United States
IP address space, AS numbers and the largest networks registered in United States, based on the delegation records of the regional internet registries.
IPv4 addresses
1.6B
70,201 blocks
IPv6 allocations
10,832
AS numbers
32,015
Routed AS numbers
11,676
Largest networks in United States
By announced prefixes| AS | Name | IPv4 prefixes | IPv6 prefixes |
|---|---|---|---|
| AS22773 | ASN-CXA-ALL-CCI-22773-RDC Cox Communications Inc. | 4,931 | 1,456 |
| AS13335 | CLOUDFLARENET Cloudflare, Inc. | 2,629 | 3,057 |
| AS20115 | CHARTER-20115 Charter Communications LLC | 2,408 | 2,325 |
| AS11492 | CABLEONE CABLE ONE, INC. | 4,638 | 72 |
| AS7155 | VIASAT-SP-BACKBONE ViaSat,Inc. | 4,346 | 4 |
| AS6167 | CELLCO-PART Verizon Business | 2,174 | 1,670 |
| AS31898 | ORACLE-BMC-31898 Oracle Corporation | 2,787 | 1,005 |
| AS36352 | AS-COLOCROSSING HostPapa | 3,252 | 27 |
| AS14593 | SPACEX-STARLINK Space Exploration Technologies Corporation | 2,159 | 1,093 |
| AS20473 | AS-VULTR The Constant Company, LLC | 1,848 | 1,365 |
| AS7029 | WINDSTREAM Windstream Communications LLC | 2,934 | 266 |
| AS6079 | RCN-AS RCN | 2,641 | 137 |
| AS32098 | TRANSTELCO-INC Transtelco Inc | 492 | 2,130 |
| AS36183 | AKAMAI-AS Akamai Technologies, Inc. | 495 | 1,647 |
| AS14618 | AMAZON-AES Amazon.com, Inc. | 1,448 | 660 |
| AS398781 | OSL-188 OCULUS NETWORKS INC | 2,075 | 0 |
| AS714 | APPLE-ENGINEERING Apple Inc. | 1,571 | 452 |
| AS7979 | SERVERS-COM Servers.com, Inc. | 1,958 | 39 |
| AS11776 | ATLANTICBB-JOHNSTOWN Breezeline | 1,922 | 19 |
| AS3257 | GTT-BACKBONE GTT Communications Inc. | 1,816 | 80 |
| AS21859 | ZEN-ECN Zenlayer Inc | 1,713 | 160 |
| AS54113 | FASTLY Fastly, Inc. | 621 | 1,232 |
| AS16625 | AKAMAI-AS Akamai Technologies, Inc. | 1,834 | 3 |
| AS7459 | GRANDECOM-AS1 Grande Communications Networks, LLC | 1,742 | 6 |
| AS19551 | INCAPSULA Incapsula Inc | 916 | 730 |
| AS2914 | NTT-DATA-2914 NTT America, Inc. | 1,607 | 10 |
| AS20057 | ATT-MOBILITY-LLC-AS20057 AT&T Enterprises, LLC | 1,449 | 161 |
| AS15169 | GOOGLE Google LLC | 1,235 | 176 |
| AS29802 | HVC-AS HIVELOCITY, Inc. | 1,215 | 173 |
| AS19901 | BRIGHTSPEED Brightspeed | 1,313 | 51 |
Delegations by registry: ARIN 76,976, RIPE 3,602, APNIC 450, LACNIC 5. Updated 2026-10-05.