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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 | 24,540 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,305 |
| 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.
32,187 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 232 |
| 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 | 2,002 |
| AS701US | UUNET - Verizon Business | 43.6M | 993 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,362 |
| 256 |
| — |
| 1 |
| AS19728US | HUGHESBROS - Hughes Brothers Inc. | 256 | — | 1 |
| AS62803US | UTDAS01 - UPTODATE, Inc. | 256 | — | 1 |
| AS400014US | PRISEDA-ABQ - Priseda LLC | 256 | — | 1 |
| AS32730US | NAHQPU - LG CNS America Inc. | 256 | — | 1 |
| AS22991US | SPE-199-26-202 - SOCIETY OF PETROLEUM ENGINEERS (SPE), INC. | 256 | — | 1 |
| AS397971US | MISD-28-ASN-01 - Midlothian Independent School District | 256 | — | 1 |
| AS397516US | GO-DADDY-COM-LLC - GoDaddy.com, LLC | 256 | 1 | 2 |
| AS396280US | CASENETLLC - Casenet, LLC | 256 | — | 1 |
| AS62830US | RIOT-CORP-SVCS - RiotGames | 256 | — | 1 |
| AS401178US | UNEPIC-NETWORKS - Unepic Networks | 256 | — | 1 |
| AS53693US | RAA-NYC-NET - Ralph Appelbaum Associates, Inc. | 256 | — | 1 |
| AS23211US | JCOM-2 - J2 Cloud Services, LLC | 256 | — | 1 |
| AS13547US | PORTER-HOSPITAL - Porter Hospital | 256 | — | 1 |
| AS30443US | GOLDEN-STATE-OVERNIGHT-DELIVERY-SERVICE-INC - Golden State Overnight Delivery Service, Inc. | 256 | — | 1 |
| AS29785US | DACSIX-CENTRAL - DACS-IX | 256 | 65 | 6 |
| AS401657US | PHMV-AS-1 - DuBois Regional Medical Center | 256 | — | 1 |
| AS62934US | FFBF-PROD01 - First Federal Bank of Florida | 256 | — | 1 |
| AS32426US | WV-SCHOOL-OF-OSTEOPATHIC-MEDICINE - WV School of Osteopathic Medicine | 256 | — | 1 |
| AS32447US | MARTI-AS - MARTIN RESOURCE MANAGEMENT CORP. | 256 | — | 1 |
| AS396911US | DPLO-411SSFLT - Diplomat Pharmacy, Inc | 256 | — | 1 |
| AS30071US | OCCAID - TowardEX Technologies International, Inc. | 256 | — | 1 |
| AS27490US | AGRACEHOSPICE-MSN-DR - Agrace Hospicecare Inc | 256 | — | 1 |
| AS394750US | SMKTG - Universal Furniture International Inc. | 256 | — | 1 |
| AS400669US | RELIABLE-ISP-01 - ReliableNetwerks, Inc. | 256 | 65.5K | 2 |
| AS20389US | 20389 - OneAZ Credit Union | 256 | — | 1 |
| AS22050US | SDLANCPA - School District of Lancaster | 256 | — | 1 |
| AS393726US | ASGN - On Assignment, Inc. | 256 | — | 1 |
| AS40700US | WILINE - WiLine Networks Inc. | 256 | — | 1 |
| AS14452US | CMA-USA - CMA, Inc. | 256 | — | 1 |
| AS21764US | CFCU-CORP - Clearview Federal Credit Union | 256 | — | 1 |
| AS402041US | ASN-FIBERFED-GEO1 - Trinity Network Solutions | 256 | — | 1 |
| AS62526US | AXCELIS-TECHNOLOGIES - AXCELIS TECHNOLOGIES | 256 | — | 1 |
| AS30098US | INFB-ASN - Farm Bureau Insurance | 256 | — | 1 |
| AS40721US | PABMC - Pennsylvania House of Representatives BMC | 256 | — | 1 |
| AS400151US | SPARC-BROOKS-BROTHERS - BB OPCO LLC | 256 | — | 1 |
| AS19841US | ISNS1 - ISNS | 256 | — | 1 |
| AS63253US | USSFCU-AS - United States Senate Federal Credit Union | 256 | — | 1 |
| AS12276US | SFMIX-MGMT - San Francisco Metropolitan Internet Exchange (SFMIX) | 256 | 17 | 3 |
| AS400853US | KEYSOURCE-ASNKAL58 - KeySource Acquisition, LLC | 256 | — | 1 |
| AS396078US | DIGITALREALTY-IT-01 - Digital Realty Trust, L.P. | 256 | — | 1 |
| AS401830US | KEYSTONE-COLLECTIONS-GROUP-01 - Keystone Collections Group | 256 | — | 1 |
| AS396042US | NEWSDAY - Newsday Media Group | 256 | — | 1 |
| AS18957US | TAXRESOURCES-1 - TaxAudit.com | 256 | — | 1 |
| AS54684US | PPD-WILMINGTON - PPDI | 256 | — | 1 |
| AS33644US | OSUFCUASN - Oregon State Credit Union | 256 | — | 1 |
| AS6955US | DANDH - D&H Distributing Company | 256 | — | 1 |