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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 | 3,138 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 210.9M | 20,988 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 113.7M | 639 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,222 |
| 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 | 368 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 48M | 3,578 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.7M | 1,934 |
| AS701US | UUNET - Verizon Business | 43.6M | 1,000 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.3M | 4,544 |
| SCRTC - South Central Rural Telecommunications Cooperative Inc. |
| 35.1K |
| — |
| 89 |
| AS3949US | NTTA-3946 - NTT America, Inc. | 34.8K | 1 | 73 |
| AS14905US | CENTURYLINK-LEGACY-EMBARQ-VACHVL - CenturyLink Communications, LLC | 34.8K | — | 10 |
| AS10823US | NETCARRIER - NetCarrier, Inc. | 34.8K | 65.5K | 20 |
| AS23528US | SPARKPOST - Bird.com Inc. | 34.8K | — | 80 |
| AS22408US | WKNET - West Ky Networks | 34.8K | — | 9 |
| AS23483US | SHASTACOE - Shasta County Office of Education | 34.8K | 4.1K | 17 |
| AS26223US | SILVERSTAR-TELEPHONE - Silver Star Communications | 34.8K | 65.6K | 58 |
| AS6307US | AMERICAN-EXPRESS - American Express Company | 34.6K | — | 121 |
| AS27382US | COLOSPACE - FirstLight Fiber, Inc. | 34.6K | — | 12 |
| AS398766US | TRICOLINK - TriCoLink, Inc. | 34.6K | 65.5K | 28 |
| AS1590US | DNIC-ASBLK-01550-01601 - United States Department of Defense (DoD) | 34.6K | — | 34 |
| AS32867US | LLINES-NET - Long Lines Internet | 34.3K | — | 9 |
| AS30444US | OFN - Ocala Fiber Network | 34.3K | — | 11 |
| AS46293US | MIDWEST-ENERGY-AND-COMMUNICATIONS - Midwest Energy & Communications | 34.3K | 65.5K | 8 |
| AS20054US | AS13832 - Oracle Corporation | 34K | 40.9K | 64 |
| AS36092US | CENTENE - Centene Corporation | 34K | — | 44 |
| AS16617US | COMMUNITYISP - CISP | 34K | — | 27 |
| AS17275US | FMAC-I-BILLING - Federal Home Loan Mortgage Corporation | 33.8K | — | 52 |
| AS36416US | CLACKESD - Clackamas Education Service District | 33.8K | 65.5K | 6 |
| AS18663US | UOP-AS - University of the Pacific | 33.8K | — | 3 |
| AS3375US | MCI-ASN - Verizon Business | 33.8K | — | 8 |
| AS62785US | AMAZON-FC - Amazon.com Services, LLC | 33.5K | — | 4 |
| AS26020US | STSCI-NET - Space Telescope Science Institute | 33.5K | — | 4 |
| AS27630US | AS-XFERNET - XFERNET | 33.5K | 65.5K | 16 |
| AS54680US | HPINC - HP Inc. | 33.5K | — | 4 |
| AS27258US | KAMOPOWER - KAMO Electric Cooperative, Inc. | 33.5K | 65.5K | 27 |
| AS1640US | TGTEL - Thacker-Grigsby Communications | 33.5K | — | 18 |
| AS27338US | OTELCO-AL - GoNetSpeed | 33.5K | — | 68 |
| AS745US | AFCONC-BLOCK2-AS - Air Force Systems Networking | 33.5K | — | 79 |
| AS36040US | YOUTUBE - Google LLC | 33.3K | 131.4K | 139 |
| AS4208US | THE-ISERV-COMPANY - The Iserv Company, LLC | 33.3K | — | 12 |
| AS22458US | NETSOURCE - CONVERGEONE HOLDINGS, INC. | 33.3K | 65.5K | 85 |
| AS46233US | EMC-159 - Eisenhower Medical Center | 33.3K | — | 3 |
| AS6220US | AS6220 - inContact Inc. | 33.3K | — | 87 |
| AS46964US | BROADINSTITUTE-AS - The Broad Institute, Inc. | 33.3K | — | 5 |
| AS395582US | GRM-NETWORK - Grand River Mutual Telephone Corporation | 33.3K | — | 37 |
| AS36734US | PAXIO-SFBA - Paxio Inc. | 33.3K | 2.2M | 16 |
| AS14299US | ADP1 - Automatic Data Processing, Inc. | 33.3K | — | 54 |
| AS12282US | GMA - Selectronics Corp. | 33K | 131.1K | 7 |
| AS19800US | GCPUD-ORG - Grant County Public Utility District | 33K | — | 4 |
| AS63473US | HOSTHATCH - HostHatch, LLC | 33K | 273 | 133 |
| AS10279US | WCCL-AS - West Carolina Communications, LLC | 33K | — | 129 |
| AS6372US | DCANET - DCANet | 33K | 65.5K | 4 |
| AS397630US | AS-BLAZINGSEO - Blazing SEO, LLC | 33K | — | 129 |
| AS19782US | INDIANAGIGAPOP - Indiana University | 33K | 65.5K | 4 |
| AS11847US | OTT - GoNetSpeed | 33K | 73.7K | 27 |