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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. | 217.9M | 23,731 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,300 |
| 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.
32,144 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 | 3,838 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 1,995 |
| AS701US | UUNET - Verizon Business | 43.6M | 995 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,313 |
| 36.9K |
| 65.5K |
| 4 |
| AS20248US | TAKE2 - Take 2 Hosting, Inc. | 36.9K | — | 5 |
| AS26253US | SCINTERNET - South Central Communications, Inc. | 36.9K | 131.1K | 18 |
| AS63448US | HOLSTON-1 - HOLSTON ELECTRIC COOPERATIVE | 36.6K | — | 31 |
| AS27087US | DNIC-ASBLK-27032-27159 - United States Department of Defense (DoD) | 36.6K | — | 31 |
| AS22781US | STRTEC - Strong Technology, LLC. | 36.6K | 13.3K | 37 |
| AS33619US | AMD-MARKHAM - Advanced Micro Devices, Inc. | 36.6K | — | 96 |
| AS33667US | CMCS - Comcast Cable Communications, LLC | 36.6K | 524.3K | 93 |
| AS36007US | KAMATERA - Kamatera, Inc. | 36.6K | 19 | 159 |
| AS16567US | NETRIX-16567 - Netrix LLC | 36.4K | 65.5K | 41 |
| AS397731US | ELITEWORK-01 - EliteWork LLC | 36.4K | — | 11 |
| AS398704US | STACKSINC-BACKBONE - STACKS INC | 36.4K | 16.4K | 106 |
| AS393856US | WGELD-ASN - City of Westfield (Gas & Electric Light Department) | 36.4K | — | 40 |
| AS36224US | HCLTA94085 - HCL AMERICA INC | 36.4K | 2 | 100 |
| AS11620US | SUCCEED-NET - Succeed.Net | 36.4K | — | 28 |
| AS401362US | HOST4NERD - HOST4NERD LLC | 36.1K | — | 141 |
| AS30383US | GENERAL-MOTORS-CORPORATION - General Motors LLC | 36.1K | 1K | 131 |
| AS397142US | FORT-COLLINS-CONNEXION - City of Fort Collins | 36.1K | 67.6K | 23 |
| AS27176US | DATAWAGON - DataWagon LLC | 36.1K | 525.1K | 114 |
| AS396001US | TACO-396001 - City of Tacoma | 36.1K | — | 12 |
| AS29930US | TWRS-CBB - Towerstream I, Inc. | 36.1K | — | 11 |
| AS17223US | DATABANK-LATISYS - Latisys-Chicago, LLC | 36.1K | 65.5K | 32 |
| AS27066US | DNIC-ASBLK-27032-27159 - United States Department of Defense (DoD) | 36.1K | 8 | 119 |
| AS11790US | RANDOMHOUSE - Random House, Inc. | 36.1K | — | 18 |
| AS4913US | NET-CPRK - Speedcast Communications, Inc | 35.9K | — | 65 |
| AS26844US | PACTIV - Pactiv LLC | 35.8K | — | 6 |
| AS32472US | LEXIS2-AS - RELX inc. | 35.8K | — | 10 |
| AS62887US | WHITESKY-COMMUNICATIONS - WhiteSky Communications, LLC. | 35.8K | 275 | 60 |
| AS40749US | CDELIGHTBAND - CLARKSVILLE DEPARTMENT OF ELECTRICITY | 35.8K | — | 19 |
| AS26425US | EXELON-CORPORATION - Exelon Corporation | 35.8K | — | 28 |
| AS36001US | BERTRAM-COMMUNICATIONS-LLC - Bertram Communications LLC | 35.8K | 262.1K | 15 |
| AS11179US | ARYAKA-ARIN - Aryaka Networks, Inc. | 35.8K | 3 | 143 |
| AS26223US | SILVERSTAR-TELEPHONE - Silver Star Communications | 35.6K | 65.6K | 61 |
| AS27512US | STATERI - State of Rhode Island | 35.3K | — | 3 |
| AS326US | DNIC-ASBLK-00306-00371 - United States Department of Defense (DoD) | 35.3K | — | 35 |
| AS40020US | FARMERS-TELECOMMUNICATIONS-COOPERATIVE-INC - Farmers Telecommunications Cooperative, Inc. | 35.3K | 65.5K | 51 |
| AS32723US | ARCHTOP-FIBER - Archtop Fiber | 35.3K | 65.6K | 57 |
| 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 |
| AS33003US | TRI-COUNTY-CORE - The Tri-County Telephone Association, Inc. | 35.1K | 65.5K | 21 |
| AS32990US | ECE-FIBER - East Central Energy | 35.1K | 73.7K | 13 |
| AS397115US | ELECTRIC-BOAT-CORPORATION - Electric Boat Corporation | 35.1K | — | 48 |
| AS14905US | CENTURYLINK-LEGACY-EMBARQ-VACHVL - CenturyLink Communications, LLC | 34.8K | — | 10 |
| AS22408US | WKNET - West Ky Networks | 34.8K | — | 9 |
| AS27323US | SERVERSTADIUM - Wowrack.com | 34.8K | 514 | 94 |
| AS1590US | DNIC-ASBLK-01550-01601 - United States Department of Defense (DoD) | 34.6K | — | 34 |