AS5421

Name: AS5421 — Sofia University St. Kliment Ohridski
Creator: ipdex

Sofia University St. Kliment Ohridski Unknown registered in Bulgaria

3IPv4 prefixes

3IPv6 prefixes

100%RPKI-valid

#14,060AS Rank

327/327RIS visibility

#155Rank in Bulgaria

1995-09-25Allocated

Sofia University St. Kliment Ohridski (AS5421) — Unknown, registered in Bulgaria. announces 3 IPv4 prefixes + 3 IPv6 prefixes. Rank in Bulgaria: #155. Allocated: 1995-09-25.

IPv4 3IPv6 3

Announced prefixes · 6

RPKI: rpki.cloudflare.com · 2026-06-17

Routing: 3 IPv4 · 3 IPv6 announced · RIS visibility 327/327 RIS peers · RIPEstat · 2026-06-17

Prefix history

Announced prefixes Source: ipdex daily snapshot · sparse rows, value holds until the next change (steps)

Data table

Day	Announced prefixes
2026-06-12	6
2026-06-13	6

AS topology · Customer cone 1

Providers · 2

AS8717 A1 Bulgaria EAD
AS6802 Bulgarian Research and Education Network Association (BREN)

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