ProxySpace

ARIN · updated daily

United States IP ranges

70,617 IPv4 blocks with 1,606,591,392 addresses and 10,920 IPv6 prefixes, registered to United States, the 1st largest IPv4 holding of 239 countries.

IPv4 addresses

1.6B

IPv4 blocks

70,617

IPv6 prefixes

10,920

Share of all IPv4

43.57%

Format

US.txt

Largest networks in United States

Autonomous systems by the IPv4 addresses they announce inside these ranges.

NetworkASNIPv4 addresses
United States Department of Defense (DoD)AS749205,399,296
Amazon.com, Inc.AS16509155,845,632
AT&T Enterprises, LLCAS701889,911,040
Comcast Cable Communications, LLCAS792267,772,160
Microsoft CorporationAS807541,945,856
Verizon BusinessAS70140,553,184
DoD Network Information CenterAS72128,085,504
Level 3 Communications, Inc.AS335626,891,524
Cogent CommunicationsAS17423,922,960
Google LLCAS39698221,870,592

ASN data: IP Geolocation by DB-IP (CC BY 4.0).

Largest IPv4 blocks

The biggest single block is 6.0.0.0/8.

BlockAddressesAllocated
6.0.0.0/816,777,2161994-02-01
7.0.0.0/816,777,2161997-11-24
11.0.0.0/816,777,2161984-01-19
12.0.0.0/816,777,2161983-08-23
17.0.0.0/816,777,2161990-04-16
19.0.0.0/816,777,2161988-06-15
21.0.0.0/816,777,2161991-07-01
22.0.0.0/816,777,2161989-06-26
26.0.0.0/816,777,2161995-05-01
28.0.0.0/816,777,2161996-03-11
29.0.0.0/816,777,2161991-07-01
30.0.0.0/816,777,2161991-07-01
33.0.0.0/816,777,2161991-01-01
38.0.0.0/816,777,2161991-04-16
55.0.0.0/816,777,2161996-10-26

Allocations per year

IPv4 addresses assigned to networks in United States each year, by registration date.

1982: 1,280 addresses. 1983: 18,087,168 addresses. 1984: 17,840,896 addresses. 1985: 1,335,040 addresses. 1986: 8,376,832 addresses. 1987: 8,325,376 addresses. 1988: 45,901,312 addresses. 1989: 54,218,496 addresses. 1990: 89,740,544 addresses. 1991: 154,117,120 addresses. 154.1M 1992: 100,630,784 addresses. 1993: 69,979,648 addresses. 1994: 70,206,976 addresses. 1995: 55,219,200 addresses. 1996: 69,440,000 addresses. 1997: 26,746,624 addresses. 1998: 52,325,120 addresses. 1999: 17,147,904 addresses. 2000: 24,320,256 addresses. 2001: 25,383,424 addresses. 2002: 16,224,512 addresses. 2003: 16,786,432 addresses. 2004: 27,612,512 addresses. 2005: 49,151,744 addresses. 2006: 40,497,920 addresses. 2007: 41,956,352 addresses. 2008: 43,584,000 addresses. 2009: 22,663,680 addresses. 2010: 30,407,680 addresses. 2011: 19,452,160 addresses. 2012: 27,196,928 addresses. 2013: 18,028,800 addresses. 2014: 26,989,568 addresses. 2015: 33,562,112 addresses. 2016: 14,326,016 addresses. 2017: 35,962,112 addresses. 2018: 26,811,392 addresses. 2019: 38,099,712 addresses. 2020: 21,194,240 addresses. 2021: 19,522,048 addresses. 2022: 31,834,368 addresses. 2023: 23,397,632 addresses. 2024: 24,680,704 addresses. 2025: 27,019,264 addresses. 2026: 20,285,504 addresses. 1982 2026

Most recent allocations

BlockAddressesAllocated
173.243.152.0/221,0242026-11-06
209.204.118.0/242562026-11-06
216.52.252.0/242562026-11-06
23.167.116.0/242562026-11-05
23.167.132.0/242562026-11-05
162.208.124.0/235122026-11-05
198.73.80.0/235122026-11-05
204.74.11.0/242562026-11-05
206.179.0.0/1665,5362026-11-05
207.188.24.0/235122026-11-05

Use the list

$curl -s https://proxyspace.pro/Ranges/US.txt -o US.txt
# Block United States with ipset + iptables
ipset create us4 hash:net
while read net; do ipset add us4 "$net"; done < US.txt
iptables -I INPUT -m set --match-set us4 src -j DROP

# Is an address in United States? (Python)
import ipaddress
nets = [ipaddress.ip_network(l) for l in open("US.txt") if l.strip()]
print(any(ipaddress.ip_address("14.1.64.1") in n for n in nets))

United States IP ranges: questions

How many IP addresses does United States have?

United States holds 1,606,591,392 IPv4 addresses in 70,617 blocks and 10,920 IPv6 prefixes, the 1st largest IPv4 holding of 239 countries (43.57% of all allocated IPv4). Compare it with other countries on the IP ranges by country page.

Which networks use the most United States IP addresses?

United States Department of Defense (DoD) (AS749, 205.4M addresses), Amazon.com, Inc. (AS16509, 155.8M addresses) and AT&T Enterprises, LLC (AS7018, 89.9M addresses). Look up any single address with the IP lookup tool.

How do I block all United States IP addresses?

Download the list above in the format of your firewall: iptables/ipset, nginx, Apache, ufw or MikroTik. Turn on "aggregate" to merge adjacent blocks into fewer rules. The raw list is at /Ranges/US.txt, one CIDR per line. To inspect a single block use the CIDR calculator.

Who assigns IP addresses in United States?

ARIN, the regional internet registry for North America. ProxySpace downloads its delegation file every day; the most recent United States allocation in it is 2026-11-06.

Are there free proxies in United States?

Yes, 3,166 in the current lists. See free United States proxies for the lists per protocol, refreshed every 20 minutes.