187.121.226.0/24

AS266356 · PRONTO FIBRA LTDA

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Summary

Country	Brazil
Domain	prontofibra.com.br
ASN	AS266356
Parent Range	187.121.224.0/21
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

Overlapping Ranges

BGP prefixes that contain 187.121.226.0/24

Range	ASN	Company	Num of IPs
187.121.224.0/21	AS266356	PRONTO FIBRA LTDA	2,048

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
187.121.224.0/21	AS266356	PRONTO FIBRA 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 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

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Pingable IPs

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

IP Address	ASN	Details
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
38.81.95.184	AS31919 Blue Ridge Mountain Electric Membership Corporation - BRM EMC	`3.68ms` from Atlanta, US
93.233.63.24	AS3320 Deutsche Telekom AG	`6.64ms` from Frankfurt am Main, DE
123.21.208.56	AS45899 VNPT Corp	`1.42ms` from Ho Chi Minh City, VN
78.130.96.24	AS2860 NOS COMUNICACOES, S.A.	`13.51ms` from Lisbon, PT
157.175.177.104	AS16509 Amazon.com, Inc.	`0.35ms` from Manama, BH
43.204.68.88	AS16509 Amazon.com, Inc.	`0.15ms` from Mumbai, IN
108.24.97.104	AS701 Verizon Business	`3.48ms` from New York City, US
100.34.184.200	AS701 Verizon Business	`1.96ms` from Philadelphia, US
188.175.84.216	AS16246 O2 Czech Republic, a.s.	`4.78ms` from Prague, CZ
2.236.102.88	AS12874 Fastweb SpA	`3.95ms` from Rome, IT
34.124.216.24	AS396982 Google LLC	`0.14ms` from Singapore, SG
163.5.51.184	AS53356 Free Range Cloud Hosting Inc.	`0.21ms` from Toronto, CA
139.39.188.72	AS5972 United States Department of Defense (DoD)	`4.78ms` from Ashburn, US
69.149.17.8	AS7018 AT&T Enterprises, LLC	`3.06ms` from Atlanta, US
51.8.136.8	AS8075 Microsoft Corporation	`0.24ms` from Boydton, US
190.77.38.88	AS8048 CANTV Servicios, Venezuela	`12.03ms` from Caracas, VE
105.159.153.56	AS36903 Office National des Postes et Telecommunications ONPT (Maroc Telecom) / IAM	`2.07ms` from Casablanca, MA
189.162.64.88	AS8151 UNINET	`4.22ms` from Guadalajara, MX
113.183.111.216	AS45899 VNPT Corp	`3.44ms` from Hanoi, VN
2.116.197.88	AS3269 Telecom Italia S.p.A.	`3.35ms` from Milan, IT
65.128.76.24	AS209 CenturyLink Communications, LLC	`1.37ms` from Minneapolis, US
142.252.106.248	AS62240 Clouvider	`0.76ms` from New York City, US
76.103.33.56	AS7922 Comcast Cable Communications, LLC	`4.87ms` from San Jose, US
112.181.222.88	AS4766 Korea Telecom	`1.71ms` from Seoul, KR
84.254.57.248	AS25472 Nova Telecommunications & Media Single Member S.A	`5.37ms` from Sofia, BG

Traceroute

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

traceroute -a -n -q1 -f4 187.121.226.7

traceroute to 187.121.226.7 (187.121.226.7): 64 hops max, 52 byte packets

4 [AS199524] 80.240.124.89 0.749 ms

5 *

6 *

7 *

8 [AS266356] 187.121.226.7 20.174 ms

Measurement taken from

IPinfo ProbeNet in Fortaleza, BR

On February 7th 2026

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