191.37.12.0/22

AS263350 · rocha e portes ltda

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Summary

Country	Brazil
Domain	alfatechtelecom.com.br
ASN	AS263350
Registry	LACNIC
ID	JWP2

WHOIS Details

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

inetnum:     191.37.12.0/22
aut-num:     AS263350
abuse-c:     JWPPO
owner:       rocha e portes ltda
ownerid:     04.343.747/0001-01
responsible: jose wilson portugal portes
country:     BR
owner-c:     JWPPO
tech-c:      JWPPO
inetrev:     191.37.12.0/22
nserver:     server.alfatechinfo.com.br
nsstat:      20250927 AA
nslastaa:    20250927
nserver:     server2.alfatechinfo.com.br
nsstat:      20250927 AA
nslastaa:    20250927
created:     20140317
changed:     20140317

nic-hdl-br:  JWPPO
person:      Jose wilson portugal portes
e-mail:      [email protected]
country:     BR
created:     20060921
changed:     20250917

Nearby Ranges

BGP prefixes that overlap with 191.37.0.0/16

Range	ASN	Company	Num of IPs
191.37.32.0/19	AS263347	CEDNET PROVEDOR INTERNET	8,192
191.37.96.0/19	AS263357	Hot Wave Comercio e Servico de Telecomunicacoes Lt	8,192
191.37.176.0/21	AS263369	Almeida & Moura Ltda	2,048
191.37.200.0/21	AS263371	Intervia Solucoes Ltda	2,048
191.37.208.0/21	AS263372	RODRIGUES & SARMENTO LTDA	2,048
191.37.224.0/21	AS263374	YZO TELECOM TECNOLOGIA EIRELI - ME	2,048
191.37.232.0/21	AS263375	INFO CENTER INFORMÁTICA LTDA	2,048
191.37.184.0/21	AS61904	POLLYNET TELECOM EIRELI	2,048
191.37.16.0/21	AS263349	RapeedoISP LTDA	2,048
191.37.88.0/21	AS61588	DIGITAL PROVEDOR DE ACESSO A INTERNET LTDA	2,048
191.37.216.0/21	AS273309	UNI TELECOM LTDA	2,048
191.37.144.0/21	AS268323	AZZA TELECOM SERVIÇOS EM TELECOMUNICAÇÕES LTDA	2,048
191.37.72.0/21	AS263356	CNT Fiber	2,048
191.37.128.0/21	AS263359	CyberTech Informática Ltda.	2,048
191.37.152.0/21	AS263362	REDE SPEEDNET TELECOM LTDA	2,048
191.37.240.0/21	AS262481	VERO S.A	2,048
191.37.160.0/21	AS263363	RADLINK TELECOMUNICACOES LTDA	2,048
191.37.136.0/22	AS263360	BR MASTER PROVEDOR DE INTERNET LTDA	1,024
191.37.248.0/22	AS262481	VERO S.A	1,024
191.37.8.0/22	AS263348	DESEMPENHO PROVEDOR DE INTERNET	1,024
191.37.28.0/22	AS263352	WRNET LTDA	1,024
191.37.64.0/22	AS263353	YARA DOS SANTOS BARREIRO - ME	1,024
191.37.68.0/22	AS263355	GTR NET COMUNICACOES EIRELI	1,024
191.37.196.0/22	AS263404	TELECOM FOZ	1,024
191.37.140.0/22	AS266387	World Fast Telecomunicacoes ME	1,024
191.37.84.0/22	AS270973	ZERBINATTI & SANTOS MULTIMIDIA LTDA	1,024
191.37.168.0/22	AS271023	TERA SOLUCOES	1,024
191.37.172.0/22	AS28343	Unifique Telecomunicações SA	1,024
191.37.4.0/23	AS263346	Fonte Informatica ltda	512
191.37.2.0/23	AS263980	G3 Telecom EIRELI	512
191.37.0.0/23	AS263346	Fonte Informatica ltda	512
191.37.82.0/24	AS270972	4L FIBRA TELECOM EIRELI	256
191.37.83.0/24	AS270972	Mega Power Provedor De Internet Ltda - M	256
191.37.255.0/24	AS263257	Unimed Regional Maringá	256
191.37.230.0/24	AS263374	IDEZ TELECOM	256
191.37.254.0/24	AS263273	INST. FED. DE EDUCACAO CIENCIA E TECNO FLUMINENSE	256
191.37.253.0/24	AS263417	UNIVERSIDADE CATOLICA DOM BOSCO	256
191.37.7.0/24	AS263980	G3 Telecom EIRELI	256
191.37.6.0/24	AS263980	G3 Telecom EIRELI	256
191.37.252.0/24	AS270050	OPTIMIZA SEGURIDAD SpA	256
191.37.80.0/24	AS270972	Ponto a Ponto Telecomunicaçoes	256

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

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

IP Address	ASN	Details
191.37.13.253	AS263350 rocha e portes ltda	`11.09ms` from Osasco, BR
191.37.14.235	AS263350 rocha e portes ltda	`11.07ms` from Osasco, BR
191.37.12.29	AS263350 rocha e portes ltda	`11.07ms` from Osasco, 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
129.80.9.134	AS31898 Oracle Corporation	`0.30ms` from Ashburn, US
47.227.235.198	AS33363 Charter Communications, Inc	`8.06ms` from Chicago, US
73.72.159.118	AS7922 Comcast Cable Communications, LLC	`4.73ms` from Chicago, US
202.123.29.198	AS23889 Mauritius Telecom Ltd	`1.74ms` from Ebene, MU
221.126.171.134	AS9304 HGC Global Communications Limited	`1.88ms` from Hong Kong, HK
136.32.68.246	AS16591 Google Fiber Inc.	`0.76ms` from Kansas City, US
75.83.21.118	AS20001 Charter Communications Inc	`3.13ms` from Los Angeles, US
104.229.187.102	AS11351 Charter Communications Inc	`11.28ms` from New York City, US
104.181.131.166	AS7018 AT&T Enterprises, LLC	`4.38ms` from San Antonio, US
13.209.20.230	AS16509 Amazon.com, Inc.	`0.23ms` from Seoul, KR
1.221.99.166	AS3786 LG DACOM Corporation	`1.70ms` from Seoul, KR
125.151.71.70	AS4766 Korea Telecom	`1.78ms` from Seoul, KR
117.72.91.22	AS141679 China Telecom Beijing Tianjin Hebei Big Data Industry Park Branch	`0.27ms` from Tianjin, CN
98.86.11.102	AS14618 Amazon.com, Inc.	`0.57ms` from Ashburn, US
108.210.173.6	AS7018 AT&T Enterprises, LLC	`13.43ms` from Atlanta, US
219.142.194.102	AS4847 China Networks Inter-Exchange	`4.36ms` from Beijing, CN
120.46.139.22	AS55990 Huawei Cloud Service data center	`3.62ms` from Beijing, CN
42.193.18.54	AS45090 Shenzhen Tencent Computer Systems Company Limited	`0.78ms` from Chengdu, CN
12.119.81.70	AS7018 AT&T Enterprises, LLC	`2.45ms` from Chicago, US
201.153.229.134	AS8151 UNINET	`11.88ms` from Santiago de Queretaro, MX
36.39.197.70	AS17577 LG HelloVision Corp.	`5.01ms` from Seoul, KR
121.142.66.38	AS4766 Korea Telecom	`1.62ms` from Seoul, KR
120.142.55.70	AS7562 HCN Dongjak	`0.84ms` from Seoul, KR
179.130.136.22	AS26599 TELEFÔNICA BRASIL S.A	`3.79ms` from São Paulo, BR
161.78.10.38	AS3303 Swisscom (Switzerland) Ltd	`2.16ms` from Zuerich, CH

Traceroute

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

traceroute -a -n -q1 191.37.12.29

traceroute to 191.37.12.29 (191.37.12.29): 64 hops max, 52 byte packets

1 [AS15169] 108.170.228.30 114.215 ms

2 *

3 *

4 [AS263350] 191.37.12.29 127.706 ms

Measurement taken from

IPinfo ProbeNet in Ashburn, US

On December 28th 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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