ASN database

You may find these sub-pages interesting as well:

Related tools

DNS lookup / nslookup / DIG of DNS records. An online tool for DNS lookups. By default recursive lookups querying the authoritative name servers. Lookups on specific DNS resolvers are also possible. Additionally, it will look up secondary records and output a full log of what was done on a technical level.

WHOIS / RDAP lookup

IP to CIDR calculation tool with subnet info. The reverse, CIDR ranges to IP addresses, is also possible. Last but not least, it includes a tool for refactoring groups of IPs, domain names, and/or other CIDR ranges.

What is my IPv4 and IPv6?

Check your own IP - both IPv4 and IPv6. Works as a connectivity test as well.

GeoIP location

81.45.0.0

World map, day/night + local time

beta

Beautiful day/night map of the world, with markup of all major cities including local date and time.

Result

81.45.0.0/16

Prefix:

81.45.0.0/16 (65.536 IP's - view in CIDR to IP tool)

Description:

Provider Local Registry

Country:

Spain

Announced by:

TELEFONICA DE ESPANA S.A.U.
https://www.telefonica.es/

AS3352, 105 peers, 188 announced prefixes

See all details on AS3352 - TELEFONICA DE ESPANA S.A.U. »

Matching prefixes

Country

ASN

Announced prefix

Description

Size

Spain

AS3352

81.45.0.0/16

Provider Local Registry

65.536

Spain

AS31418

81.45.20.0/24

Movistar Plus Spain

256

Spain

AS31418

81.45.21.0/24

Movistar Plus Spain

256

Spain

AS31418

81.45.22.0/24

Movistar Plus Spain

256

Spain

AS31418

81.45.23.0/24

Movistar Plus Spain

256

Spain

AS6813

81.45.26.0/23

Telefonica Soluciones

512

Spain

AS6813

81.45.156.0/22

Telefonica de Espana SAU

1.024

Log

000	+000	Parse input (Prefix)
000	+000	Search database for '81.45.0.0/16'
006	+006	7 prefixes found
006	+000	Done

ASN database

Related tools

Result

81.45.0.0/16

Matching prefixes

Log

The tools of iamroot.tech

Changelog

Newsletter