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How United States ranks worldwide on dormant space, the transfer market, routing security and address density.
PeeringDB-registered presence.
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. | 218.1M | 24,630 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,307 |
| 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.
32,219 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 233 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 437 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.5M | 3,891 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 2,002 |
| AS701US | UUNET - Verizon Business | 43.6M | 993 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,357 |
| 256 |
| — |
| 1 |
| AS14766US | UKMAGDIA-BT-LUM - Magnetar Capital LLC | 256 | 1 | 2 |
| AS399563US | BUNN-O-001 - BUNN-O-MATIC CORPORATION | 256 | — | 1 |
| AS401766US | THE-LOT - Studio Lending Group, LLC | 256 | — | 1 |
| AS46468US | AMGH-DFWDC - Air Medical Group Holdings | 256 | — | 1 |
| AS393334US | CCSD-ASN-201 - Camden City School District | 256 | — | 1 |
| AS393254US | DTG-LAS-VEGAS-MANAGER - DTG Las Vegas Manager, LLC | 256 | — | 1 |
| AS393965US | ENDLAYER - EndLayer, LLC | 256 | — | 1 |
| AS38439US | ZFSRENT-38439 - ZFS.RENT LLC | 256 | 7 | 8 |
| AS26631US | GUNN-VAL-HOSP - Gunnison Valley Hospital | 256 | — | 1 |
| AS396898US | BMG-ASN - Capital City Home Loans | 256 | — | 1 |
| AS398899US | ECLINICALWORKS-CORP - ECLINICALWORKS, LLC | 256 | — | 1 |
| AS47019US | EGI - Ergonomic Group Inc. | 256 | — | 1 |
| AS14623US | LCU-NET - Lubbock Christian University | 256 | — | 1 |
| AS36036US | M-FINANCIAL - M Financial Group | 256 | — | 1 |
| AS401733US | WTS-MSP - Wachter Technology Solutions | 256 | — | 1 |
| AS399134US | FF - Fitchburg Fiber LLC | 256 | — | 1 |
| AS399875US | SIMONMED-PUBLIC - SimonMed Imaging | 256 | — | 1 |
| AS400739US | COM-NOC - City of Mishawaka | 256 | — | 1 |
| AS395978US | VALLEYWATER - SANTA CLARA VALLEY WATER DISTRICT PUBLIC FACILITIES FINANCING CORPORATION | 256 | — | 1 |
| AS33711US | SADDLE-NETWORKS - Saddle Networks | 256 | 768 | 3 |
| AS36456US | VELOCITYCU - Velocity Credit Union | 256 | — | 1 |
| AS397949US | REG-US-ASN-01 - Chevron Corporation | 256 | — | 1 |
| AS395936US | ASN-ROVHIL - Rust-Oleum Corporation | 256 | — | 1 |
| AS15019US | ZAPPOS - Zappos.com, Inc. | 256 | — | 1 |
| AS54656US | CALWATER - California Water Service Company | 256 | — | 1 |
| AS394439US | BMCSAAS-US - BMC Software, Inc. | 256 | — | 1 |
| AS5733US | MONRO-1 - Monroe County | 256 | — | 1 |
| AS15302US | TRIALCARD-01 - TrialCard Incorporated | 256 | — | 1 |
| AS36780US | SECURE-GATEWAY-ALSCO - ALSCO | 256 | — | 1 |
| AS400688US | DNET-464 - Daniel Marks, Sole Proprietorship | 256 | 2 | 2 |
| AS395671US | TENABLE-NETWORK-SECURITY-INC - Tenable, Inc. | 256 | — | 1 |
| AS46665US | ASM - Applied Statistics & Management, Inc. | 256 | — | 1 |
| AS54662US | ATFS - OLD REPUBLIC NATIONAL TITLE INSURANCE CO. | 256 | — | 1 |
| AS27414US | CARISDX - Caris Diagnostics, Inc. | 256 | — | 1 |
| AS393510US | SFHSH-ASNUMBER - St Francis Healthcare System of Hawaii | 256 | — | 1 |
| AS19015US | GREENPATH - GreenPath Inc | 256 | — | 1 |
| AS22695US | PLAYGROUND - Playground Global, LLC | 256 | 1 | 2 |
| AS400209US | BRAZORIA-COUNTY-TX - Brazoria County | 256 | — | 1 |
| AS46165US | RESOUND GENISYS-PUBLIC - Resound Networks, LLC | 256 | — | 1 |
| AS21644US | DISTINGUISHED-SERVICES - Distinguished Services | 256 | — | 1 |
| AS394921US | PAH - Punxsutawney Area Hospital | 256 | — | 1 |
| AS400977US | JCSMH-ASN-01 - Schneck Medical Center | 256 | — | 1 |
| AS30138US | ARTECH-INFO - Artech Information Systems LLC | 256 | — | 1 |
| AS402686US | WM-ASN - WOOD-MIZER, | 256 | — | 1 |
| AS62876US | 8X8-AS-CORP - 8x8, Inc. | 256 | — | 1 |
| AS400396US | JCMH - Jackson County Memorial Hospital | 256 | — | 1 |