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

AS43037, Seznam.cz, a.s.

Last update of data:
29-04-2024 00:51 UTC

ASN:

AS43037 (SEZNAM-CZ)

Country:

CZ - Czech Republic (Europe)

Org.:

Seznam.cz, a.s.
https://www.seznam.cz http://onas.seznam.cz/ @PeeringDB

Stats:

Peers

121

IX'es

3

Prefixes

7

IPv4

3.072

IPv6

7,9E+28

Contact:

Seznam.cz, a.s.
Radlicka 3294/10
15000
Prague 5
CZECH REPUBLIC
CZ

+420234694111

History

Date

Peers

IX'es

Prefixes

IPv4

IPv6

11-03-2024

-1

-

-

-

-

01-04-2024

-1

-

-

-

-

08-04-2024

-2

-

-

-

-

15-04-2024

+1

-

-

-

-

22-04-2024

-1

-

-

-

-

Current

121

3

7

3.072

7,9E+28

- - show more (+15 entries) - -

Peers

Country

Relationship

ASN

Organization

Peers

Prefix'es

Antigua and Barbuda

Upstream

Global Network Management Inc

995

31

Armenia

Upstream

2.157

5

Australia

Peer

1.454

39

Austria

Upstream

A1 Telekom Austria AG

1.349

110

Austria

Upstream

ANEXIA Internetdienstleistungs GmbH

1.359

5

Austria

Upstream

Stadtwerke Feldkirch

1.674

8

Austria

Peer

Innsbrucker Kommunalbetriebe AG

910

6

Austria

Peer

384

11

Austria

Peer

995

68

Austria

Peer

Fonira Telekom GmbH

1.300

14

Austria

Peer

Kabel-TV Lampert GmbH & Co KG

1.424

6

- - show more (+110 entries) - -

Internet eXchange (IX) connections

Country

City

IX name

Port speed

Members

Czech Republic

Prague

200 Gb

7

Czech Republic

Praha 3

400 Gb

203

Germany

Frankfurt am Main

100 Gb

1.057

Announced (uniq) prefixes

Country

ASN

Announced prefix

Description

Size

Czech Republic

SEZNAM - I

512

Czech Republic

Seznam.cz

256

Czech Republic

Seznam.cz

256

Czech Republic

SEZNAM - III

512

Czech Republic

SEZNAM - II

512

Czech Republic

185.66.188.0/22

SEZNAM - III

1.024

Country

ASN

Announced prefix

Description

Size

Czech Republic

Seznam.cz IPv6 route

7,9E+28

Czech Republic

2a02:598:a::/48

Seznam.cz, a.s.

1,2E+24

Log

000	+000	Parse input (ASN)
000	+000	Search database for 'AS43037'
002	+002	1 ASN's found
002	+000	Done
002	+000	Load details of AS43037
011	+009	8 prefixes found
123	+111	121 peers found
128	+006	3 IX members found (5 connections)
131	+002	4 links loaded, 3 verified
135	+004	20 historical items loaded
135	+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.