AS7871 SEI Data, Inc.

SEIDATA - SEI Data, Inc. · registered in the United States

IPv4 addresses24,5764 prefixes · <0.001% of announced IPv4

Rank in United States#1,935largest network in US by IPv4 space, of 18,338 · <0.01% of US

Rank worldwide#5,482of 79,396 networks with IPv4

IPv61 x /32 (65,536 x /48)1 prefixes

CountryUnited States18,679 ASNs registered there

Open AS7871 in ASN lookup Look up an IP in this network (98.158.208.1) All networks in United States

IPv4 prefixes

All 4 prefixes, in address order.

98.158.208.0/20
170.4.32.0/19
170.4.176.0/20
206.162.192.0/19

IPv6 prefixes

All 1 prefix.

2607:ff40::/32

Similar-sized networks in United States

ASNNameIPv4 addresses

AS40410#1932 USFRCS-BGP - FRIT24,832

AS401764#1933 PURDUE-NW - Purdue University24,832

AS393398#1934 ASN-DIS - 1515 ROUNDTABLE DR PROPERTY, LLC24,576

AS8057#1936 VISIONNET - Vision Net, Inc.24,576

AS17356#1937 VERMONT-TELE - Vermont Telephone Company, Inc.24,576

AS22442#1938 HOU-PHONOSCOPE - Phonoscope, Inc.24,576

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