AS138938 NORTHERN TRUST CORPORATION

NTC-AS-INPE - NORTHERN TRUST CORPORATION · registered in the United States

IPv4 addresses2561 prefixes · <0.001% of announced IPv4

Rank in United States#16,349largest network in US by IPv4 space, of 18,338 · <0.01% of US

Rank worldwide#70,848of 79,396 networks with IPv4

IPv6noneno IPv6 routes announced

CountryUnited States18,679 ASNs registered there

Open AS138938 in ASN lookup Look up an IP in this network (167.179.199.1) All networks in United States

IPv4 prefixes

All 1 prefix, in address order.

167.179.199.0/24

Other ASNs named NORTHERN TRUST CORPORATION

3 other networks use the same organisation name; together with AS138938 they announce 1,536 IPv4 addresses.

ASNNameIPv4 addresses

AS138947NTC-AS-APC - NORTHERN TRUST CORPORATION US512

AS138948NTC-AS-APD - NORTHERN TRUST CORPORATION US512

AS150802NTC-AS-INBAG - NORTHERN TRUST CORPORATION US256

Similar-sized networks in United States

ASNNameIPv4 addresses

AS137194#16346 ZUORA-AS-AP - Zuora Inc256

AS137937#16347 TNSI-AS-AP - Transaction Network Services256

AS138454#16348 TFC-121-138454 - Trinity Fellowship256

AS139682#16350 APKSL-AS-AP - Arnold & Porter Kaye Scholer LLP256

AS139705#16351 TNSI-AS-AP - Transaction Network Services256

AS139706#16352 TNSI-AS-AP - Transaction Network Services256

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