$ query “AS28370” --type=asn → 1 result(s)
AS28370 · GUIFAMI-INFORMATICA
GUIFAMI Informática Ltda.
AS28370 is owned by GUIFAMI Informática Ltda. and is a mid-size transit provider, established in Brazil in 2007. The system announces 9 216 IPv4 addresses, and supports IPv6. The bulk of its IP address space is in Brazil.
- Top 5% — Top 5% of all autonomous systems by reach and degree
Basic Information
- Country
- 🇧🇷 Brazil
- Category
- Hosting
- Network Role
- Mid-size Transit
- Data Origin
- Authoritative — Metadata from authoritative RIR registry (ARIN, RIPE, APNIC, etc.)
- Registered
- December 18, 2007
- Last Changed
- March 04, 2026
- Last Seen
- October 21, 2026 (active)
Prefix Summary
- IPv4 Prefixes (raw / aggregated)
- 25 / 3
- IPv6 Prefixes (raw / aggregated)
- 2 / 1
- IPv4 Addresses
- 9 216
- Largest IPv4 Prefix
- /20 (4 096 addresses)
- Largest IPv6 Prefix
- /32
- Geolocated Countries
- 🇧🇷 Brazil (9 216 IPs)
- Prefix Changed
- September 12, 2026
Reputation
- Reputation
- Pristine — 0 flagged IPs
Connectivity Summary
- Upstream Providers
- 5 upstreams providing transit
- Peers
- 29 networks exchanging traffic without transit
- Downstream Customers
- 18 downstreams buying transit
- Degree
- 52 unique BGP neighbors
- Reach
- 20 networks in customer cone
Upstream Providers (5)
Prefix Lists
IPv4 Prefixes (25 total)
- 187.45.144.0/20 (4 096 addresses (/20 prefix))
- 189.84.144.0/20 (4 096 addresses (/20 prefix))
- 45.172.144.0/22 (1 024 addresses (/22 prefix))
IPv6 Prefixes (2 total)
- 2804:591c::/32