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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 | 3,139 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 211.2M | 21,186 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 113.7M | 639 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,242 |
| 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.
31,994 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 229 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 383 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 49.3M | 3,669 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.7M | 1,948 |
| AS701US | UUNET - Verizon Business | 43.6M | 998 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,373 |
| 1 |
| 2 |
| AS399037US | FB-01 - FOCUS Brands | 256 | — | 1 |
| AS22580US | GUARD - GUARD INSURANCE GROUP | 256 | — | 1 |
| AS401642US | CARVERAUTO - Carver Automation Corporation | 256 | 1 | 2 |
| AS398126US | LPSO - Computer Sales & Services, Inc. | 256 | — | 1 |
| AS398558US | EASTMS-MISSON-01 - East Mississippi Community College | 256 | — | 1 |
| AS12279US | LAYER-EIGHT - VertitechIT, Inc. | 256 | — | 1 |
| AS63461US | DFA-INTERNET - Dean Foods Company | 256 | — | 1 |
| AS62732US | BCC-BGP - Boston Coach Corp. | 256 | — | 1 |
| AS46714US | IPC-ATL-56-TELX - IP Communications LLC | 256 | — | 1 |
| AS16655US | HARTWICK-01 - Hartwick College | 256 | — | 1 |
| AS397885US | TUSSCO-ASN - Tuscaloosa County Commisssion | 256 | — | 1 |
| AS46827US | SPECTRA-LABORATORIES-EAST - Spectra Laboratories | 256 | — | 1 |
| AS56640US | BAIN-AND-COMPANY-INC-UNITED-KINGDOM BAIN AND COMPANY INC UNITED KINGDOM | 256 | — | 1 |
| AS18957US | TAXRESOURCES-1 - TaxAudit.com | 256 | — | 1 |
| AS399284US | LUYS - luYs, Inc. | 256 | 18 | 19 |
| AS32685US | AEG-VISION - AEG Vision | 256 | — | 1 |
| AS54851US | NEBH - New England Baptist Hospital | 256 | — | 1 |
| AS397060US | VIN-01 - Veterinary Information Network, Inc. | 256 | — | 1 |
| AS394711US | KORGRID - KorGrid, LLC | 256 | — | 1 |
| AS69US | UPENN-NETWORK-LAB - University of Pennsylvania | 256 | — | 1 |
| AS15357US | HCL-186-15357 - HARBIN CLINIC, LLC | 256 | — | 1 |
| AS397968US | BBC-ASN - SIMPLE CLOUD SOLUTION LLC | 256 | 1 | 2 |
| AS393943US | SECOENERGY - Sumter Electric Cooperative, Inc. | 256 | — | 1 |
| AS32253US | BECPL - Buffalo & Erie County Public Library | 256 | — | 1 |
| AS971US | PUREVOLTAGE - PureVoltage Hosting Inc. | 256 | 4.1K | 2 |
| AS393767US | PROTO-LABS - Proto Labs | 256 | — | 1 |
| AS398135US | NWNC - SKYWEB OF ILLINOIS, INC. | 256 | — | 1 |
| AS399802US | FIBERSMITH-CBLOCK-170-31-11 - The Fibersmith Company | 256 | — | 1 |
| AS14842US | BAUD-AS01 - Baudville, Inc. | 256 | — | 1 |
| AS26826US | OUSD-SOCAL - Orange Unified School District | 256 | — | 1 |
| AS393687US | DELAWARE-RIVER-AND-BAY-AUTHORITY - Delaware River and Bay Authority | 256 | — | 1 |
| AS394044US | TERRITORIAL - Bank of Hope | 256 | — | 1 |
| AS396057US | CUD-9305 - Credit Union of Denver | 256 | — | 1 |
| AS399722US | AS-MS-78065 - Blue Cross Blue Shield of Illinois or Blue Cross Blue Shield of Texas | 256 | — | 1 |
| AS396935US | RI-TELEPHONE-01 - Rhode Island Telephone, Inc. | 256 | — | 1 |
| AS7932US | NUMERIX - Numerix | 256 | — | 1 |
| AS30494US | FACTSET - FactSet Research Systems, Inc. | 256 | — | 1 |
| AS399972US | COMMUNITY-BANK-OF-MS - Community Bank | 256 | — | 1 |
| AS54184US | AS54184 - TenSpire Network | 256 | — | 1 |
| AS19415US | PAUL-BUNYAN-TECHNOLOGIES-01 - Paul Bunyan Technologies, LLC | 256 | 256 | 2 |
| AS401279US | FREECLOUD-01 - Free Cloud Information Technology Co., LTD | 256 | — | 1 |
| AS40825US | PAML-ASN - Pinnacle Asset Management, LP | 256 | — | 1 |
| AS40453US | GRESHAM-NET - City of Gresham | 256 | — | 1 |
| AS40721US | PABMC - Pennsylvania House of Representatives BMC | 256 | — | 1 |
| AS395884US | TBR01 - Tampa Bay Rays Baseball, Ltd. | 256 | — | 1 |
| AS12276US | SFMIX-MGMT - San Francisco Metropolitan Internet Exchange (SFMIX) | 256 | 17 | 3 |