Overview
Blizzard Entertainment operates a content or platform network associated with AS57976.
This record includes the representative IPv4 CIDR 137.221.64.0/19. It is not an exhaustive list of the network’s address space or current routing announcements.
This is a network-origin record, not an exact physical-facility location or proof that a request is automated. Evaluate the ASN and CIDR together with the User-Agent, request path, request rate, session behavior, and application context before enforcement.
Network prefixes
These are documented prefixes associated with this routed network. They are not necessarily the network’s complete current address space.
- Representative prefix
-
137.221.64.0/19
IPv4 · Active · RPKI Valid · checked 2026-08-07
Provider and network
- Network / Provider Name
- Blizzard Entertainment
- Registered / Operating Organization
- Blizzard Entertainment, Inc
- ISP / Network Operator
- Blizzard Entertainment, Inc
- ASN
-
AS57976 - ASN Name
- Blizzard Entertainment, Inc
- Network Name
- Blizzard Entertainment, Inc
- Current Services
- Game services, content delivery, account services, and application traffic
- Provider Type
- Enterprise
- Network Type
- Content platform network
Network scope
- Network Country
- US
Traffic and handling
- Traffic Classification
- Platform Network Traffic
- Traffic Label
- Platform Network
- Risk Level
- Low
- Recommended Action
- Log by default. Verify the claimed service or User-Agent and evaluate request behavior before allowing, rate-limiting, or blocking.
- Default Rule Action
- Log
- Common Pattern
- Traffic may include public services, APIs, webhooks, preview fetchers, media delivery, crawlers, and operator automation.
- Detection Notes
- Match AS57976 and representative CIDR 137.221.64.0/19, then verify the claimed service, User-Agent, request path, request rate, and session behavior before enforcement.
Relationships
- Operator
- Blizzard Entertainment, Inc Evidence Checked 2026-08-07