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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 | 25,270 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 642 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.7M | 1,323 |
| 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.
32,193 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 | 3,900 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.9M | 2,009 |
| AS701US | UUNET - Verizon Business | 43.6M | 993 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.5M | 4,230 |
| 5.1K |
| 1.5K |
| 30 |
| AS46974US | SERVAXNET - ServaxNet, LLC | 5.1K | 4.1K | 21 |
| AS36482US | PLACER-ASN - County of Placer | 5.1K | — | 2 |
| AS17204US | AKAMAI-NOMINUM-ASN - Akamai Technologies, Inc. | 5.1K | 1 | 3 |
| AS32385US | INTELEPEER-US-BACKBONE - IntelePeer, Inc. | 5.1K | — | 13 |
| AS32442US | USMNSTCMARCO01 - Marco Technologies LLC | 5.1K | — | 4 |
| AS54045US | WAVETECHSYSTEMS - Wavetech Systems, LLC. | 5.1K | — | 5 |
| AS10457US | ILX-ASN - Refinitiv US LLC | 5.1K | — | 19 |
| AS397332US | ANACORTES-MUNICIPAL-ISP - City of Anacortes | 5.1K | — | 5 |
| AS32915US | KATTARE - Kattare Internet Services | 5.1K | — | 13 |
| AS18719US | TSRSOLUTIONS - TSR Solutions, Inc. | 5.1K | — | 5 |
| AS53628US | APYLI-AS - Apyl Inc | 5.1K | — | 15 |
| AS395236US | STARTELCO - Star Communications | 5.1K | 65.5K | 3 |
| AS4884US | TCHD - Tarrant County Hospital District | 5.1K | — | 11 |
| AS394968US | QTS-CHI - Quality Technology Services, LLC | 5.1K | 65.5K | 7 |
| AS11949US | COZAD-TELEPHONE-COMPANY - COZAD TELEPHONE COMPANY | 5.1K | — | 2 |
| AS62715US | CRASHPLAN - CrashPlan | 5.1K | — | 17 |
| AS14480US | ORANGEBURGCOUNTYBB-SC - County of Orangeburg | 5.1K | — | 11 |
| AS397710US | HARMONYTELCO - MiBroadband | 5.1K | — | 5 |
| AS15177US | STARTOUCH-WA1 - STARTOUCH INC | 5.1K | — | 3 |
| AS44259US | ULTAHOST-AP-AS Ultahost, Inc. | 5.1K | — | 20 |
| AS16934US | LEACO-INTERNET - Leaco Rural Telephone | 5.1K | 65.5K | 3 |
| AS401319US | TENSORWAVE-01 - TensorWave Inc. | 5.1K | — | 10 |
| AS15165US | MTC-LRCOMMUNICATIONS - Mutual Telephone Company | 5.1K | 65.5K | 13 |
| AS21581US | M5HOSTING - M5 Computer Security | 5.1K | 65.6K | 23 |
| AS32746US | CDI - Computer Design & Integration LLC | 5.1K | — | 20 |
| AS55129US | METHOD - Method Technologies Inc. | 5.1K | 4.1K | 3 |
| AS43256US | KIN-AS Global Broadband Solution Inc | 5.1K | 1.5K | 26 |
| AS36825US | ASN-PNP - Plug and Play Tech Center | 5.1K | — | 2 |
| AS27009US | CUSD - Clovis Unified School District | 5.1K | — | 2 |
| AS397044US | MY-TEC-SA - My Tec Sa | 5.1K | — | 8 |
| AS16466US | AVAYA-ONECLOUD - Avaya LLC | 5.1K | — | 13 |
| AS63430US | 5X5 - 5x5 Telecom | 5.1K | 1 | 20 |
| AS394117US | ECI-ASN - Encore Communications, Inc | 5.1K | 65.5K | 3 |
| AS54945US | RACK59 - RACK59 Partners, LLC | 5.1K | 65.5K | 5 |
| AS46918US | GLPEER - GLOBALHOSTINGSOLUTIONS INC | 5.1K | — | 8 |
| AS2726US | AS-WEBFORMIX - Webformix | 5.1K | — | 2 |
| AS6379US | ALINK - A-Link Network Services, Inc. | 5.1K | 1 | 21 |
| AS40841US | MARKETAXESS-INC-AS - MARKETAXESS HOLDINGS, INC. | 5.1K | — | 15 |
| AS29733US | USFOOD - US FOODS, INC. | 5.1K | — | 13 |
| AS19390US | JHC - JH Compunet | 5.1K | — | 3 |
| AS14379US | N-T-C - The Northern Trust Company | 5.1K | — | 6 |
| AS30305US | LPS-1 - Black Knight IP Holding Company, LLC | 5.1K | — | 18 |
| AS62882US | STSS-HAZELWOOD-ASN - Mallinckrodt Enterprises LLC | 5.1K | — | 10 |
| AS33133US | CNSI-01 - CopperNet Systems, Inc. | 5.1K | — | 4 |
| AS53301US | RADIOLINKINTERNET - Radio Link Internet | 5.1K | — | 4 |
| AS36048US | BERRYCOMM - Berry-IT Incorporated | 5.1K | — | 10 |