AS28370 GUIFAMI Informatica Ltda.

AS28370 - GUIFAMI Informatica Ltda. · registered in Brazil

IPv4 addresses9,2165 prefixes · <0.001% of announced IPv4

Rank in Brazil#296largest network in BR by IPv4 space, of 7,969 · 0.01% of BR

Rank worldwide#9,487of 79,396 networks with IPv4

IPv61 x /32 (65,536 x /48)12 prefixes

CountryBrazil8,771 ASNs registered there

Open AS28370 in ASN lookup Look up an IP in this network (45.172.144.1) All networks in Brazil

IPv4 prefixes

All 5 prefixes, in address order.

45.172.144.0/23
45.172.146.0/24
45.172.147.0/24
187.45.144.0/20
189.84.144.0/20

IPv6 prefixes

All 12 prefixes.

2804:591c::/43
2804:591c:20::/43
2804:591c:40::/42
2804:591c:80::/41
2804:591c:100::/40
2804:591c:200::/39
2804:591c:400::/38
2804:591c:800::/37
2804:591c:1000::/36
2804:591c:2000::/35
2804:591c:4000::/34
2804:591c:8000::/33

Similar-sized networks in Brazil

ASNNameIPv4 addresses

AS28187#293 AS28187 - Stratus Telecomunicacoes Ltda9,216

AS28255#294 AS28255 - Wtl Telecomunicacoes do Brasil Ltda9,216

AS28305#295 AS28305 - PERSIS INTERNET LTDA9,216

AS52945#297 AS52945 - E&L Producoes de Software Ltda9,216

AS52968#298 AS52968 - TECMIDIAWEB LTDA9,216

AS52999#299 AS52999 - START NETWORKS S/A9,216

IP-to-ASN data: iptoasn.com (public domain). Snapshot downloaded 2026-11-11, refreshed daily. Ranges are what each network announces in BGP, not registry allocations. Data sources