AS28203 Webcenter Sist Prest de Servicos de Informatica

🇧🇷

Org handle: 102551

LACNICallocated

Announced Prefixes (BGP)

8total

8 IPv40 IPv6

IPv4 Addresses

Allocated (RIR)4,096

Announced (BGP)4,864

IPv6 Addresses

Allocated (RIR)0

Announced (BGP)0

Prefix Limit (IPv4)

Prefix Limit (IPv6)

Country

RIR

Status

allocated

Allocated

2008-04-10

Announced Prefixes

(BGP)8

Prefix	RPKI	IRR	Last Seen
189.91.32.0/23	No ROA	-	2026-10-11
189.91.34.0/24	No ROA	-	2026-10-11
189.91.36.0/22	No ROA	-	2026-10-11
189.91.40.0/21	No ROA	-	2026-10-11
189.91.43.0/24	No ROA	-	2026-10-11
189.91.44.0/24	No ROA	-	2026-10-11
189.91.45.0/24	No ROA	-	2026-10-11
189.91.46.0/24	No ROA	-	2026-10-11

(RIR)1

Prefix	Country	RIR	Status
189.91.32.0/20	🇧🇷 BR	LACNIC	allocated

(seen in AS paths)

Networks AS28203 hands its own prefixes to: transit providers, or peers at an exchange.

ASPA

No ASPA

External Links

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
ASPA explainedWhy AS28203 should publish an ASPA object
IPv4 transfers in the LACNIC regionMonthly volume and the latest registry transfers
ASN data in AI agents and SIEMMCP server and API integrations

API

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

curl -s "https://api.ipctl.io/v1/asn/28203" | jq