187.73.128.0/21

AS28576 · ITIBR - Instituto de Tecnologia Informacao Brasil

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Summary

Country	Brazil
Domain	ctitech.net.br
ASN	AS28576
Registry	LACNIC
ID	EDP27

WHOIS Details

inetnum:     187.73.128.0/20
aut-num:     AS28576
abuse-c:     GRSDU7
owner:       ITIBR - Instituto de Tecnologia Informacao Brasil
ownerid:     01.915.785/0001-95
responsible: Eduardo Fumes Parajo
country:     BR
owner-c:     EDP4
tech-c:      EDP4
inetrev:     187.73.128.0/22
nserver:     dns1.ctitech.net.br
nsstat:      20230131 AA
nslastaa:    20230131
nserver:     dns2.ctitech.net.br
nsstat:      20230131 AA
nslastaa:    20230131
inetrev:     187.73.132.0/24
nserver:     dns1.ctitech.net.br
nsstat:      20230131 AA
nslastaa:    20230131
nserver:     dns2.ctitech.net.br
nsstat:      20230131 AA
nslastaa:    20230131
created:     20090720
changed:     20130307

nic-hdl-br:  EDP4
person:      Eduardo Parajo
e-mail:      eduardop@durand.com.br
country:     BR
created:     19980105
changed:     20211213

nic-hdl-br:  GRSDU7
person:      Grupo de Seguran�a Durand
e-mail:      abuse@durand.com.br
country:     BR
created:     20220319
changed:     20220319

Overlapping Ranges

BGP prefixes that are contained by 187.73.128.0/21

Range	ASN	Company	Num of IPs
187.73.130.0/24	AS28576	CTINET SOLUCOES EM CONECTIVIDADE E INFORMATICA LTD	256
187.73.132.0/24	AS28576	CTINET SOLUCOES EM CONECTIVIDADE E INFORMATICA LTD	256

Nearby Ranges

BGP prefixes that overlap with 187.73.0.0/16

Range	ASN	Company	Num of IPs
187.73.64.0/19	AS262673	VERO S.A	8,192
187.73.240.0/20	AS262669	Companhia Itabirana Telecomunicações Ltda	4,096
187.73.16.0/20	AS262671	VERO S.A	4,096
187.73.224.0/20	AS262676	Intervip Networks Ltda.	4,096
187.73.112.0/20	AS263621	JMALUCELLI SERVICOS DE TECNOLOGIA LTDA	4,096
187.73.144.0/20	AS268976	Weclix Telecom S/A	4,096
187.73.48.0/20	AS262668	Mar Provedor de Internet Ltda	4,096
187.73.192.0/20	AS28220	Alares Cabo Servicos de Telecomunicacoes S.A.	4,096
187.73.208.0/20	AS28220	Alares Cabo Servicos de Telecomunicacoes S.A.	4,096
187.73.160.0/20	AS28654	Axtelecom Ltda	4,096
187.73.96.0/20	AS53048	CELANTE SERVICOS DE TELECOMUNICACOES LTDA - EPP	4,096
187.73.0.0/20	AS28201	Companhia Itabirana Telecomunicações Ltda	4,096
187.73.184.0/22	AS270517	tryideas ltda	1,024
187.73.188.0/22	AS270543	Gwg telco telecomunicaçoes eireli	1,024
187.73.132.0/24	AS28576	CTINET SOLUCOES EM CONECTIVIDADE E INFORMATICA LTD	256
187.73.130.0/24	AS28576	CTINET SOLUCOES EM CONECTIVIDADE E INFORMATICA LTD	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

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Pingable IPs

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

IP Address	ASN	Details
187.73.132.1	AS28576 ITIBR - Instituto de Tecnologia Informacao Brasil	`0.33ms` from São Paulo, BR
187.73.133.102	AS28576 ITIBR - Instituto de Tecnologia Informacao Brasil	`0.31ms` from São Paulo, 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
221.216.61.181	AS4808 China Unicom Beijing Province Network	`4.09ms` from Beijing, CN
101.25.152.181	AS4837 CHINA UNICOM China169 Backbone	`12.64ms` from Beijing, CN
187.76.24.37	AS7738 V tal	`18.96ms` from Fortaleza, BR
65.62.132.245	AS8011 MongoDB, Inc.	`0.10ms` from Frankfurt am Main, DE
168.76.12.213	AS137951 ASLINE LIMITED	`0.76ms` from Hong Kong, HK
82.28.115.149	AS5089 Virgin Media Limited	`9.63ms` from London, GB
45.73.185.101	AS21769 Colocation America Corporation	`0.24ms` from Los Angeles, US
141.8.135.5	AS13238 YANDEX LLC	`3.44ms` from Moscow, RU
61.246.172.245	AS9498 BHARTI Airtel Ltd.	`0.67ms` from Mumbai, IN
15.220.0.149	AS16509 Amazon.com, Inc.	`0.07ms` from Portland, US
58.79.118.229	AS3786 LG DACOM Corporation	`1.55ms` from Seoul, KR
107.148.58.21	AS399195 PEG TECH INC	`0.23ms` from Seoul, KR
1.244.32.117	AS9318 SK Broadband Co Ltd	`3.34ms` from Seoul, KR
222.234.113.5	AS9318 SK Broadband Co Ltd	`2.00ms` from Seoul, KR
121.124.143.101	AS9318 SK Broadband Co Ltd	`9.46ms` from Seoul, KR
77.91.222.69	AS43012 Gastabudstaden AB	`3.47ms` from Stockholm, SE
213.207.91.53	AS9150 Interconnect	`1.84ms` from Amsterdam, NL
174.55.24.101	AS7922 Comcast Cable Communications, LLC	`17.32ms` from Ashburn, US
185.58.40.21	AS24971 MasterDC s.r.o.	`0.18ms` from Brno, CZ
71.205.191.197	AS7922 Comcast Cable Communications, LLC	`4.52ms` from Denver, US
178.32.18.101	AS16276 OVH SAS	`0.10ms` from Gravelines, FR
183.29.137.165	AS4134 CHINANET-BACKBONE	`5.86ms` from Guangzhou, CN
113.161.37.133	AS45899 VNPT Corp	`1.12ms` from Ho Chi Minh City, VN
113.178.99.149	AS45899 VNPT Corp	`3.26ms` from Ho Chi Minh City, VN
76.72.75.101	AS25921 LUS Fiber	`4.91ms` from Houston, US

Traceroute

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

traceroute -a -n -q1 -f2 187.73.133.66

traceroute to 187.73.133.66 (187.73.133.66): 64 hops max, 52 byte packets

2 [] 185.1.90.84 24.291 ms

3 *

4 [AS22356] 177.190.108.42 407.603 ms

5 [AS28576] 187.73.133.66 219.079 ms

Measurement taken from

IPinfo ProbeNet in Madrid, ES

On November 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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