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

Perform WHOIS and/or RDAP lookups on domains, IP addresses, and ASNs. Will output all available technical info, contact info, etc.

Perform reverse DNS (rDNS/PTR) lookups of any IP.

CIDR calculator

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.

Online tool GeoIP location of any IP and/or domain.

World map, day/night + local time

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

Result

AS35228, Telefonica UK Limited

Last update of data:
02-05-2024 04:41 UTC

ASN:

AS35228 (O2BROADBAND)

Country:

GB - Britain (UK) (Europe)

Org.:

Telefonica UK Limited
https://www.o2.co.uk/abouto2/company-details https://www.telefonica.com @PeeringDB
Social media: @facebook @twitter/X @instagram

Stats:

Peers

91

IX'es

2

Prefixes

10

IPv4

+215K

IPv6

-

Contact:

Telefonica UK Limited
500 Brook Drive
RG2 6UU
Reading
UNITED KINGDOM
GB

+442074795000

History

Date

Peers

IX'es

Prefixes

IPv4

IPv6

04-04-2024

+1

-

-

-

-

11-04-2024

-1

-

-

-

-

18-04-2024

-3

-

-

-

-

25-04-2024

+1

-

-

-

-

02-05-2024

-1

-

-

-

-

Current

91

2

10

+215K

-

- - show more (+15 entries) - -

Peers

Country

Relationship

ASN

Organization

Peers

Prefix'es

Armenia

Upstream

2.157

5

Australia

Upstream

Australian Academic and Research Network

1.225

149

Austria

Upstream

Stadtwerke Feldkirch

1.674

8

Austria

Peer

ANEXIA Internetdienstleistungs GmbH

2.763

385

Brazil

Upstream

ALOO TELECOM - FSF TECNOLOGIA SA

2.152

12

Brazil

Peer

BR.Digital Provider

5.844

89

Brazil

Peer

3.195

6

Brazil

Peer

LINK BRASIL TELECOMUNICACOES LTDA

5.001

18

Britain (UK)

Upstream

2.344

18

Britain (UK)

Upstream

COLT Technology Services Group Limited

1.859

174

Britain (UK)

Upstream

London Internet Exchange Ltd.

235

-

- - show more (+80 entries) - -

Internet eXchange (IX) connections

Country

City

IX name

Port speed

Members

Britain (UK)

London

600 Gb

829

Britain (UK)

London

200 Gb

316

Announced (uniq) prefixes

Country

ASN

Announced prefix

Description

Size

Britain (UK)

O2 WiFi IPv4 Space

16.384

Britain (UK)

82.132.128.0/17

O2 Online (UK)

32.768

Britain (UK)

Aggregate

65.536

Britain (UK)

Aggregate

65.536

Britain (UK)

Telefonica UK Limited

32.768

Britain (UK)

158.230.200.0/22

Telefonica UK Limited

1.024

Britain (UK)

185.79.104.0/23

Argos Limited

512

Britain (UK)

185.79.106.0/23

Argos Limited

512

Britain (UK)

185.132.84.0/24

Telefonica UK Limited

256

Britain (UK)

185.132.85.0/24

Telefonica UK Limited

256

Log

000	+000	Parse input (ASN)
000	+000	Search database for 'AS35228'
003	+002	1 ASN's found
003	+000	Done
003	+000	Load details of AS35228
038	+035	10 prefixes found
143	+105	91 peers found
151	+008	2 IX members found (4 connections)
154	+003	6 links loaded, 6 verified
158	+004	20 historical items loaded
158	+000	Done

Changelog

Newsletter

Bi-weekly (at most) with updates, changelog and info from the website. Just straight to the point info - no BS! Sign up right here, or read more about the iamroot.tech newsletter.

Signup using Google

Signup using Github

Other options: Signup using Microsoft or Signup using Facebook.

OR

No personal information gathered anywhere. E-mail may be used for login and/or newsletter - will not be sold or used by anyone else but iamroot.tech. Cookies are in use for statistical and useability purposes. Trademarks property of their respective owners. A privacy policy and terms and conditions is availible if you like.

iamrootdottech@gmail.com
Bundgaard - Løvenørnsgade 56, 2tv - DK-8700 Horsens - Denmark

Shoutouts and credits to: Bootstrap, jQuery, Bootstrap live customizer by Virtuosoft, DnsClient.NET by MichaCo, LazyLoad by Mika Tuupola, the Olson tz database by IANA, Visible earth by NASA, GeoLite2 by MaxMind, Barcoder by Wouter Huysentruit, ICONS8.
json-viewer by alenaksu.

iamrootdottech@gmail.com
Bundgaard - Løvenørnsgade 56, 2tv - DK-8700 Horsens - Denmark

No personal information gathered anywhere. E-mail may be used for login and/or newsletter - will not be sold or used by anyone else but iamroot.tech. Cookies are in use for statistical and useability purposes. Trademarks property of their respective owners. A privacy policy and terms and conditions is availible if you like.