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:      [email protected]
country:     BR
created:     19980105
changed:     20211213

nic-hdl-br:  GRSDU7
person:      Grupo de Seguran�a Durand
e-mail:      [email protected]
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

Read more

Pingable IPs

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

IP Address	ASN	Details
187.73.133.102	AS28576 ITIBR - Instituto de Tecnologia Informacao Brasil	`0.32ms` from São Paulo, BR
187.73.132.1	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
203.172.153.101	AS23974 Ministry of education	`2.40ms` from Bangkok, TH
175.17.36.181	AS4837 CHINA UNICOM China169 Backbone	`3.30ms` from Changchun, CN
47.222.110.5	AS19108 Optimum	`5.05ms` from Dallas, US
137.26.92.229	AS33588 Charter Communications LLC	`6.49ms` from Denver, US
3.71.84.101	AS16509 Amazon.com, Inc.	`0.12ms` from Frankfurt am Main, DE
105.214.93.117	AS16637 MTN SA	`1.82ms` from Johannesburg, ZA
123.189.87.165	AS4837 CHINA UNICOM China169 Backbone	`4.32ms` from Liaoyang, CN
90.39.238.37	AS3215 Orange S.A.	`6.87ms` from Marseille, FR
94.158.208.69	AS211914 AER-CA LLC	`1.64ms` from Moscow, RU
201.174.166.133	AS32098 Transtelco Inc	`9.88ms` from Phoenix, US
192.110.163.149	AS53755 Input Output Flood LLC	`0.56ms` from Phoenix, US
60.214.72.213	AS4837 CHINA UNICOM China169 Backbone	`8.75ms` from Qingdao, CN
201.197.216.5	AS11830 Instituto Costarricense de Electricidad y Telecom.	`4.38ms` from San Jose, CR
131.196.179.133	AS265757 Intersur Limitada	`6.30ms` from Santiago, CL
177.8.96.213	AS53187 UNIVERSIDADE ESTADUAL DE CAMPINAS	`2.44ms` from Sao Paulo, BR
14.43.145.117	AS4766 Korea Telecom	`6.48ms` from Seoul, KR
58.237.100.149	AS9318 SK Broadband Co Ltd	`6.12ms` from Seoul, KR
36.152.254.37	AS56046 China Mobile communications corporation	`3.65ms` from Suzhou, CN
89.37.153.85	AS58224 Iran Telecommunication Company PJS	`15.65ms` from Yerevan, AM
192.142.18.117	AS214036 Ultahost, Inc.	`1.19ms` from Amsterdam, NL
192.144.170.133	AS45090 Shenzhen Tencent Computer Systems Company Limited	`1.81ms` from Beijing, CN
64.25.219.21	AS13536 FirstLight Fiber, Inc.	`4.89ms` from Boston, US
170.239.25.85	AS264321 NEW OESTE TELECOMUNICACOES LTDA	`12.07ms` from Curitiba, BR
177.202.120.85	AS8167 V tal	`10.89ms` from Curitiba, BR
64.86.189.5	AS6453 TATA COMMUNICATIONS (AMERICA) INC	`0.53ms` from Dallas, US

Traceroute

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

traceroute -a -n -q1 -f4 -m8 187.73.128.39

traceroute to 187.73.128.39 (187.73.128.39): 8 hops max, 52 byte packets

4 [AS6424] 193.163.151.208 7.185 ms

5 [AS6424] 193.109.190.9 122.903 ms

6 *

7 *

8 *

Measurement taken from

IPinfo ProbeNet in Lisbon, PT

On December 6th 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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