AS400543 NEWTON HEALTHCARE CORPORATION

NHC-BGP-AS - NEWTON HEALTHCARE CORPORATION · registered in the United States

IPv4 addresses2561 prefixes · <0.001% of announced IPv4

Rank in United States#17,921largest network in US by IPv4 space, of 18,338 · <0.01% of US

Rank worldwide#78,882of 79,396 networks with IPv4

IPv6noneno IPv6 routes announced

CountryUnited States18,679 ASNs registered there

Open AS400543 in ASN lookup Look up an IP in this network (12.158.148.1) All networks in United States

IPv4 prefixes

All 1 prefix, in address order.

12.158.148.0/24

Similar-sized networks in United States

ASNNameIPv4 addresses

AS400527#17918 AS-PROPONENT - Proponent256

AS400531#17919 WESTHOLT-ASN-01 - West Holt Memorial Hospital256

AS400538#17920 QSI-NETWORK-SOLUTIONS - QSi Network Solutions256

AS400545#17922 CYGNUS-COMMUNICATIONS - Cygnus Communications256

AS400553#17923 SUPERCORE - SuperCore LLC256

AS400559#17924 BOSTON-BROADBAND - Boston Broadband256

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