$ query “AS28202” --type=asn → 1 result(s)
AS28202 · MASTER
MASTER S/A
AS28202 belongs to MASTER S/A and is a mid-size transit provider, based in Brazil since 2008. The system announces a solid 212 992 IPv4 addresses, including a /16, and supports IPv6. Its primary geographic footprint is in Brazil, with additional presence in Australia. This AS's prefix announcements have been recently modified.
- Top 5% — Top 5% of all autonomous systems by reach and degree
Basic Information
- Country
- 🇧🇷 Brazil
- Category
- Internet Service Provider
- Network Role
- Mid-size Transit
- Data Origin
- Authoritative — Metadata from authoritative RIR registry (ARIN, RIPE, APNIC, etc.)
- Registered
- April 09, 2008
- Last Changed
- March 04, 2026
- Last Seen
- May 15, 2026 (active)
Prefix Summary
- IPv4 Prefixes (raw / aggregated)
- 1 094 / 9
- IPv6 Prefixes (raw / aggregated)
- 11 / 1
- IPv4 Addresses
- 212 992
- Largest IPv4 Prefix
- /16 (65 536 addresses)
- Largest IPv6 Prefix
- /32
- Geolocated Countries
- 🇧🇷 Brazil (180 576 IPs), 🇦🇺 Australia (122 880 IPs)
- Prefix Changed
- May 16, 2026
Reputation
- Reputation
- Good — 146 flagged IPs out of 212 992 total (0.07%)
Connectivity Summary
- Upstream Providers
- 5 upstreams providing transit
- Peers
- 26 networks exchanging traffic without transit
- Downstream Customers
- 31 downstreams buying transit
- Unclassified
- 3 unclassified BGP neighbors
- Degree
- 65 unique BGP neighbors
- Reach
- 176 networks in customer cone
Upstream Providers (5)
Prefix Lists
IPv4 Prefixes (1 094 total)
- 191.53.0.0/16 (65 536 addresses (/16 prefix))
- 177.44.0.0/17 (32 768 addresses (/17 prefix))
- 191.240.0.0/17 (32 768 addresses (/17 prefix))
- 177.130.128.0/18 (16 384 addresses (/18 prefix))
- 186.216.64.0/18 (16 384 addresses (/18 prefix))
- 187.44.0.0/18 (16 384 addresses (/18 prefix))
- 187.120.64.0/18 (16 384 addresses (/18 prefix))
- 179.189.160.0/19 (8 192 addresses (/19 prefix))
- 189.91.0.0/19 (8 192 addresses (/19 prefix))
IPv6 Prefixes (11 total)
- 2804:87c::/32