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InternetData
IPv4 address

185.231.18.249

An address in Giessendam, South Holland, The Netherlands, announced by CTA Systems B.V. (AS39563). Of our anonymity, network and probe databases, it is in VPN IP and Hosting IP.

9 of 21 address-keyed databases hold it

Summary
Company
CTA Systems B.V.
Hostname
core2017.rtr2.eqam7.dc.ucsystems.net
Registered to
UC Systems COLO
Network type
ISP
Abuse contact
abuse@ucsystems.nl
Anycast
No

Anonymity

Whether the address hides someone else: a VPN, Tor, a relay, a proxy pool, or a hosting range.

2 of 7 hold it
Confidence
low
Method
scan
Last seen
2026-10-08
Confidence
medium
Last seen
2026-10-05

Ownership

Who holds the address: the AS announcing it, the registry record, the abuse contact and its name in DNS.

5 of 6 hold it
Company
CTA Systems B.V.
Domain
ucsystems.nl
Type
ISP
Registered in
The Netherlands
AS number
AS39563
Name
CTA Systems B.V.
RPKI
valid
Type
ISP
Domain
ucsystems.nl
Registered in
The Netherlands
Name
UC Systems COLO
Handle
NL-UCSYSTEMS-20171109-3
Status
LIR-PARTITIONED PA
Registry
ripe
Domain
ucsystems.net
Name
Abuse-C Role
Address
Kade 64, 3371 EP, Hardinxveld-Giessendam, NETHERLANDS
Network
185.231.16.0-185.231.19.255
Hostname
core2017.rtr2.eqam7.dc.ucsystems.net
Not seen inIP RWHOIS

Geolocation

Where the address is, and what that place uses.

2 of 2 hold it
City
Giessendam
Region
South Holland
Postal code
3371
Continent
Europe
Coordinates
51.8326, 4.8358
Timezone
Europe/Amsterdam

Network

What kind of network it is on: a mobile carrier, an anycast service, a CDN edge.

0 of 3 hold it

Probe

What our own internet-wide measurement found listening on it.

0 of 3 hold it
00 · Evaluate

Test the real build first.

An evaluation license puts a full current build in your hands — every row, every column, no sampling — so you can measure it against your own traffic before anyone talks about terms.

01 · License

Then license what you use.

Standard, for detection and decisions inside your own product and operations.
Redistribution, when the data ships onward inside what you sell — priced by scope, not by seat.
Annual terms, a named contact, and flexible payment terms — monthly, quarterly or yearly.