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InternetData
IPv4 address

205.217.19.0

An address in San Francisco, California, United States, used by Certain Software, Inc., announced by CenturyLink Communications, LLC (AS3561). None of our anonymity, network or service databases holds it.

6 of 22 address-keyed databases hold it

Summary
Company
Certain Software, Inc.
Prefix
205.217.0.0/19
Registered to
Certain Software, Inc.
Network type
ISP
Abuse contact
Jdodson@certain.com
Anycast
No

Anonymity

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

0 of 8 hold it

Ownership

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

4 of 6 hold it
Company
Certain Software, Inc.
Domain
certain.com
Type
Business
Registered in
United States
AS number
AS3561
Name
CenturyLink Communications, LLC
Prefix
205.217.0.0/19
RPKI
not found
Type
ISP
Domain
lumen.com
Registered in
United States
Name
Certain Software, Inc.
Handle
SAVV-S604859-0
Organization
CERTA-3
Status
reallocation
Registry
arin
Domain
certain.com
Name
Jonathan Dodson
Phone
+1-415-345-2722
Address
75 Hawthorne Sr, STE 300,, San Francisco, CA, 94105
Network
205.217.19.0-205.217.19.255
Not seen inIP RWHOISIP RDNS

Geolocation

Where the address is, and what that place uses.

2 of 2 hold it
City
San Francisco
Region
California
Postal code
94102
Continent
North America
Timezone
America/Los_Angeles

Network

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

0 of 3 hold it

Services

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, with 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 rather than by seat.
Annual terms, a named contact, and monthly, quarterly or yearly payment.