AS18434 Fidelity National Information Services, Inc.

FNIS - Fidelity National Information Services, Inc. · registered in the United States

IPv4 addresses25,34467 prefixes · <0.001% of announced IPv4

Rank in United States#1,915largest network in US by IPv4 space, of 18,338 · <0.01% of US

Rank worldwide#5,419of 79,396 networks with IPv4

IPv6noneno IPv6 routes announced

CountryUnited States18,679 ASNs registered there

Open AS18434 in ASN lookup Look up an IP in this network (12.6.9.1) All networks in United States

IPv4 prefixes

All 67 prefixes, in address order.

12.6.9.0/24
12.19.55.0/24
63.141.160.0/23
64.132.202.0/24
69.36.16.0/24
69.36.18.0/24
69.36.26.0/23
147.249.0.0/23
147.249.4.0/23
147.249.12.0/23
147.249.16.0/23
147.249.19.0/24
147.249.33.0/24
147.249.44.0/24
147.249.52.0/23
147.249.73.0/24
147.249.74.0/24
147.249.87.0/24
147.249.88.0/23
147.249.188.0/23
147.249.193.0/24
147.249.200.0/24
147.249.242.0/23
156.55.27.0/24
156.55.42.0/24
156.55.67.0/24
156.55.68.0/24
156.55.77.0/24
156.55.78.0/24
156.55.110.0/24
156.55.112.0/24
156.55.125.0/24
156.55.127.0/24
156.55.134.0/24
156.55.137.0/24
156.55.138.0/23
156.55.144.0/24
156.55.157.0/24
156.55.164.0/22
156.55.171.0/24
156.55.173.0/24
156.55.174.0/24
156.55.176.0/23
156.55.193.0/24
156.55.200.0/22
156.55.204.0/23
156.55.218.0/24
156.55.240.0/24
156.55.242.0/24
156.55.245.0/24
185.41.232.0/22
195.110.230.0/24
198.84.8.0/23
199.74.216.0/24
199.200.24.0/22
205.141.247.0/24
206.71.16.0/22
206.71.20.0/23
206.71.22.0/24
206.71.28.0/23
206.71.31.0/24
207.67.75.0/24
207.250.225.0/24
207.250.227.0/24
216.189.244.0/24
216.189.252.0/24
216.189.254.0/23

Other ASNs named Fidelity National Information Services, Inc.

2 other networks use the same organisation name; together with AS18434 they announce 28,928 IPv4 addresses.

ASNNameIPv4 addresses

AS46203PNSHS - Fidelity National Information Services, Inc. US3,072

AS30680FISCOM-COLO5-JAX-FL - Fidelity National Information Services, Inc. US512

Similar-sized networks in United States

ASNNameIPv4 addresses

AS13855#1912 CFU-NET - The Municipal Communications Utility of the City of Cedar Falls, Iowa25,344

AS48806#1913 stackster Stackster LLC25,344

AS15149#1914 EZZI-101-BGP - Core Technology Services, Inc.25,344

AS18834#1916 NETWORKIP - Network IP25,344

AS22255#1917 ALLEGHENYHEALTHNETWORK - Allegheny Health Network25,344

AS13876#1918 FIBER-64 - FiberLight, LLC25,088

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