AS33435 City of Springfield, Massachusetts

CITYOFSPRINGFIELDMA - City of Springfield, Massachusetts · registered in the United States

IPv4 addresses2561 prefixes · <0.001% of announced IPv4

Rank in United States#15,304largest network in US by IPv4 space, of 18,338 · <0.01% of US

Rank worldwide#65,578of 79,396 networks with IPv4

IPv6noneno IPv6 routes announced

CountryUnited States18,679 ASNs registered there

Open AS33435 in ASN lookup Look up an IP in this network (66.37.46.1) All networks in United States

IPv4 prefixes

All 1 prefix, in address order.

66.37.46.0/24

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ASNNameIPv4 addresses

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AS33449#15305 ZINIO-PRD-01 - Zinio Systems, Inc256

AS33462#15306 JANUS-LEXINGTON-MA - JANUS Research Group256

AS33466#15307 FLVS-AS - Florida Virtual School256

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