$ query “AS28203” --type=asn → 1 result(s)
AS28203 · WEBCENTER-SIST-PREST
Webcenter Sist Prest de Servicos de Informatica
AS28203 is operated by Webcenter Sist Prest de Servicos de Informatica and serves as an enterprise stub network, based in Brazil since 2008. The system announces 3 840 IPv4 addresses. Its primary geographic footprint is in Brazil. No IPv6 support — it's 2026, just saying.
Basic Information
- Country
- 🇧🇷 Brazil
- Category
- Business
- Network Role
- Stub Network
- Data Origin
- Authoritative — Metadata from authoritative RIR registry (ARIN, RIPE, APNIC, etc.)
- Registered
- April 10, 2008
- Last Changed
- March 04, 2026
- Last Seen
- April 29, 2026 (active)
Prefix Summary
- IPv4 Prefixes (raw / aggregated)
- 4 / 4
- IPv6 Prefixes (raw / aggregated)
- 0 / 0
- IPv4 Addresses
- 3 840
- Largest IPv4 Prefix
- /21 (2 048 addresses)
- Geolocated Countries
- 🇧🇷 Brazil (64 IPs)
- Prefix Changed
- March 04, 2026
Reputation
- Reputation
- Pristine — 0 flagged IPs
Connectivity Summary
- Upstream Providers
- 1 upstream providing transit
- Degree
- 1 unique BGP neighbor
- Reach
- 0 networks in customer cone
Upstream Providers (1)
- AS22356 — DURAND-BRASIL
Prefix Lists
IPv4 Prefixes (4 total)
- 189.91.40.0/21 (2 048 addresses (/21 prefix))
- 189.91.36.0/22 (1 024 addresses (/22 prefix))
- 189.91.32.0/23 (512 addresses (/23 prefix))
- 189.91.34.0/24 (256 addresses (/24 prefix))