187.121.224.0/21

AS266356 · PRONTO FIBRA LTDA

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Summary

Country	Brazil
Domain	prontofibra.com.br
ASN	AS266356
Registry	LACNIC
ID	HFS7

WHOIS Details

% Copyright (c) Nic.br - Use of this data is governed by the Use and

inetnum:     187.121.224.0/21
aut-num:     AS266356
abuse-c:     PRFIB
owner:       PRONTO FIBRA LTDA
ownerid:     24.404.615/0001-41
responsible: Helio Ferraz da Silva
owner-c:     HEFSL2
tech-c:      HEFSL2
inetrev:     187.121.224.0/21
nserver:     ns1.prontofibra.com.br
nsstat:      20260209 AA
nslastaa:    20260209
nserver:     ns2.prontofibra.com.br
nsstat:      20260209 AA
nslastaa:    20260209
created:     20100308
changed:     20241216

nic-hdl-br:  HEFSL2
person:      HELIO FERRAZ DA SLVA
created:     20160507
changed:     20240712

nic-hdl-br:  PRFIB
person:      Pronto Fibra
created:     20170807
changed:     20190703

Nearby Ranges

BGP prefixes that overlap with 187.121.0.0/16

Range	ASN	Company	Num of IPs
187.121.0.0/17	AS19182	TELEFÔNICA BRASIL S.A	32,768
187.121.192.0/19	AS28667	VERO S.A	8,192
187.121.160.0/20	AS270814	ZAAZ PROVEDOR DE INTERNET E TELECOMUNICACOES LTDA	4,096
187.121.176.0/20	AS28343	UNIFIQUE TELECOMUNICACOES S/A	4,096
187.121.144.0/21	AS273683	ALLREDE TELECOM LTDA	2,048
187.121.232.0/22	AS264119	UBA CONECT TELECOM LTDA - ME	1,024
187.121.156.0/22	AS270918	INSIDE TECNOLOGIA E SERVIÇOS LTDA	1,024
187.121.152.0/22	AS270921	CROSS CONNECT PROVEDOR	1,024
187.121.236.0/22	AS265369	C-ComTelecom Servios Ltda-ME	1,024

Hosted domains

There are 2 domain names hosted across 2 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
187.121.224.144	labsnet.com.br	1
187.121.224.255	temove.net	1

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

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Pingable IPs

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

IP Address	ASN	Details
187.121.224.201	AS266356 PRONTO FIBRA LTDA	`12.20ms` from Brasilia, BR
187.121.225.3	AS266356 PRONTO FIBRA LTDA	`19.32ms` from Fortaleza, BR
187.121.226.7	AS266356 PRONTO FIBRA LTDA	`19.70ms` from Fortaleza, 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
80.113.210.5	AS33915 Vodafone Libertel B.V.	`4.45ms` from Amsterdam, NL
131.108.13.101	AS28343 UNIFIQUE TELECOMUNICACOES S/A	`6.47ms` from Chapeco, BR
71.81.101.5	AS20115 Charter Communications LLC	`6.56ms` from Chicago, US
93.224.216.165	AS3320 Deutsche Telekom AG	`4.83ms` from Frankfurt am Main, DE
178.151.24.85	AS13188 CONTENT DELIVERY NETWORK LTD	`0.56ms` from Kyiv, UA
83.32.41.37	AS3352 TELEFONICA DE ESPANA S.A.U.	`1.11ms` from Madrid, ES
98.118.180.117	AS701 Verizon Business	`9.54ms` from New York City, US
69.253.31.165	AS7922 Comcast Cable Communications, LLC	`10.46ms` from New York City, US
47.16.34.181	AS6128 Cablevision Systems Corp.	`4.13ms` from Piscataway, US
138.219.150.21	AS262817 CARDOSONET INTERNET E SERVIÇOS DE INFORMÁTICA LTDA	`5.34ms` from Rio de Janeiro, BR
96.74.94.149	AS7922 Comcast Cable Communications, LLC	`5.83ms` from San Jose, US
93.172.208.85	AS1680 Cellcom Fixed Line Communication L.P	`4.60ms` from Tel Aviv, IL
125.103.134.101	AS17506 ARTERIA Networks Corporation	`0.60ms` from Tokyo, JP
27.131.181.229	AS24187 KIRZ Service Provider	`0.62ms` from Bangkok, TH
190.144.110.229	AS14080 Telmex Colombia S.A.	`0.96ms` from Bogota, CO
73.203.218.229	AS7922 Comcast Cable Communications, LLC	`10.09ms` from Dallas, US
13.33.156.181	AS16509 Amazon.com, Inc.	`0.13ms` from Hong Kong, HK
139.150.90.149	AS3786 LG DACOM Corporation	`0.99ms` from Incheon, KR
58.56.70.149	AS4134 CHINANET-BACKBONE	`4.83ms` from Jinan, CN
217.61.90.5	AS200845 AVATEL TELECOM, SA	`8.54ms` from Madrid, ES
121.221.195.101	AS1221 Telstra Limited	`10.79ms` from Melbourne, AU
93.56.60.149	AS12874 Fastweb SpA	`0.86ms` from Milan, IT
189.109.75.165	AS10429 TELEFÔNICA BRASIL S.A	`0.81ms` from Osasco, BR
92.175.210.181	AS3215 Orange S.A.	`4.92ms` from Paris, FR
92.162.140.69	AS3215 Orange S.A.	`12.18ms` from Paris, FR

Traceroute

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

traceroute -a -n -q1 -f3 187.121.224.177

traceroute to 187.121.224.177 (187.121.224.177): 64 hops max, 52 byte packets

3 [] 45.184.144.190 16.881 ms

4 *

5 *

6 [AS266356] 187.121.224.177 13.635 ms

Measurement taken from

IPinfo ProbeNet in Brasília, BR

On February 7th 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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