189.91.40.0/21

AS28203 · Webcenter Sist Prest de Servicos de Informatica

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Summary

Country	Brazil
Domain	webcenter.com.br
ASN	AS28203
Registry	LACNIC
ID	RBA14

WHOIS Details

inetnum:     189.91.40.0/21
aut-num:     AS28203
abuse-c:     RBA2
owner:       Webcenter Sistemas - Prest. Servic Informatica Ltd
ownerid:     05.936.319/0001-47
responsible: Ricardo Buchalla Auada
country:     BR
owner-c:     RBA2
tech-c:      RBA2
inetrev:     189.91.40.0/21
nserver:     gaivota.birdsnet.com.br
nsstat:      20230310 AA
nslastaa:    20230310
nserver:     pelicano.birdsnet.com.br
nsstat:      20230310 AA
nslastaa:    20230310
created:     20110905
changed:     20130307
inetnum-up:  189.91.32.0/20

nic-hdl-br:  RBA2
person:      Ricardo Buchalla Auada
e-mail:      [email protected]
country:     BR
created:     19971222
changed:     20221109

Nearby Ranges

BGP prefixes that overlap with 189.91.0.0/16

Range	ASN	Company	Num of IPs
189.91.64.0/19	AS17222	MUNDIVOX DO BRASIL LTDA	8,192
189.91.0.0/19	AS28202	Rede Brasileira de Comunicacao S/A	8,192
189.91.96.0/19	AS262589	SAMM TECNOLOGIA E TELECOMUNICACOES S.A	8,192
189.91.208.0/20	AS10938	AGENCIA ESTADUAL DE TECNOLOGIA DA INFORMACAO - ATI	4,096
189.91.144.0/20	AS264485	M. COELHO M. LIMA SERVICOS DE TELECOMUNICACAO - ME	4,096
189.91.128.0/20	AS28205	Ibituruna TV por assinatura S/C Ltda	4,096
189.91.176.0/20	AS28207	Teleon Telecomunicaçoes Ltda	4,096
189.91.192.0/20	AS28343	UNIFIQUE TELECOMUNICACOES S/A	4,096
189.91.224.0/20	AS28668	Desktop Sigmanet Comunicação Multimídia SA	4,096
189.91.240.0/20	AS28668	Desktop Sigmanet Comunicação Multimídia SA	4,096
189.91.48.0/20	AS28204	Keraxweb Serviços de Int. e Internet Ltda	4,096
189.91.164.0/22	AS271507	VIRTUAL CONECT LTDA	1,024
189.91.172.0/22	AS271300	LOGIN PROVEDOR DE INTERNET LTDA	1,024
189.91.36.0/22	AS28203	Webcenter Sistemas - Prest. Servic Informatica Ltd	1,024
189.91.171.0/24	AS271584	ALEXSANDRA DE OLIVEIRA LIMA	256

Hosted domains

There are 240 domain names hosted across 11 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
189.91.45.21	uroclinicalorena.com.br	192
189.91.46.179	terraverao.com.br	10
189.91.46.162	tfortitch.com.br	5
189.91.46.201	aflourencorodrigues.com.br	5
189.91.46.150	equilibrio-superpremium.com	2
189.91.46.210	mbm.com.br	1
189.91.46.178	expertisegroup.com.br	1

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

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

IP Address	ASN	Details
189.91.45.254	AS28203 Webcenter Sist Prest de Servicos de Informatica	`0.40ms` from São Paulo, BR
189.91.46.233	AS28203 Webcenter Sist Prest de Servicos de Informatica	`0.23ms` from São Paulo, BR
189.91.47.250	AS28203 Webcenter Sist Prest de Servicos de Informatica	`0.23ms` 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
131.180.180.5	AS1128 SURF B.V.	`1.48ms` from Amsterdam, NL
44.209.91.37	AS14618 Amazon.com, Inc.	`0.59ms` from Ashburn, US
178.253.206.69	AS9125 Drustvo za telekomunikacije Orion telekom doo Beograd-Zemun	`0.37ms` from Belgrade, RS
52.13.197.229	AS16509 Amazon.com, Inc.	`0.18ms` from Boardman, US
79.218.159.245	AS3320 Deutsche Telekom AG	`5.27ms` from Duesseldorf, DE
12.116.74.149	AS7018 AT&T Enterprises, LLC	`1.08ms` from Durham, US
91.244.236.5	AS15830 Equinix (EMEA) Acquisition Enterprises B.V.	`0.40ms` from London, GB
191.88.126.181	AS27831 Colombia Móvil	`16.54ms` from Medellin, CO
73.39.98.101	AS7922 Comcast Cable Communications, LLC	`11.21ms` from New York City, US
180.153.163.245	AS4812 China Telecom (Group)	`3.46ms` from Shanghai, CN
37.151.19.69	AS9198 JSC Kazakhtelecom	`5.25ms` from Astana, KZ
74.97.183.37	AS701 Verizon Business	`2.98ms` from Boston, US
194.149.12.21	AS5588 T-Mobile Czech Republic a.s.	`1.62ms` from Budapest, HU
197.147.87.245	AS36884 Wana Corporate	`7.74ms` from Casablanca, MA
175.16.103.117	AS4837 CHINA UNICOM China169 Backbone	`3.10ms` from Changchun, CN
69.25.240.117	AS19024 Unitas Global	`0.67ms` from Chicago, US
5.31.39.181	AS15802 Emirates Integrated Telecommunications Company PJSC	`4.49ms` from Dubai, AE
20.105.126.5	AS8075 Microsoft Corporation	`0.17ms` from Dublin, IE
217.22.196.21	AS20849 CONTINUM AG	`2.48ms` from Frankfurt am Main, DE
113.22.158.213	AS18403 FPT Telecom Company	`10.15ms` from Hanoi, VN
8.155.47.21	AS37963 Hangzhou Alibaba Advertising Co.,Ltd.	`0.47ms` from Heyuan, CN
176.35.211.69	AS5413 Wavenet Limited	`2.65ms` from London, GB
138.197.240.21	AS14061 DigitalOcean, LLC	`0.53ms` from New York City, US
63.201.236.101	AS7018 AT&T Enterprises, LLC	`1.58ms` from San Jose, US
211.38.58.69	AS4766 Korea Telecom	`4.70ms` from Seoul, KR

Traceroute

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

traceroute -a -n -q1 -m5 189.91.43.242

traceroute to 189.91.43.242 (189.91.43.242): 5 hops max, 52 byte packets

1 [AS22356] 186.192.159.1 0.131 ms

2 [AS22356] 177.190.108.229 0.584 ms

3 *

4 *

5 *

Measurement taken from

IPinfo ProbeNet in Fortaleza, BR

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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