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

AS51800, FIBER Network s.r.o.

Last update of data:
11-04-2024 20:14 UTC

ASN:

AS51800 (FIBERNET-ASN)

Country:

CZ - Czech Republic (Europe)

Org.:

FIBER Network s.r.o.
http://www.fiber.cz

Stats:

Peers

20

IX'es

1

Prefixes

2

IPv4

2.048

IPv6

7,9E+28

Contact:

FIBER Network s.r.o.
Cimburkova 369/16
130 00
Prague 3
CZECH REPUBLIC
CZ

+420222742742

History

Date

Peers

IX'es

Prefixes

IPv4

IPv6

Before 18-01-2024

21

1

2

2.048

7,9E+28

18-01-2024

-3

-

-

-

-

15-02-2024

-4

-

-

-

-

14-03-2024

+4

-

-

-

-

11-04-2024

+2

-

-

-

-

Current

20

1

2

2.048

7,9E+28

Peers

Country

Relationship

ASN

Organization

Peers

Prefix'es

Austria

Upstream

Next Layer Telekommunikationsdienstleistungs- und Beratungs GmbH

967

80

Austria

Peer

384

11

Azerbaijan

Peer

Delta Telecom Ltd

2.925

182

Brazil

Peer

BR.Digital Provider

5.844

89

Britain (UK)

Upstream

2.354

18

Britain (UK)

Peer

LEVEL EIGHTY-SIX COMMUNICATIONS LTD

3.274

30

Czech Republic

Upstream

CESNET z.s.p.o.

222

21

Czech Republic

Upstream

96

5

Czech Republic

Peer

NIX.CZ z.s.p.o.

205

5

Czech Republic

Peer

Freenet Liberec, z.s.

287

2

Czech Republic

Downstream

SPOJE.NET s.r.o.

3

2

Czech Republic

Downstream

Computer Systems Consulting s.r.o.

2

2

France

Upstream

Zayo Infrastructure France SA

1.864

25

Germany

Peer

Inter.link GmbH

1.966

5

Italy

Peer

MainStreaming SpA

4.218

30

Netherlands

Peer

Bart Vrancken trading as MLaB

3.005

5

Netherlands

Peer

6.510

134

Singapore

Upstream

8.488

17

United States

Upstream

Hurricane Electric LLC

10.632

262

United States

Peer

NetActuate, Inc

7.343

206

Internet eXchange (IX) connections

Country

City

IX name

Port speed

Members

Czech Republic

Praha 3

2 Gb

203

Announced (uniq) prefixes

Country

ASN

Announced prefix

Description

Size

Czech Republic

FIBER Networks customers

2.048

Country

ASN

Announced prefix

Description

Size

Czech Republic

FBN primary ipv6 pool

7,9E+28

Log

000	+000	Parse input (ASN)
000	+000	Search database for 'AS51800'
002	+002	1 ASN's found
002	+000	Done
002	+000	Load details of AS51800
012	+010	2 prefixes found
030	+018	20 peers found
033	+003	1 IX members found (1 connections)
035	+002	4 links loaded, 1 verified
037	+002	5 historical items loaded
037	+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.