191.37.73.0/24

AS263356 · CNT Fiber

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Summary

Country	Brazil
Domain	cntfiber.net.br
ASN	AS263356
Parent Range	191.37.72.0/21
Registry	LACNIC
ID	ASA90

WHOIS Details

inetnum:     191.37.72.0/21
aut-num:     AS263356
abuse-c:     CNILT14
owner:       CNT Fiber
ownerid:     08.892.029/0001-37
responsible: Amarildo Souza Arruda
owner-c:     CNILT14
tech-c:      CNILT14
inetrev:     191.37.72.0/21
nserver:     ns1.udns.com.br
nsstat:      20211218 AA
nslastaa:    20211218
nserver:     ns2.udns.com.br
nsstat:      20211218 AA
nslastaa:    20211218
nserver:     ns3.udns.com.br
nsstat:      20211218 AA
nslastaa:    20211218
nserver:     ns4.udns.com.br
nsstat:      20211218 AA
nslastaa:    20211218
nserver:     ns5.udns.com.br
nsstat:      20211218 AA
nslastaa:    20211218
created:     20140318
changed:     20140318

nic-hdl-br:  CNILT14
person:      Conecta Net Informatica Ltda
created:     20111006
changed:     20190311

Overlapping Ranges

BGP prefixes that contain 191.37.73.0/24

Range	ASN	Company	Num of IPs
191.37.72.0/21	AS263356	CNT Fiber	2,048

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
191.37.12.0/22	AS263350	rocha e portes ltda	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

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Useful for Cybersecurity

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Pingable IPs

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

IP Address	ASN	Details
191.37.73.255	AS263356 CNT Fiber	`9.85ms` 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
79.244.3.184	AS3320 Deutsche Telekom AG	`7.69ms` from Frankfurt am Main, DE
37.133.189.136	AS12479 Orange Espagne SA	`7.81ms` from Madrid, ES
46.61.203.200	AS12389 PJSC Rostelecom	`5.79ms` from Moscow, RU
123.221.42.24	AS4713 NTT DOCOMO BUSINESS,Inc.	`5.29ms` from Osaka, JP
122.248.72.88	AS7522 STNet, Incorporated	`4.29ms` from Osaka, JP
121.157.154.88	AS4766 Korea Telecom	`4.24ms` from Seoul, KR
119.102.189.40	AS4134 CHINANET-BACKBONE	`3.70ms` from Wuhan, CN
44.194.1.56	AS14618 Amazon.com, Inc.	`0.54ms` from Ashburn, US
5.161.56.88	AS213230 Hetzner Online GmbH	`0.21ms` from Ashburn, US
159.112.251.168	AS396479 Mailgun Technologies Inc.	`1.00ms` from Ashburn, US
81.60.20.24	AS12430 VODAFONE ESPANA S.A.U.	`19.23ms` from Barcelona, ES
181.235.252.232	AS3816 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC	`7.47ms` from Bogota, CO
13.71.214.152	AS8075 Microsoft Corporation	`3.43ms` from Denver, US
47.57.105.216	AS45102 Alibaba (US) Technology Co., Ltd.	`1.29ms` from Hong Kong, HK
203.176.205.136	AS9269 Hong Kong Broadband Network Ltd.	`1.02ms` from Hong Kong, HK
49.64.171.136	AS4134 CHINANET-BACKBONE	`5.46ms` from Nanjing, CN
72.227.178.8	AS12271 Charter Communications Inc	`3.42ms` from New York City, US
112.245.145.168	AS4837 CHINA UNICOM China169 Backbone	`5.34ms` from Qingdao, CN
73.65.176.136	AS7922 Comcast Cable Communications, LLC	`6.09ms` from Salt Lake City, US
96.184.79.216	AS393232 Comcast Cable Communications, LLC	`0.35ms` from Secaucus, US
49.235.184.152	AS45090 Shenzhen Tencent Computer Systems Company Limited	`0.77ms` from Shanghai, CN
116.250.237.72	AS24033 Australian Private Networks Pty Ltd	`12.83ms` from Sydney, AU
123.51.202.184	AS9919 New Century InfoComm Tech Co., Ltd.	`1.06ms` from Taipei, TW
153.134.140.88	AS4713 NTT DOCOMO BUSINESS,Inc.	`3.44ms` from Tokyo, JP
68.82.67.8	AS7922 Comcast Cable Communications, LLC	`8.41ms` from Ashburn, US

Traceroute

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

traceroute -a -n -q1 -f6 191.37.73.255

traceroute to 191.37.73.255 (191.37.73.255): 64 hops max, 52 byte packets

6 [AS16509] 99.83.115.134 11.848 ms

7 [AS16509] 99.83.115.135 11.427 ms

8 [AS23106] 200.150.1.169 11.252 ms

9 [AS23106] 186.248.107.150 10.459 ms

10 *

11 [AS263356] 191.37.73.255 9.961 ms

Measurement taken from

IPinfo ProbeNet in Osasco, BR

On December 29th 2025

What are IP address ranges?

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