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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 | 3,133 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 219M | 23,666 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 645 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,361 |
| 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.
32,363 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 234 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 439 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.8M | 3,911 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 45M | 2,046 |
| AS701US | UUNET - Verizon Business | 43.6M | 996 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.8M | 4,491 |
| 3.1K |
| — |
| 12 |
| AS43076US | LU-AS Global Broadband Solution Inc | 3.1K | — | 12 |
| AS54681US | ROSE-AS - Aubrey Rose | 3.1K | 7.5K | 53 |
| AS21818US | BWTELCOM - BWTelcom | 3.1K | 65.5K | 3 |
| AS36645US | STEADFAST-NETWORKS-GEN - Genuity Networks, LLC | 3.1K | — | 3 |
| AS32289US | SWIFT-TRANSPORTATION-CORPORATION-INC - Swift Transportation Co., LLC | 3.1K | — | 8 |
| AS29898US | MONEYGRAM-INTERNATIONAL-INC - MoneyGram International Inc | 3.1K | — | 9 |
| AS929US | KIRINO - KIRINO LLC | 3.1K | — | 3 |
| AS19743US | AVISP - AVISP.COM | 3.1K | — | 3 |
| AS15036US | TOWN-OF-PINEVILLE - Town of Pineville | 3.1K | — | 3 |
| AS54062US | SOUTHWIREPUBLIC - Southwire Company | 3.1K | — | 2 |
| AS14488US | WKYBB - City of Williamstown | 3.1K | — | 12 |
| AS277US | DXC-AS277 - DXC US Latin America Corporation | 3.1K | — | 6 |
| AS40170US | MTR0-01 - Intermetro Communications, Inc. | 3.1K | — | 12 |
| AS11817US | STAFFORDNET - Stafford Associates Computer Specialists, Inc. | 3.1K | — | 12 |
| AS394699US | ZENFI-ACCESS - ZenFi Networks LLC | 3.1K | — | 6 |
| AS23077US | SPICA - SPICA Industry LLC | 3.1K | 256 | 8 |
| AS64280US | PALO-ALTO-NETWORKS - Palo Alto Networks, Inc | 3.1K | — | 12 |
| AS32688US | GOLDEN1-CU-NET - THE GOLDEN 1 CREDIT UNION | 3.1K | — | 12 |
| AS14074US | COLGATE - Colgate-Palmolive Co. | 3.1K | 256 | 13 |
| AS395381US | CTC-INTERNET - CTC Internet, Inc. | 3.1K | — | 2 |
| AS401654US | DAWNVENTURES - Dawn Ventures | 3.1K | — | 12 |
| AS19683US | FORENDATA - Foren Data, Inc. | 3.1K | — | 9 |
| AS13959US | AUTOPHONE-OF-LAREDO - Autophone of Laredo | 3.1K | — | 12 |
| AS22322US | OBERLIN-NET - CABLE CO-OP | 3.1K | — | 12 |
| AS399776US | PBC-SEA-WA-POP - Premera Blue Cross | 3.1K | — | 4 |
| AS26082US | POWERSHIFT-PLAINFIELD-VT - Power Shift Computer Services, Inc. | 3.1K | — | 4 |
| AS11047US | HHCC-ASN1 - Hartford Hospital | 3.1K | — | 12 |
| AS400988US | SLCO-ASN-01 - Salt Lake County | 3.1K | — | 9 |
| AS399970US | ARIN-RS-RND - ARIN Routing Security | 3.1K | 121.4K | 103 |
| AS11255US | SBT-NET - Screamin' Banshee Technologies | 3.1K | — | 12 |
| AS27398US | AITSL-27398 - Alyeska Information Technology Services LLC | 3.1K | 4 | 6 |
| AS7194US | BWP - City of Burbank | 3.1K | 65.5K | 12 |
| AS31915US | MOJOBROADBAND - Mojo Broadband | 3.1K | 65.5K | 3 |
| AS11288US | IDMS101 - InfraDMS | 3.1K | — | 2 |
| AS54381US | SACATECH - SACA Technologies, Inc. | 3.1K | — | 12 |
| AS46286US | COOK-COUNTY - Cook County | 3.1K | — | 7 |
| AS399282US | CONNEXT-BROADBAND - Connext LLC | 3.1K | 65.5K | 13 |
| AS399678US | CARRIER-AMER - Carrier Corporation | 3.1K | — | 6 |
| AS53536US | PRINETIME - Prinetime Internet Solutions, LLC | 3.1K | — | 2 |
| AS62688US | ICTC - Inter-Community Telephone Co. | 3.1K | 65.5K | 6 |
| AS23132US | CHARTER-23132-SOUTHERN-NEW-ENGLAND-C3 - Charter Communications LLC | 3.1K | 288 | 7 |
| AS12190US | OOCL-LEV - OOCL (USA), Inc. | 3.1K | — | 12 |
| AS32879US | NV-LEG-01 - State of Nevada Legislature | 3.1K | 65.5K | 6 |
| AS25862US | ISNX - ISNX LLC | 3.1K | — | 12 |
| AS14652US | COSTARGROUPASN - COSTAR GROUP Inc. | 3.1K | — | 10 |
| AS40501US | SOUNDSTACK - SoundStack Technologies, LLC | 3.1K | — | 12 |