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How United States ranks worldwide on dormant space, the transfer market, routing security and address density.
PeeringDB-registered presence.
APNIC-measured end-user deployment.
Clean prefixes (valid RPKI + IRR, no mismatch).
Cumulative IPv4, IPv6, and ASN allocations to United States over time.
The largest autonomous systems registered to United States by IPv4 footprint.
| AS | Holder | IPv4 | Prefixes |
|---|---|---|---|
| AS749US | DNIC-AS-00749 - United States Department of Defense (DoD) | 227.5M | 3,133 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 218M | 24,346 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,303 |
| AS721US | DNIC-ASBLK-00721-00726 - United States Department of Defense (DoD) |
United States against its land-border neighbours on IPv4, IPv6, AS numbers and per-capita density.
Share of announced address space covered by valid Route Origin Authorizations.
32,168 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 233 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 437 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.5M | 3,885 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 1,996 |
| AS701US | UUNET - Verizon Business | 43.6M | 994 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,357 |
| 768 |
| — |
| 3 |
| AS14903US | PILOT-CATASTROPHE - Pilot Catastrophe Services, Inc. | 768 | — | 2 |
| AS32850US | CLARITEV-VA - Claritev Corporation | 768 | — | 3 |
| AS32130US | BRIGHT-HORIZONS - Bright Horizons | 768 | — | 3 |
| AS396145US | EXACTSCIENCES - Exact Sciences Corporation | 768 | — | 3 |
| AS31853US | EMS-AS - Express Messenger Systems, Inc. | 768 | — | 3 |
| AS54203US | NETPROTECT-SP - Strong Technology, LLC. | 768 | 256 | 4 |
| AS400733US | PDS-RW-ASN-01 - Pari Data Systems Inc. | 768 | — | 3 |
| AS19536US | DIRECTV-SDWAN-DXC - DIRECTV, LLC | 768 | — | 3 |
| AS197640US | NETPROTECT Overplay, Inc | 768 | — | 3 |
| AS54022US | KMTEL-NET - K & M Telephone Company, Inc | 768 | — | 2 |
| AS19214US | CENTAURI-COMMUNICATIONS-COM - Centauri Communications | 768 | 65.5K | 3 |
| AS395987US | SEU-MORRISTOWN - Saint Elizabeth University | 768 | — | 3 |
| AS60527US | XSOLLA-AS Xsolla (USA), Inc | 768 | — | 3 |
| AS399953US | METHOWNET-01 - Okanogan County Electric Cooperative, Inc. | 768 | — | 3 |
| AS11783US | BROOK-LAW - Brooklyn Law School | 768 | — | 2 |
| AS30260US | NOBEL-129-30260 - NobelBiz, Inc. | 768 | — | 2 |
| AS18440US | NCCI - National Council on Compensation Insurance, Inc. | 768 | — | 3 |
| AS36393US | PFELJ - Pfizer Inc. | 768 | — | 2 |
| AS35947US | THRIVE-CA1 - Thrive Operations, LLC | 768 | — | 3 |
| AS394930US | CUSTBANK-AS - CUSTOMERS BANK | 768 | — | 3 |
| AS39966US | GBPHBUMC - General Board of Pensions and Health Benefits | 768 | — | 3 |
| AS399997US | ARCONIC-CORP - Arconic | 768 | — | 3 |
| AS16785US | USANA-INC - USANA Inc | 768 | — | 2 |
| AS14058US | PCT-AS01 - PointClick Technologies, LLC | 768 | 4.1K | 3 |
| AS3557US | ISC-AS - Internet Systems Consortium, Inc. | 768 | 3 | 4 |
| AS400846US | TAMPA-COLO-ASN-PRIMARY - Tampa Co-Op | 768 | 257 | 4 |
| AS20280US | CORPUS-CHRISTI-ISD-AS1 - Corpus Christi ISD | 768 | — | 2 |
| AS14632US | BIA30ASN - Brown Advisory | 768 | — | 3 |
| AS33755US | VALORNODE - Valor Holdings LLC | 768 | 13 | 16 |
| AS12185US | ASN1 - Thompson, Siegel & Walmsley LLC | 768 | — | 3 |
| AS19161US | APOG-UNCC-NORTH - Apogee Telecom Inc. | 768 | — | 2 |
| AS20075US | RFERL-ORG - Radio Free Europe | 768 | — | 3 |
| AS62614US | NETWOLVES-NETWORK-SERVICES - NetWolves Network Services LLC | 768 | — | 3 |
| AS53840US | AS-CCI1 - CENTRAL COAST INTERNET | 768 | — | 3 |
| AS16639US | IRONBOW-ASN - Iron Bow Technologies, LLC | 768 | — | 3 |
| AS18628US | NYMEX - NEW YORK MERCANTILE EXCHANGE | 768 | — | 3 |
| AS62998US | USAZY - USAZY INC. | 768 | — | 3 |
| AS398434US | INTERNET-314 - Internet 3.14 | 768 | — | 3 |
| AS401370US | CALYX-NETWORKS - CALYX NETWORKS | 768 | 2 | 5 |
| AS11470US | RSNA-ASN - Radiological Society of North America | 768 | — | 3 |
| AS400155US | MHTELE-01 - Manchester-Hartland Telephone Company | 768 | — | 2 |
| AS399009US | FACHQINTERNET - FANUC America Corporation | 768 | — | 2 |
| AS20408US | NTTA - North Texas Tollway Authority | 768 | — | 3 |
| AS400608US | PETDW-MERGECO-01 - Bhp Billiton Petroleum (deepwater) Inc. | 768 | — | 3 |
| AS30620US | CO-DATACENTER - APPLIED SYSTEMS, INC | 768 | — | 3 |
| AS53593US | ZCONNECT-01 - zConnect | 768 | — | 3 |