AS53820#508 CSUR - Coop de solidarite du Suroit-CSUR3,072
AS63419#509 DPCDSB - Dufferin-Peel Catholic District School Board3,072
IP-to-ASN data: iptoasn.com (public domain). Snapshot downloaded 2026-11-11, refreshed daily. Ranges are what each network announces in BGP, not registry allocations. Data sources