Source CIDR

BingBot

Microsoft publishes Bing crawler ranges as JSON. ASNs here are illustrative groupings - adjust to match your internal peering and cloud maps.

Autonomous systems

AS8075 AS12076
GoogleBot Google crawler feeds and verification context. AhrefsBot SEO crawler API feed and rDNS notes. Common Crawl CCBot's official machine-readable prefix feed. YandexBot Yandex crawler ranges and ASN context.