Data as of Nov 4, 2026
185.
- Proxy activity
- Not seen in 30 days
- Type
- Hosting
- Risk
- 50 / 100 · Medium
- Announced by
- AS39563CTA Systems B.V.Hosting
- Announcement
- 185.231.16.0/24RPKI valid
- Company
- UC Systems COLO · ucsystems.nl
- Location
- Delft, South Holland, The Netherlands
Network & registry
Announced by
Announcement
- Prefix
- 185.231.16.0/24
- Announced by
- AS39563 CTA Systems B.V.
- Type
- Hosting
- Proxy exits
- 3
- RPKI
- RPKI valid
Registry
Holder
- Organization
- CTA Systems B.V.
- Handle
- ORG-CSB11-RIPE
- Range
- 185.
231. 16. 0/ 22 - Registration type
- ALLOCATED PA
- Record created
- Nov 9, 2017
- Reallocated to
- UC Systems COLO
- Reallocated range
- 185.
231. 16. 0/ 24 - Reallocation type
- LIR-PARTITIONED PA
- Reallocated
- Jul 16, 2019
Origin network
AS39563
NL
- Name
- CTA Systems B.V.
- Type
- Hosting
- Registered
- Nov 10, 2017
- Domain
- ucsystems.nl
- Website
- ucsystems.nl
- Industry
- Computer and Information Technology
- Spamhaus ASN-DROP
- not listed
Routing timeline
Who has announced 185.231.16.0/24
185.231.16.0/24
Routing history
- Pattern
- Stable
- First seen
- Jul 2019
- Current origin since
- Jul 2019 · 7.3 yr
- Origin networks
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 185.231.16.0/24 | AS39563 | /24 | RIPE | RPKI valid |
IRR
Route objects on 185.231.16.0/24
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS39563 | RIPE | UCSYSTEMS-MNT | Jun 3, 2021 |
Whois
Registration for this address
- Range
- 185.
231. 16. 0/ 24 - Netname
- NL-UCSYSTEMS-20171109-1
- Registrant
- UC Systems COLO
- Registrant country
- NL
- Organization
- UC Systems COLO
- Org country
- NL
- Type
- LIR-PARTITIONED PA
- Created
- Jul 16, 2019
- Updated
- Jun 3, 2021
- Maintainer
- UCSYSTEMS-MNT
- RIR
- RIPE NCC
- Country
- NL
- Delegated
- Nov 9, 2017
- Status
- assigned
Report abuse
Abuse contact
- abuse@
ucsystems. nl - Name
- Abuse-C Role
- Handle
- AR43752-RIPE
Geolocation
Location detail
- Country
- The Netherlands
- Region
- South Holland
- City
- Delft
- Coordinates
- 52.
0067, 4. 3556 - Time zone
- Europe/Amsterdam
- Continent
- Europe
- EU
- yes
- GeoNames
- 2757345