186.251.212.0/23

AS274743 · FASTWEB TELECOMUNICACOES

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Summary

Country	Brazil
Domain	fastwebtelecom.com.br
ASN	AS274743
Registry	LACNIC
ID	DBP9

WHOIS Details

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

inetnum:     186.251.212.0/24
aut-num:     AS274743
abuse-c:     DABPE186
owner:       FASTWEB TELECOMUNICACOES
ownerid:     10.552.048/0001-66
responsible: Daniel Brito Pereira
country:     BR
owner-c:     DABPE186
tech-c:      DABPE186
created:     20101129
changed:     20250731

nic-hdl-br:  DABPE186
person:      Daniel Brito Pereira
e-mail:      britocs820@gmail.com
country:     BR
created:     20241206
changed:     20250804

Overlapping Ranges

BGP prefixes that are contained by 186.251.212.0/23

Range	ASN	Company	Num of IPs
186.251.212.0/24	AS274743	FASTWEB TELECOMUNICACOES	256
186.251.213.0/24	AS274743	FASTWEB TELECOMUNICACOES	256

Nearby Ranges

BGP prefixes that overlap with 186.251.0.0/16

Range	ASN	Company	Num of IPs
186.251.96.0/21	AS262828	Acesse Facil Telecomunicacoes Ltda	2,048
186.251.176.0/21	AS262832	Infotechnet Informatica e Assistencia Tecnica Ltda	2,048
186.251.160.0/21	AS53227	M.V. Martin & Cia Ltda.	2,048
186.251.192.0/21	AS262834	REDECONESUL TELECOMUNICACOES LTDA	2,048
186.251.0.0/21	AS262820	OnLine Assis Telecomunicações Ltda-EPP	2,048
186.251.240.0/21	AS262839	Yawl Telecomunicação e Rep. de Informática Ltda.	2,048
186.251.48.0/21	AS262824	A C ROCHA INFORMATICA LTDA	2,048
186.251.80.0/21	AS53223	Master Net Telecom LTDA	2,048
186.251.16.0/21	AS53222	Seanet Telecom Ltda	2,048
186.251.64.0/21	AS262826	PW INFORMATICA E TECNOLOGIA LTDA	2,048
186.251.248.0/21	AS267513	Seanet Telecom Carazinho Eireli	2,048
186.251.216.0/22	AS263005	Net Master Telecom Ltda	1,024
186.251.220.0/22	AS263005	Net Master Telecom Ltda	1,024
186.251.12.0/22	AS263561	RODRIGO BORGHI DA SILVA & CIA LTDA	1,024
186.251.172.0/22	AS263880	WANTEL TECNOLOGIA LTDA. EPP	1,024
186.251.72.0/22	AS61877	MGX Telecom	1,024
186.251.28.0/22	AS262380	Rontel LTDA	1,024
186.251.104.0/22	AS262821	PHS INTERNET E SUPRIMENTOS LTDA - ME	1,024
186.251.40.0/22	AS262825	JL INFORMATICA LTDA	1,024
186.251.44.0/22	AS262825	JL INFORMATICA LTDA	1,024
186.251.152.0/22	AS262836	ABC Net Telecomunicações e Tecnologia Ltda	1,024
186.251.56.0/22	AS262903	Tubaron Telecom	1,024
186.251.168.0/22	AS262907	BRASIL TECPAR \| AMIGO \| AVATO	1,024
186.251.8.0/22	AS262988	Pombonet Telecomunicações e Informática	1,024
186.251.76.0/22	AS262993	CNX TELECOMUNICACOES LTDA	1,024
186.251.184.0/22	AS263003	VIPNET TELECOMUNICAO E INFORMATICA LTDA.	1,024
186.251.144.0/22	AS28130	CERTTO TELECOMUNICAÇÕES LTDA EPP.	1,024
186.251.148.0/22	AS28130	CERTTO TELECOMUNICAÇÕES LTDA EPP.	1,024
186.251.200.0/22	AS28201	Companhia Itabirana Telecomunicações Ltda	1,024
186.251.112.0/22	AS28220	Alares Cabo Servicos de Telecomunicacoes S.A.	1,024
186.251.116.0/22	AS28220	Alares Cabo Servicos de Telecomunicacoes S.A.	1,024
186.251.108.0/22	AS28343	UNIFIQUE TELECOMUNICACOES S/A	1,024
186.251.224.0/22	AS28649	Desktop Sigmanet Comunicação Multimídia SA	1,024
186.251.92.0/22	AS52624	WEB TELECOMUNICAÇÕES LTDA	1,024
186.251.124.0/22	AS52899	FLIX TELECOM	1,024
186.251.156.0/22	AS52900	BRASIL TECPAR \| AMIGO \| AVATO	1,024
186.251.228.0/22	AS52912	VIEIRA E RETECHESKI LTDA	1,024
186.251.232.0/22	AS53229	Industrias Arteb S.A	1,024
186.251.32.0/22	AS270752	Focustelecomm Tecnologia em Telecomunicacoes Ltda	1,024
186.251.206.0/23	AS266143	UP LINK INTERNET BANDA LARGA	512
186.251.62.0/23	AS52622	Tribunal Regional do Trabalho da 4 Regiao	512
186.251.204.0/23	AS263580	Everest Soluções em Telecomunicações Ltda	512
186.251.188.0/23	AS263568	Guardian Brasil Vidros Planos Ltda.	512
186.251.214.0/23	AS22128	Defferrari Solucoes em Internet Ltda	512
186.251.61.0/24	AS52636	CESB-Centro de Educacao Superior de Brasilia LTDA	256
186.251.39.0/24	AS52914	Associacao Educacional Nove de Julho	256
186.251.78.0/24	AS262993	Netcom serviços de telecomunicações	256
186.251.38.0/24	AS52910	A. Angeloni & Cia Ltda	256
186.251.212.0/24	AS274743	FASTWEB TELECOMUNICACOES	256
186.251.213.0/24	AS274743	FASTWEB TELECOMUNICACOES	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

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

IP Address	ASN	Details
186.251.212.2	AS274743 FASTWEB TELECOMUNICACOES	`1.21ms` 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
60.206.88.103	AS4808 China Unicom Beijing Province Network	`4.06ms` from Beijing, CN
151.203.10.23	AS701 Verizon Business	`1.98ms` from Boston, US
217.13.110.7	AS208126 ViNetwork Kft.	`0.54ms` from Budapest, HU
20.162.58.7	AS8075 Microsoft Corporation	`0.16ms` from Cardiff, GB
184.96.221.231	AS209 CenturyLink Communications, LLC	`2.69ms` from Denver, US
31.57.143.151	AS9304 HGC Global Communications Limited	`3.08ms` from Hong Kong, HK
207.82.71.167	AS3561 CenturyLink Communications, LLC	`1.61ms` from London, GB
182.45.13.247	AS4134 CHINANET-BACKBONE	`5.19ms` from Qingdao, CN
187.68.39.183	AS22085 Claro S/A	`13.83ms` from Rio de Janeiro, BR
46.121.133.167	AS12400 Partner Communications Ltd.	`1.02ms` from Rosh Ha‘Ayin, IL
123.174.59.71	AS4134 CHINANET-BACKBONE	`5.95ms` from Taiyuan, CN
213.157.155.167	AS8447 A1 Telekom Austria AG	`5.99ms` from Vienna, AT
141.11.108.7	AS36530 IDC Cube	`0.51ms` from Amsterdam, NL
108.28.201.215	AS701 Verizon Business	`2.09ms` from Ashburn, US
114.253.167.23	AS4808 China Unicom Beijing Province Network	`3.40ms` from Beijing, CN
144.6.248.199	AS4764 Aussie Broadband	`0.74ms` from Brisbane, AU
113.176.219.199	AS45899 VNPT Corp	`8.41ms` from Da Nang, VN
74.234.64.215	AS8075 Microsoft Corporation	`0.13ms` from Dublin, IE
141.51.180.135	AS680 Verein zur Foerderung eines Deutschen Forschungsnetzes e.V.	`6.06ms` from Frankfurt am Main, DE
128.111.108.215	AS131 University of California, Santa Barbara	`3.11ms` from Los Angeles, US
168.199.203.87	AS9009 M247 Europe SRL	`0.37ms` from Montreal, CA
121.1.223.247	AS4685 Asahi Net	`2.31ms` from Osaka, JP
66.136.222.23	AS7018 AT&T Enterprises, LLC	`4.11ms` from San Antonio, US
147.243.39.23	AS8075 Microsoft Corporation	`0.77ms` from San Antonio, US
2.67.2.151	AS44034 Hi3G Access AB	`5.37ms` from Stockholm, SE

Traceroute

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

traceroute -a -n -q1 -m5 186.251.213.244

traceroute to 186.251.213.244 (186.251.213.244): 5 hops max, 52 byte packets

1 [AS202422] 202.78.167.1 0.162 ms

2 [AS199524] 92.223.63.81 0.282 ms

3 *

4 *

5 *

Measurement taken from

IPinfo ProbeNet in Tokyo, JP

On January 30th 2026

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.

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