ASN database

You may find these sub-pages interesting as well:

Related tools

Online tool for advanced DNS lookups (nslookup / DIG-style). By default, it performs recursive queries against authoritative name servers - but custom DNS resolvers are supported too. Includes secondary records for a complete overview and provides a full technical log for debugging and insight.

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 rDNS lookups on IPv4 or IPv6 addresses. Check PTR records to see the hostname behind 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 IPv4 and IPv6 address and analyze your network setup. Includes ISP/ASN lookup, DNS resolver detection, browser and device information, and connectivity diagnostics in a shareable report.

GeoIP lookup tool. Supports lookup of ip's in bulk - and lookups based on domainnames. Includes ASN/ISP data. Based upon the MaxMind database.

World map, day/night + local time

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

Ping / traceroute

Ping tool for testing connectivity to a host, measuring response times, jitter, and packet loss. Global ping works like regular ping - but from multiple sources worldwide, simultaneously. Traceroute maps the full path data takes, showing each hop’s response time, ASN, and geo-info to diagnose network issues.

AS267101, ACB Fibra

ASN:

Last update 8 hours ago
at 2026-11-07 09:16 UTC
Corrections?

AS267101 (17.707.775/0001-02)

Country:

BR - Brazil (South America)

Type:

Network infrastructure provider

Org.:

ACB Fibra

Stats:

Peers

42

IX'es

-

Prefixes

13

Sub
prefixes

7

IPv4

1,792

IPv6

7.9^28

Eyeballs

~33K

Contact:

ACB Fibra
BR

History

Date

Peers

IX'es

Prefixes

Sub prefixes

IPv4

IPv6

2026-10-24

+1

-

-

-

-

-

2026-10-25

-1

-

-

-

-

-

2026-10-25

+1

-

-

-

-

-

2026-11-02

-1

-

-

-

-

-

2026-11-02

+1

-

-

-

-

-

Current

42

-

13

7

1,792

7.9^28

- - show more (+88 entries) - -

Peers

Country

Relationship

ASN

Organization

Peers

Prefixes

Angola

Upstream

2,533

19

Australia

Upstream

GSL Networks Pty LTD

5,749

1,668

Brazil

Upstream

ALGAR TELECOM S/A

752

53

Brazil

Upstream

176

1

Brazil

Upstream

Ncleo de Inf. e Coord. do Ponto BR - NIC.BR

2,204

2

Brazil

Upstream

PROVEDORA CMA INTERNET LTDA

2,357

84

Brazil

Upstream

Life Tecnologia Ltda.

2,047

18

Brazil

Upstream

Une Telecom Ltda

197

174

Brazil

Upstream

Softdados Telecomunicaes

2,252

29

Brazil

Upstream

ACESSOLINE TELECOMUNICACOES LTDA

4,810

254

Brazil

Upstream

FNX Tecnologia LTDA

2,137

22

- - show more (+31 entries) - -

Announced prefixes

Country

ASN

Announced prefix

Description

Count

Brazil

ACB Fibra

1,024

Brazil

• 45.228.32.0/24

ACB Fibra

* 256

Brazil

• 45.228.33.0/24

ACB Fibra

* 256

Brazil

• 45.228.34.0/23

ACB Fibra

* 512

Brazil

• 45.228.34.0/24

ACB Fibra

* 256

Brazil

• 45.228.35.0/24

ACB Fibra

* 256

Brazil

181.192.112.0/24

ACB Fibra

256

Brazil

181.192.113.0/24

ACB Fibra

256

Brazil

181.192.115.0/24

ACB Fibra

256

Country

ASN

Announced prefix

Description

Count

Brazil

ACB Fibra

4.0^28

Brazil

2804:4828:8000::/33

ACB Fibra

4.0^28

Brazil

• 2804:4828:bf00::/40

ACB Fibra

* 3.1^26

Brazil

• 2804:4828:ff00::/40

ACB Fibra

* 3.1^26

Log

000	+000	Parse input (ASN)
000	+000	Search database for 'AS267101'
003	+003	1 ASN's found
003	+000	Done
003	+000	Load details of AS267101
004	+001	Last update of ASN: 2026-11-07 09:16 UTC
013	+008	13 prefixes found
064	+051	42 peers found
066	+002	No matching IX connections found!
319	+253	93 historical items loaded
319	+000	Unable to find any associated ASN's!
319	+000	Done

About

iamroot.tech is a toolbox for sysadmins, developers, and fellow nerds. It’s a personal pet project, coded and maintained alongside my day job as a full-stack developer and systems admin.

Everything is free, with no ads, signups, or credit cards required. The only exception is the monitoring platform, which needs a free account.

Feedback is always appreciated at iamrootdottech@gmail.com - otherwise, sign up for the newsletter, consider a donation, or read more on the About page.

Changelog

Newsletter

Bi-weekly (at most) with updates, changelog and info from the website. Subscribe right here, or read more about the iamroot.tech newsletter.

Subscribe using Google

Subscribe using Microsoft

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 usability purposes. Trademarks property of their respective owners. A privacy policy and terms and conditions is availible if you like.

iamrootdottech@gmail.com
Bundgaard - Løvenørnsgade 35 - 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, twelve.tools .

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 usability purposes. Trademarks property of their respective owners. A privacy policy and terms and conditions is availible if you like.

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, twelve.tools .

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 usability purposes. Trademarks property of their respective owners. A privacy policy and terms and conditions is availible if you like.

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