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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 | 3,134 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 219M | 23,681 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 645 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,370 |
| 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.
32,364 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 236 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 439 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.8M | 3,914 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 45M | 2,047 |
| AS701US | UUNET - Verizon Business | 43.6M | 996 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.8M | 4,503 |
| 256 |
| — |
| 1 |
| AS13494US | AS-NJ - Morningstar, Inc. | 256 | — | 1 |
| AS3601US | IXA-NET - Interconnected Associates (IXA) Inc. | 256 | 1 | 2 |
| AS400723US | SPS-US-MSP-DC1 - SPS Commerce, Inc. | 256 | — | 1 |
| AS393822US | POSDNET - Port of San Diego | 256 | — | 1 |
| AS33344US | PUBLIC-AS - American Petroleum Institute | 256 | — | 1 |
| AS398922US | JDSL-ASN - Jubilee Data Systems, LLC | 256 | 1 | 2 |
| AS26841US | HIDDEN-VILLA-RANCH - Hidden Villa Ranch | 256 | — | 1 |
| AS14471US | AUTOMATED-MEDIA-INC - Automated Media, Inc. | 256 | — | 1 |
| AS10517US | THE-BANK-OF-NEW-YORK-MELLON-CORPORATION-AS10517 - The Bank of New York Mellon Corporation | 256 | — | 1 |
| AS57406US | Zero-Distance Zero Distance Internet LLC | 256 | 256 | 2 |
| AS64287US | IPS - IPS-INTEGRATED PROJECT SERVICES, LLC | 256 | — | 1 |
| AS23477US | ITBYGEEKS - IT By Geeks LLC | 256 | 1 | 2 |
| AS401021US | FASTPIX - FastPix Inc. | 256 | — | 1 |
| AS53777US | FWPARKER - Francis W. Parker School | 256 | — | 1 |
| AS17180US | MFS-TKY - Massachusetts Financial Services | 256 | — | 1 |
| AS398189US | NFOCUS-01 - NFOCUS CONSULTING INC. | 256 | — | 1 |
| AS402006US | CHRYSANTHEMUM - CHRYSANTHEMUM LOTUS LIMITED | 256 | — | 1 |
| AS401432US | KIRKLAND-ELLIS-FF - Kirkland & Ellis LLP | 256 | — | 1 |
| AS22664US | KIWI-TECHONOLOGY-NETWORK - Kiwi Technology Consulting LLC | 256 | — | 1 |
| AS394143US | LTX-DC - C.O.P.S. Monitoring | 256 | — | 1 |
| AS395721US | BCBSKC - Blue Cross and Blue Shield of Kansas City | 256 | — | 1 |
| AS403039US | KICYA - Kicya | 256 | 1 | 2 |
| AS398344US | HGTECH - Higher Ground Technologies | 256 | — | 1 |
| AS54762US | ASHLANDUNIVERSITY - Ashland University | 256 | — | 1 |
| AS14917US | MILTON-CAT - Milton CAT | 256 | — | 1 |
| AS46828US | MILESK-AS1 - SILVER STAR BRANDS, INC. | 256 | — | 1 |
| AS62953US | EXCEL-IND - Excel Industries, Inc. | 256 | — | 1 |
| AS397734US | RAD-ROANOKE - Radford University | 256 | — | 1 |
| AS394438US | CITY-OF-PRINEVILLE - City of Prineville | 256 | — | 1 |
| AS13515US | PBA - Palm Beach Atlantic University | 256 | — | 1 |
| AS395528US | IRI-IAD - International Registries | 256 | — | 1 |
| AS393828US | EA-MADISON - Electronic Arts, Inc. | 256 | — | 1 |
| AS401527US | APPALYTICS-MAIN - Appalytics LLC | 256 | — | 1 |
| AS30262US | PTT-AS - High 5 Games, LLC | 256 | — | 1 |
| AS22977US | LIT-BMT - Lamar Institute of Technology | 256 | — | 1 |
| AS399443US | NIELSEN-MEDIA - THE NIELSEN COMPANY (US), LLC | 256 | — | 1 |
| AS62548US | NORWICH-PUBLIC-UTILITIES - City of Norwich Department of Public Utilities | 256 | — | 1 |
| AS22962US | KENNEDY-NW-DC-US - The Kennedy Center | 256 | — | 1 |
| AS26213US | DMSMAIN - Dealer Marketing Services | 256 | — | 1 |
| AS14411US | MNCPPC-EIT - Maryland-National Capital Park and Planning Commission | 256 | — | 1 |
| AS18633US | HPICORP - Health Plans Inc | 256 | — | 1 |
| AS16576US | CODEX-STREAMING - Codex Streaming Company LLC | 256 | 65.5K | 2 |
| AS11511US | CRETE-INTERNET - Crete Carrier Corporation | 256 | 1 | 2 |
| AS36059US | ETOGY-01 - Etogy, Inc. | 256 | — | 1 |
| AS25621US | ASN-GENESIS - Genesis Health System | 256 | — | 1 |
| AS13869US | TEAM-AIR-EXPRESS - Team Worldwide | 256 | 1 | 2 |