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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) | 227.4M | 3,133 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 217.9M | 24,372 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 643 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.7M | 1,322 |
| 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.
32,235 autonomous systems registered to United States. Click an AS for detail.
| 72.9M |
| 229 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 437 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.6M | 3,906 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.9M | 2,006 |
| AS701US | UUNET - Verizon Business | 43.6M | 993 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.7M | 4,275 |
| EMC-159 - Eisenhower Medical Center |
| 33.3K |
| — |
| 3 |
| AS10279US | WCCL-AS - West Carolina Communications, LLC | 33.3K | — | 130 |
| AS14299US | ADP1 - Automatic Data Processing, Inc. | 33.3K | — | 54 |
| AS13759US | WILKES-MULTI-HOME1 - Wilkes University | 33.3K | — | 3 |
| AS745US | AFCONC-BLOCK2-AS - Air Force Systems Networking | 33.3K | — | 78 |
| AS36734US | PAXIO-SFBA - Paxio Inc. | 33.3K | 2.2M | 16 |
| AS398766US | TRICOLINK - TriCoLink, Inc. | 33.3K | 65.5K | 25 |
| AS22458US | NETSOURCE - CONVERGEONE HOLDINGS, INC. | 33.3K | 65.5K | 85 |
| AS1640US | TGTEL - Thacker-Grigsby Communications | 33.5K | — | 18 |
| AS54680US | HPINC - HP Inc. | 33.5K | — | 4 |
| AS26020US | STSCI-NET - Space Telescope Science Institute | 33.5K | — | 4 |
| AS27258US | KAMOPOWER - KAMO Electric Cooperative, Inc. | 33.5K | 65.5K | 27 |
| AS6220US | AS6220 - inContact Inc. | 33.5K | — | 88 |
| AS13446US | AS-NETZERO - Netzero,INC. | 33.5K | — | 25 |
| AS3375US | MCI-ASN - Verizon Business | 33.8K | — | 8 |
| AS18663US | UOP-AS - University of the Pacific | 33.8K | — | 3 |
| AS36416US | CLACKESD - Clackamas Education Service District | 33.8K | 65.5K | 6 |
| AS23158US | ETEX-COMMUNICATIONS - ETEX COMMUNICATIONS, LLC | 33.8K | — | 29 |
| AS27338US | OTELCO-AL - GoNetSpeed | 33.8K | — | 69 |
| AS11994US | CZIO-ASN - Cruzio | 34K | — | 13 |
| AS20054US | AS13832 - Oracle Corporation | 34K | 40.9K | 64 |
| AS16617US | COMMUNITYISP - CISP | 34K | — | 27 |
| AS6307US | AMERICAN-EXPRESS - American Express Company | 34K | — | 119 |
| AS27065US | DNIC-ASBLK-27032-27159 - United States Department of Defense (DoD) | 34K | 3 | 62 |
| AS17275US | FMAC-I-BILLING - Federal Home Loan Mortgage Corporation | 34K | — | 53 |
| AS17310US | BVU-2 - Point Broadband Fiber Holding, LLC | 34.3K | — | 11 |
| AS53667US | PONYNET - FranTech Solutions | 34.3K | 776.5K | 75 |
| AS30444US | OFN - Ocala Fiber Network | 34.3K | — | 11 |
| AS32867US | LLINES-NET - Long Lines Internet | 34.3K | — | 9 |
| AS27630US | AS-XFERNET - XFERNET | 34.6K | 65.5K | 20 |
| AS27382US | COLOSPACE - FirstLight Fiber, Inc. | 34.6K | — | 12 |
| AS6282US | FONL-6282 - Fiber Optical Network LLC | 34.6K | — | 46 |
| AS36411US | GEN-AS2 - Google LLC | 34.6K | — | 33 |
| AS30432US | STRATA-NETWORKS - STRATA NETWORKS | 34.6K | 65.5K | 16 |
| AS1590US | DNIC-ASBLK-01550-01601 - United States Department of Defense (DoD) | 34.6K | — | 34 |
| AS395092US | SHOCK-1 - Shock Hosting LLC | 34.6K | 4.1K | 89 |
| AS22408US | WKNET - West Ky Networks | 34.8K | — | 9 |
| AS27323US | SERVERSTADIUM - Wowrack.com | 34.8K | 514 | 94 |
| AS33003US | TRI-COUNTY-CORE - The Tri-County Telephone Association, Inc. | 35.1K | 65.5K | 21 |
| AS27176US | DATAWAGON - DataWagon LLC | 35.1K | 525.1K | 110 |
| AS32990US | ECE-FIBER - East Central Energy | 35.1K | 73.7K | 13 |
| AS397115US | ELECTRIC-BOAT-CORPORATION - Electric Boat Corporation | 35.1K | — | 48 |
| AS29894US | SCRTC - South Central Rural Telecommunications Cooperative Inc. | 35.1K | 1 | 90 |
| AS23528US | SPARKPOST - Bird.com Inc. | 35.1K | — | 81 |
| AS23483US | SHASTACOE - Shasta County Office of Education | 35.1K | 4.1K | 18 |
| AS40020US | FARMERS-TELECOMMUNICATIONS-COOPERATIVE-INC - Farmers Telecommunications Cooperative, Inc. | 35.3K | 65.5K | 51 |
| AS32723US | ARCHTOP-FIBER - Archtop Fiber | 35.3K | 65.6K | 58 |