{"asn":23528,"name":"SPARKPOST","description":"","country":"US","rir":"ARIN","prefix_v4":81,"prefix_v6":0,"updated_at":"2026-05-23T16:41:41.901125Z","upstreams":[{"asn":174,"name":"COGENT-174","country":"US"},{"asn":3257,"name":"GTT-BACKBONE","country":"US"},{"asn":6939,"name":"HURRICANE","country":"US"}],"downstreams":null,"peers":null,"ixp_memberships":null}