - Netname
- pfptnl
- Registrant country
- NL
- Organization
- Not stated by the registry
- Type
- ASSIGNED PA
- Created
- Sep 1, 2025
- Updated
- Sep 1, 2025
- Maintainer
- PROOFPOINT-EU-MNT
- RIR
- RIPE NCC
- Country
- US
- Delegated
- Dec 20, 2016
- Status
- assigned
Report abuse
Abuse contact
- abuse@
proofpoint. com - Name
- Abuse-C Role
- Handle
- AR38637-RIPE