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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) | 227.7M | 3,133 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 219M | 23,661 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 645 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,361 |
| 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.
32,363 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 236 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 439 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.8M | 3,911 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 45M | 2,046 |
| AS701US | UUNET - Verizon Business | 43.6M | 996 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.8M | 4,490 |
| 768 |
| — |
| 2 |
| AS7324US | IFAX-ASN-1 - iFAX Solutions, Inc. | 768 | 16 | 4 |
| AS11051US | CYBERVERSE - Evocative, Inc. | 768 | — | 3 |
| AS13344US | NETEX-INC - NetEx Inc. | 768 | — | 3 |
| AS10721US | THEAN8 - The Andersons Inc | 768 | — | 3 |
| AS16711US | EHI-NA-AS-2 - Enterprise Holdings, Inc. | 768 | 2 | 5 |
| AS395982US | WKMC-ASN - Willis-Knighton Medical Center | 768 | — | 3 |
| AS54651US | BLACK-DUCK-SOFTWARE-01 - Black Duck Software, Inc. | 768 | — | 2 |
| AS53528US | SHARP-ASN - Sharp Electronics Corporation | 768 | — | 3 |
| AS14121US | CIBC-WORLD-MARKETS - CIBC World Markets | 768 | — | 3 |
| AS10563US | ROCHELLEUTILITIES - Rochelle Municipal Utilities | 768 | — | 3 |
| AS27575US | PROVAK - Providence Hospital | 768 | — | 3 |
| AS36677US | KATUN-AS-1 - Katun Corporation | 768 | — | 2 |
| AS30532US | 3310-617INTERNET - Healthcare Realty Trust, Inc. | 768 | — | 3 |
| AS400906US | AS-MINO - Mino Network LLC | 768 | — | 3 |
| AS12144US | CLOUD-GRID - Cloud Grid Networks | 768 | — | 3 |
| AS398170US | WPAFN - WPA Fiber Network LLC | 768 | 65.5K | 3 |
| AS15062US | MERIDIAN-BUSINESS-CENTERS - Meridian Business Centers | 768 | — | 2 |
| AS14776US | YAHOO - Yahoo Holdings Inc. | 768 | 1 | 4 |
| AS11307US | 6750REI - Recreational Equipment Inc. | 768 | — | 3 |
| AS401305US | NIL - NIL Investment Link LLC | 768 | — | 3 |
| AS19111US | NBTY1911 - The Nature's Bounty Co. | 768 | — | 3 |
| AS40955US | REDHAT-DC-BOS2 - Red Hat, Inc. | 768 | 1 | 3 |
| AS22535US | EPLINC - EPL INC | 768 | — | 3 |
| AS397994US | XACTLY-01 - Xactly Corporation | 768 | 2 | 5 |
| AS36171US | STRASMORE - Strasmore, Inc. | 768 | 1 | 4 |
| AS397417US | SCWA - Suffolk County Water Authority | 768 | — | 2 |
| AS40422US | PACIOLAN - Paciolan, LLC | 768 | — | 3 |
| AS400007US | OWNADTECH - OwnAdtech INC | 768 | — | 3 |
| AS19319US | CCN-DMZ - Bonneville Power Administration | 768 | — | 3 |
| AS55163US | LINKEDIN - LinkedIn Corporation | 768 | 1 | 4 |
| AS29817US | LCB-ARIN-113 - LAKE CITY BANK | 768 | — | 3 |
| AS54192US | MONTEBELLO-USD - Montebello Unified School District | 768 | — | 2 |
| AS14020US | LONGWOOD-1 - Longwood Gardens Inc. | 768 | — | 3 |
| AS397283US | ROCKETNODE - SPARKED HOST LLC | 768 | — | 2 |
| AS15017US | MUFSD-ASN-01 - Malverne Union Free School District | 768 | — | 3 |
| AS11394US | CITYOFRICHARDSON-AS - City of Richardson | 768 | — | 3 |
| AS12287US | AS-AFILIAS-CTRL1 - Afilias, Inc. | 768 | 1 | 4 |
| AS394993US | SCVTA - Santa Clara Valley Transportation Authority | 768 | — | 3 |
| AS13412US | VULCAN-LLC - Vulcan LLC | 768 | — | 3 |
| AS26447US | SHUTTERFLY - Shutterfly, LLC | 768 | — | 3 |
| AS4367US | SECSTATE-CA-GOV - California Secretary of State | 768 | — | 3 |
| AS63404US | AGIOS - Agios Pharmaceuticals, Inc. | 768 | — | 3 |
| AS22785US | GLACIER-BANCORP-INC - GLACIER BANCORP INC | 768 | — | 3 |
| AS10944US | ABAG-10944 - Association of Bay Area Governments | 768 | — | 3 |
| AS26694US | ADMIS-AS - Adm Investor Services, Inc | 768 | — | 3 |
| AS40226US | GLOBALFCU - Global Credit Union | 768 | — | 3 |