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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 |
| 512 |
| — |
| 2 |
| AS397776US | SUMMITBGP - County of Summit, Ohio | 512 | — | 2 |
| AS155029US | HOSTHATCH-AS-AP - HostHatch Korea | 512 | — | 1 |
| AS14707US | ABSHOU-ASN - American Bureau of Shipping | 512 | — | 2 |
| AS396868US | SMBC-CM - SMBC Capital Markets, Inc. | 512 | — | 2 |
| AS399140US | SINGAPORE-DC - Red Hat, Inc. | 512 | 1 | 3 |
| AS62733US | SOLANOCOUNTY - Solano County | 512 | — | 2 |
| AS27604US | SETONHILLUNIVERSITY - Seton Hill University | 512 | — | 1 |
| AS63263US | RETS-NA-GCC - RELX inc. | 512 | — | 2 |
| AS394171US | ONPOINTCCU - OnPoint Community Credit Union | 512 | — | 2 |
| AS40490US | AS-AFILIAS-CTRL2 - Afilias, Inc. | 512 | 1 | 3 |
| AS402766US | MARKVD-NET - Mark | 512 | 256 | 3 |
| AS62683US | PTC - PREFIL TEC, INC | 512 | — | 2 |
| AS40067US | NEWEGG - Newegg Inc. | 512 | — | 2 |
| AS398952US | AG-ASN - AMBRY GENETICS CORPORATION | 512 | — | 1 |
| AS36551US | COMPASSION-INTL-GMC1 - Compassion International, Inc. | 512 | — | 2 |
| AS395442US | HERITAGEBANK - Heritage Bank | 512 | — | 2 |
| AS13313US | BARNES-AND-NOBLE - Barnes & Noble Inc. | 512 | — | 2 |
| AS32368US | MOUSER-ELECTRONICS - mouser electronics | 512 | — | 2 |
| AS35851US | BANKERSBANKOFKANSAS - Bankers' Bank of Kansas | 512 | — | 2 |
| AS62498US | TGNA-WLTX - TEGNA Inc. | 512 | — | 2 |
| AS27634US | MICRODG-AS - Microdynamics Corporation | 512 | — | 2 |
| AS22805US | CNL-FINANCIAL-GROUP - CNL Financial Group Inc. | 512 | — | 2 |
| AS19768US | SCAN - SCAN Health Plan | 512 | — | 2 |
| AS397925US | REDEYE-ATL-DC2 - RedEye Network Solutions LLC | 512 | — | 2 |
| AS36768US | KOAT-TV - Hearst-Argyle Television, Inc. | 512 | — | 2 |
| AS3914US | KMHP-AS-ARIN - Keystone Mercy Health Plan | 512 | — | 2 |
| AS394498US | YMCA-OF-THE-NORTH - YMCA of the North | 512 | 1 | 3 |
| AS30367US | STRATEGIC-VALUE-PARTNERS - Strategic Value Partners | 512 | — | 2 |
| AS394918US | TBI-ASN-3 - TrueBlue, Inc. | 512 | — | 1 |
| AS54102US | FABFIBERNET - Fabulous Fiber LLC | 512 | 4.1K | 2 |
| AS46763US | RIEMER-BRAUNSTEIN - Riemer & Braunstein LLP | 512 | — | 2 |
| AS33535US | MONOXIDE - Monoxide Network LLC | 512 | 2 | 4 |
| AS1544US | DNIC-ASBLK-01534-01546 - Headquarters, USAISC | 512 | — | 2 |
| AS396017US | COMCAST-MES - Comcast Cable Communications, LLC | 512 | 1 | 3 |
| AS394805US | RELIAQUEST - ReliaQuest, LLC | 512 | — | 2 |
| AS21516US | ECH-2 - Ephrata Community Hospital | 512 | — | 2 |
| AS12218US | AMERICAN-INSTITUTES-FOR-RESEARCH - American Institutes for Research | 512 | — | 2 |
| AS36313US | LTICTASN01 - Lendingtools.com Inc. | 512 | — | 2 |
| AS396654US | VRSN-AC50-340 - VeriSign Global Registry Services | 512 | — | 2 |
| AS22263US | NRHSAS - Norman Regional Health System | 512 | — | 1 |
| AS27295US | LISD - Lewisville Independent School District | 512 | — | 1 |
| AS889US | DVFIBER-VT - Deerfield Valley Communications Union District | 512 | 65.5K | 2 |
| AS46519US | LMI - Lantheus Medical Imaging, Inc. | 512 | — | 2 |
| AS394025US | ATHOME - At Home Stores LLC | 512 | — | 2 |
| AS14105US | NO - Secure IP | 512 | — | 2 |
| AS399929US | MAA-ASN-01 - Mid-America Apartments, L.P. | 512 | — | 2 |