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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 | 3,134 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 219M | 23,681 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 645 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,370 |
| 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.
32,364 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 | 3,914 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 45M | 2,047 |
| AS701US | UUNET - Verizon Business | 43.6M | 996 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.8M | 4,503 |
| 512 |
| 2 |
| 4 |
| AS395410US | USALLIANCE-FCU-411 - USAlliance Federal Credit Union | 512 | — | 2 |
| AS53674US | KYVONAS-01 - SupportCloud, LLC | 512 | — | 2 |
| AS398447US | OHANACRAFT - OHANACRAFT, LLC | 512 | 4 | 6 |
| AS64223US | MITCON - MITCON LLC | 512 | — | 2 |
| AS63151US | CPSL-ASN - The Children's Place | 512 | — | 2 |
| AS54514US | JFNA - Jewish Federations of North America, Inc. | 512 | — | 2 |
| AS393567US | AS-EQX-ATLC-01 - Atlanticus Holdings Corporation | 512 | — | 2 |
| AS395901US | KUDU-SYSTEMS - Kudu Systems, LLC | 512 | — | 2 |
| AS54853US | MTL-371-54853 - Impact Internet | 512 | 65.5K | 3 |
| AS397080US | MEDPOINT - MedPOINT Management | 512 | — | 2 |
| AS18920US | HEI - Hawaiian Electric Industries, Inc. | 512 | — | 2 |
| AS14076US | AS14076 - Secure Network USA, LLC | 512 | — | 2 |
| AS54496US | JFBC-AS - Johnson Ferry Baptist Church, Inc. | 512 | 2 | 4 |
| AS395324US | NETBLK-CBOCS-HO-NET - Cracker Barrel Old Country Store, Inc. | 512 | — | 2 |
| AS393677US | HLS - Hematogenix Laboratory Services, LLC | 512 | — | 2 |
| AS402127US | TAKOYAKI-NET - Project Takoyaki Technologies | 512 | 4.1K | 3 |
| AS11379US | WHG11379 - Wyndham Hotel Group, LLC | 512 | — | 2 |
| AS54469US | COV-ISP - City of Vacaville | 512 | — | 2 |
| AS31779US | DEN-SPG-ASN - Denny's, Inc. | 512 | — | 2 |
| AS7767US | EB - Encyclopaedia Britannica | 512 | 1 | 3 |
| AS13710US | SYSTEMS-METHODS - Systems & Methods, Inc. | 512 | — | 1 |
| AS36046US | BOTC - BOTC | 512 | — | 2 |
| AS2021US | UNISYS-INT - Unisys Corporation | 512 | — | 2 |
| AS394651US | AKUNA-BGP - Akuna Capital LLC | 512 | — | 2 |
| AS19364US | SEBAGO-FIBER - Sebago Fiber & Wifi, LLC | 512 | 4.1K | 3 |
| AS46192US | SWBC-ASN - SWBC | 512 | — | 2 |
| AS33536US | KOUNT-INC - Kount, Inc. | 512 | — | 2 |
| AS393546US | ARUP - ARUP LABORATORIES | 512 | — | 1 |
| AS31800US | DALNET - DALnet | 512 | — | 2 |
| AS401138US | MORSECOMMUNICATIONS - Morse Communications, Inc. | 512 | 1 | 3 |
| AS401668US | ROGERSNETWORKS - IPM Computers LLC | 512 | — | 2 |
| AS22844US | TRADERJOE - TRADER JOE'S COMPANY | 512 | — | 2 |
| AS396997US | AS-BLOCKSTREAM - Blockstream USA Corporation | 512 | 3 | 5 |
| AS54365US | DIGITAL-INNOVATIONS-BY-RYAN - Digital Innovations by Ryan | 512 | 256 | 3 |
| AS16384US | SMCVT - St Michael's College | 512 | — | 2 |
| AS29746US | S3PL-ASN - S3 Partners LLC | 512 | — | 2 |
| AS396041US | HFC-ASN - HollyFrontier Corporation | 512 | — | 2 |
| AS393716US | INTRADA-AS000 - Intrada Technologies, Inc | 512 | — | 1 |
| AS36567US | WAPT-TV - Hearst-Argyle Television, Inc. | 512 | — | 2 |
| AS401165US | COLOVORE-01 - Colovore LLC | 512 | — | 2 |
| AS4900US | ASN1 - Montgomery County Hospital District | 512 | — | 2 |
| AS29996US | APORTER - Arnold & Porter Kaye Scholer LLP | 512 | — | 2 |
| AS394981US | CONTINENTAL-RESOURCES-INC-2 - Continental Resources, Inc. | 512 | — | 2 |
| AS40205US | PRISMA-ASN-1 - PRISMA HOLDINGS, LLC | 512 | 3 | 5 |
| AS400781US | XTC-NA-ASN-01 - XenTegra Connect | 512 | — | 2 |
| AS40360US | PANERA - PANERA BREAD COMPANY | 512 | — | 2 |