187.58.128.0/22

AS18881 · TELEFÔNICA BRASIL S.A

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Summary

Country	Brazil
Domain	trt1.jus.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:      [email protected]
country:     BR
created:     20010914
changed:     20210430

nic-hdl-br:  CSTBR
person:      CSIRT TELEFONICA BR
e-mail:      [email protected]
country:     BR
created:     20180713
changed:     20180713

nic-hdl-br:  DIINF4
person:      Diretor de Informatica
e-mail:      [email protected]
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

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

IP Address	ASN	Details
187.58.129.213	AS18881 TELEFÔNICA BRASIL S.A	`0.79ms` from Rio de Janeiro, BR
187.58.131.52	AS18881 TELEFÔNICA BRASIL S.A	`0.80ms` from Rio de Janeiro, BR
187.58.128.186	AS18881 TELEFÔNICA BRASIL S.A	`1.96ms` 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
221.223.15.166	AS4808 China Unicom Beijing Province Network	`3.99ms` from Beijing, CN
74.249.81.86	AS8075 Microsoft Corporation	`0.32ms` from Boydton, US
82.76.237.150	AS8708 DIGI ROMANIA S.A.	`1.94ms` from Bucharest, RO
172.125.39.134	AS7018 AT&T Enterprises, LLC	`3.89ms` from Chicago, US
96.84.99.166	AS7922 Comcast Cable Communications, LLC	`4.99ms` from Chicago, US
99.87.223.166	AS7018 AT&T Enterprises, LLC	`3.43ms` from Dallas, US
96.91.65.118	AS7922 Comcast Cable Communications, LLC	`9.85ms` from Dallas, US
217.224.145.214	AS3320 Deutsche Telekom AG	`8.88ms` from Frankfurt am Main, DE
5.81.229.150	AS2856 British Telecommunications PLC	`2.30ms` from London, GB
176.175.134.150	AS5410 Bouygues Telecom SA	`4.87ms` from Lyon, FR
51.92.179.118	AS16509 Amazon.com, Inc.	`5.63ms` from Madrid, ES
73.29.179.134	AS7922 Comcast Cable Communications, LLC	`8.78ms` from Morris Plains, US
40.183.162.70	AS9009 M247 Europe SRL	`0.25ms` from New York City, US
124.96.144.166	AS4713 NTT DOCOMO BUSINESS,Inc.	`3.90ms` from Osaka, JP
2.236.87.70	AS12874 Fastweb SpA	`4.10ms` from Rome, IT
167.250.250.198	AS265220 polixnet telecomunicacoes ltda	`8.90ms` from Sao Paulo, BR
124.56.72.38	AS17858 LG POWERCOMM	`1.90ms` from Seoul, KR
1.215.100.214	AS3786 LG DACOM Corporation	`1.93ms` from Seoul, KR
211.117.246.6	AS9318 SK Broadband Co Ltd	`1.80ms` from Seoul, KR
172.104.63.246	AS63949 Akamai Connected Cloud	`0.12ms` from Singapore, SG
31.201.26.182	AS50266 Odido Netherlands B.V.	`4.12ms` from Amsterdam, NL
52.33.20.230	AS16509 Amazon.com, Inc.	`0.13ms` from Boardman, US
37.191.34.198	AS21334 One Hungary Ltd.	`13.11ms` from Budapest, HU
182.139.158.6	AS4134 CHINANET-BACKBONE	`1.52ms` from Chengdu, CN
12.252.201.150	AS7018 AT&T Enterprises, LLC	`5.94ms` from Columbus, US

Traceroute

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

traceroute -a -n -q1 -f3 187.58.131.5

traceroute to 187.58.131.5 (187.58.131.5): 64 hops max, 52 byte packets

3 [] 152.255.169.8 0.602 ms

4 *

5 *

6 [AS18881] 187.58.131.5 1.601 ms

Measurement taken from

IPinfo ProbeNet in Rio de Janeiro, BR

On December 14th 2025

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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