187.58.128.0/22

AS18881 · TELEFÔNICA BRASIL S.A

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Summary

Country	Brazil
Domain	trtrio.gov.br
ASN	AS18881
Parent Range	187.58.0.0/15
Registry	LACNIC
ID	FAD34

WHOIS Details

inetnum:     187.58.131.192/26
aut-num:     AS18881
abuse-c:     CSTBR
owner:       Tribunal Regional do Trabalho da 1a Região
ownerid:     02.578.421/0001-20
responsible: Dir. da Sec. de Tecnologia da Informação
country:     BR
owner-c:     FAD102
tech-c:      DIINF4
created:     20091230
changed:     20130307
inetnum-up:  187.58.0.0/15

nic-hdl-br:  FAD102
person:      Francisco Assis de Paiva Dreyfuss
e-mail:      francisco.dreyfuss@trt1.jus.br
country:     BR
created:     20010914
changed:     20210430

nic-hdl-br:  CSTBR
person:      CSIRT TELEFONICA BR
e-mail:      abuse.br@telefonica.com
country:     BR
created:     20180713
changed:     20180713

nic-hdl-br:  DIINF4
person:      Diretor de Informatica
e-mail:      sti@trtrio.gov.br
country:     BR
created:     20070731
changed:     20210218

Overlapping Ranges

BGP prefixes that contain 187.58.128.0/22

Range	ASN	Company	Num of IPs
187.58.0.0/15	AS18881	TELEFÔNICA BRASIL S.A	131,072

Nearby Ranges

BGP prefixes that overlap with 187.58.0.0/16

Range	ASN	Company	Num of IPs
187.58.0.0/15	AS18881	TELEFÔNICA BRASIL S.A	131,072

Hosted domains

There are no domains currently hosted on this ASN.

Hosted domains API

Our Hosted Domains API, or Reverse IP API returns a full list of domains that are hosted on a single IP address.

Useful for Cybersecurity

Read more

Pingable IPs

95 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address	ASN	Details
187.58.128.190	AS18881 TELEFÔNICA BRASIL S.A	`2.00ms` from Rio de Janeiro, BR
187.58.131.52	AS18881 TELEFÔNICA BRASIL S.A	`0.81ms` from Rio de Janeiro, BR
187.58.129.182	AS18881 TELEFÔNICA BRASIL S.A	`0.82ms` from Rio de Janeiro, BR

Other Pingable IPs

Below is a random selection of 25 IPs that replied to an ICMP ping during our most recent internet scan.

IP Address	ASN	Details
162.233.212.118	AS7018 AT&T Enterprises, LLC	`12.31ms` from Atlanta, US
35.187.60.118	AS396982 Google LLC	`0.15ms` from Brussels, BE
84.136.94.166	AS3320 Deutsche Telekom AG	`4.65ms` from Frankfurt am Main, DE
8.138.201.118	AS37963 Hangzhou Alibaba Advertising Co.,Ltd.	`0.11ms` from Guangzhou, CN
95.138.14.198	AS21351 Canal + Telecom SAS	`1.26ms` from Le Lamentin, MQ
2.97.7.54	AS13285 TalkTalk Communications Limited	`3.34ms` from London, GB
76.89.86.134	AS20001 Charter Communications Inc	`4.81ms` from Los Angeles, US
12.126.35.182	AS7018 AT&T Enterprises, LLC	`1.16ms` from Los Angeles, US
186.53.30.6	AS6057 Administracion Nacional de Telecomunicaciones	`1.72ms` from Montevideo, UY
72.185.76.102	AS33363 Charter Communications, Inc	`8.96ms` from Orlando, US
201.63.250.86	AS10429 TELEFÔNICA BRASIL S.A	`1.15ms` from Osasco, BR
75.164.133.118	AS209 CenturyLink Communications, LLC	`1.68ms` from Portland, US
44.210.90.166	AS14618 Amazon.com, Inc.	`0.42ms` from Reston, US
77.106.42.70	AS12389 PJSC Rostelecom	`11.01ms` from Saint Petersburg, RU
96.77.211.246	AS7922 Comcast Cable Communications, LLC	`6.77ms` from San Jose, US
125.147.185.118	AS4766 Korea Telecom	`1.71ms` from Seoul, KR
124.74.229.198	AS4812 China Telecom (Group)	`2.70ms` from Shanghai, CN
13.236.89.182	AS16509 Amazon.com, Inc.	`0.14ms` from Sydney, AU
182.122.56.230	AS4837 CHINA UNICOM China169 Backbone	`5.61ms` from Zhengzhou, CN
104.80.195.6	AS20940 Akamai International B.V.	`0.33ms` from London, GB
146.199.31.134	AS6871 Plusnet	`6.04ms` from London, GB
104.177.167.182	AS7018 AT&T Enterprises, LLC	`4.01ms` from Los Angeles, US
81.32.201.166	AS3352 TELEFONICA DE ESPANA S.A.U.	`3.66ms` from Madrid, ES
213.182.73.22	AS21056 Vianova S.p.A	`11.83ms` from Milan, IT
88.43.78.246	AS3269 Telecom Italia S.p.A.	`0.85ms` from Milan, IT

Traceroute

Below is a recent traceroute taken from the IPinfo ProbeNet to an IP in this range. Learn more.

traceroute -a -n -q1 -f3 187.58.128.81

traceroute to 187.58.128.81 (187.58.128.81): 64 hops max, 52 byte packets

3 [] 152.255.169.8 0.975 ms

4 *

5 *

6 [AS18881] 187.58.128.81 2.838 ms

Measurement taken from

IPinfo ProbeNet in Rio de Janeiro, BR

On January 18th 2026

What are IP address ranges?

IP address ranges, or netblocks, are groups of related IP addresses. They are usually represented as a base IP address, followed by a slash, and then a netmask which represents how many IP addresses are contained within the netblock. This format is known as CIDR. You'll also sometimes see netblocks given as a start ip address, and an end ip address, or an ip address range.

Traffic works its way around the internet based on the routing table, which contains a list of networks and their associated netblocks.

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