Home ASN LookupAS28370

AS28370 AS28370 - GUIFAMI Informatica Ltda.

🇧🇷

Org handle: 143794

LACNICallocatedASPA Published

Announced Prefixes (BGP)

27total

25 IPv42 IPv6

IPv4 Addresses

Allocated (RIR)9,216

Announced (BGP)26,112

IPv6 Addresses

Allocated (RIR)7.9×10²⁸

Announced (BGP)7.9×10²⁸

Prefix Limit (IPv4)

Prefix Limit (IPv6)

Country

🇧🇷 BR

RIR

LACNIC

Status

allocated

Allocated

2007-12-18

Routing hygiene

Score 10/100 · Low risk

RPKI ROA coverage

100%

no RPKI invalid prefixes

IRR route objects

100%

no origin mismatches

Hijack signals

0 announced against others' ROAs, 0 own announced by others

Upstreams

diversity 0/100

Only one upstream seen in the AS paths of its routes

Based on 27 announced prefixes, updated daily (2026-10-23). How the score works · RPKI explained

Announced Prefixes

(BGP)27

Prefix	RPKI	IRR	Last Seen
45.172.144.0/22	Valid	Other IRR	2026-10-26
45.172.144.0/23	Valid	Other IRR	2026-10-26
45.172.144.0/24	Valid	Other IRR	2026-10-26
45.172.145.0/24	Valid	Other IRR	2026-10-26
45.172.146.0/23	Valid	Other IRR	2026-10-26
45.172.146.0/24	Valid	Other IRR	2026-10-26
187.45.144.0/20	Valid	Other IRR	2026-10-26
187.45.152.0/21	Valid	Other IRR	2026-10-26
187.45.152.0/22	Valid	Other IRR	2026-10-26
187.45.152.0/23	Valid	Other IRR	2026-10-26

1-10 of 27

1 / 3

Allocated Prefixes

(RIR)4

Prefix	Country	RIR	Status
45.172.144.0/22	🇧🇷 BR	LACNIC	allocated
187.45.144.0/20	🇧🇷 BR	LACNIC	allocated
189.84.144.0/20	🇧🇷 BR	LACNIC	allocated
2804:591c::/32	🇧🇷 BR	LACNIC	allocated

All 27 announced prefixes of AS28370 →

Upstream Providers(2)

ASN	Name
AS53013	🇧🇷AS53013 - UFINET BRASIL S.A.
AS271253	🇧🇷AS271253 - LINK BRASIL TELECOMUNICACOES LTDA

Downstream Customers(2)

ASN	Name
AS267608	🇧🇷AS267608 - Micheleto Internet Eireli
AS273514	🇧🇷AS273514 - AMPLE SOLUCOES TECNOLOGICAS LTDA

BGP Neighbours

(seen in AS paths)

Upstreams (1)

Networks AS28370 hands its own prefixes to: transit providers, or peers at an exchange.

AS3356Level 3 Parent27

Downstreams (16)

Networks whose own prefixes AS28370 passes on: usually its customers.

AS263535REDE GLOBAL TECNOLOGIA LTDA ME15
AS267608Micheleto Internet Eireli15
AS264426VM Provedora De Internet Ltda Me13
AS53079MD Brasil Tecnologia Da Informacao Ltda10
AS267556Explorer Telecom Ltda ME9
AS263060Atilio Marcos Marcari E Cia Ltda Me8
AS268198StacaoNET Telecomunicacoes8
AS263963Goldweb Barretos Servicos De Telecomunicacoes Ltda5
AS28657MD Brasil Tecnologia Da Informacao Ltda4
AS273514AMPLE SOLUCOES TECNOLOGICAS LTDA3
AS52593Monte Alto Net Ltda2
AS268521PONTO.COM TELECOM2
AS269016F T L Net Provedor De Internet Ltda ME2
AS269168NEWSIGNAL INTERNET E TECNOLOGIA2
AS270962NETICO TELECOMUNICACAO LTDA2
AS272253FLASH PROVEDOR DE INTERNET LTDA1

Other adjacent networks (3)

Adjacent to AS28370 in the transit part of AS paths: peers, providers or customers.

AS268624Gamers Club Ltda99
AS6939Hurricane Electric2
AS6057Administracion Nacional De Telecomunicaciones1

ASPA

Published2 upstreams, 2 downstreams

Authorized Upstream Providers

AS53013 AS271253

Expires 2026-10-27

Listed as Upstream Provider by

2 ASNs

View full ASPA details →

External Links

LACNIC Whois RIPEstat

Learn more

What is an ASN?Autonomous systems, ASN ranges and how they are assigned
RPKI and route origin validationWhat the RPKI badges on the prefix list mean
How to run an ASPA checkVerify the upstream providers listed above
IPv4 transfers in the LACNIC regionMonthly volume and the latest registry transfers
ASN data in AI agents and SIEMMCP server and API integrations

API

Open

GEThttps://api.ipctl.io/v1/asn/28370

Returns ASN details, announced prefixes, and BGP routing data.

curl -s "https://api.ipctl.io/v1/asn/28370" | jq