AS21519 Sinclair Broadcast Group, Inc.

SBG-AS2 - Sinclair Broadcast Group, Inc. · registered in the United States

IPv4 addresses1,0241 prefixes · <0.001% of announced IPv4

Rank in United States#8,276largest network in US by IPv4 space, of 18,338 · <0.01% of US

Rank worldwide#36,659of 79,396 networks with IPv4

IPv6noneno IPv6 routes announced

CountryUnited States18,679 ASNs registered there

Open AS21519 in ASN lookup Look up an IP in this network (208.73.28.1) All networks in United States

IPv4 prefixes

All 1 prefix, in address order.

208.73.28.0/22

Other ASNs named Sinclair Broadcast Group, Inc.

1 other network uses the same organisation name; together with AS21519 they announce 6,400 IPv4 addresses.

ASNNameIPv4 addresses

AS32058SBG-AS1 - Sinclair Broadcast Group, Inc. US5,376

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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