{"asn":15373,"name":"CZESTMAN-AS","description":"Academic AS dedicated to Metropolitan Area Network CzestMAN","country":"PL","rir":"","prefix_v4":7,"prefix_v6":1,"updated_at":"2026-06-09T06:15:17.080504Z","upstreams":[{"asn":25084,"name":"CZESTMAN-COM-AS","country":"PL"},{"asn":8501,"name":"PIONIER-AS","country":"PL"},{"asn":196844,"name":"PIONIER-AS-ams-ix","country":"PL"}],"downstreams":[{"asn":25084,"name":"CZESTMAN-COM-AS","country":"PL"}],"peers":null,"ixp_memberships":null}