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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 |
| 5.1K |
| — |
| 14 |
| AS32726US | LIBERTY - Liberty University | 5.1K | 272 | 15 |
| AS17204US | AKAMAI-NOMINUM-ASN - Akamai Technologies, Inc. | 5.1K | 1 | 3 |
| AS32135US | SAKURA-EYEBALL - SAKURA LTD. | 5.1K | — | 20 |
| AS4972US | UPS-AS4972 - UNITED PARCEL SERVICE | 5.1K | — | 17 |
| AS15121US | CALTEL-COM - Calaveras Internet Company | 5.1K | 65.5K | 18 |
| AS6379US | ALINK - A-Link Network Services, Inc. | 5.1K | 1 | 21 |
| AS394968US | QTS-CHI - Quality Technology Services, LLC | 5.1K | 65.5K | 7 |
| AS31777US | SPARCC-AS - Stark Portage Area Computer Consortium | 5.1K | — | 5 |
| AS395425US | FANDANGO - Fandango Media, LLC | 5.1K | — | 4 |
| AS14496US | AGILENT-COS - Agilent Technologies, Inc. | 5.1K | — | 20 |
| AS36825US | ASN-PNP - Plug and Play Tech Center | 5.1K | — | 2 |
| AS5088US | AS5088 - FOX CORPORATION | 5.1K | — | 5 |
| AS53628US | APYLI-AS - Apyl Inc | 5.1K | — | 15 |
| AS30455US | HOSTVENOM-LLC - HostVenom LLC | 5.1K | 4.1K | 18 |
| AS11245US | AS11245 - The Goodyear Tire & Rubber Company | 5.1K | — | 20 |
| AS394117US | ECI-ASN - Encore Communications, Inc | 5.1K | 65.5K | 3 |
| AS19390US | JHC - JH Compunet | 5.1K | — | 3 |
| AS26742US | MAXNOC-ASN - MaxNOC Communications, LLC. | 5.1K | — | 2 |
| AS40841US | MARKETAXESS-INC-AS - MARKETAXESS HOLDINGS, INC. | 5.1K | — | 15 |
| AS44259US | ULTAHOST-AP-AS Ultahost, Inc. | 5.1K | — | 20 |
| AS27009US | CUSD - Clovis Unified School District | 5.1K | — | 2 |
| AS55091US | LAYER-3-COMMUNICATIONS - Layer 3 Communications | 5.1K | 69.9K | 13 |
| AS20224US | COLUMBIA-ENERGY-LLC - Columbia Energy L.L.C | 5.1K | 1 | 8 |
| AS402020US | ASN-PLANISYS - Planisys Corp | 5.1K | 131.1K | 19 |
| AS21843US | CITY-OF-BUFFALO - City of Buffalo | 5.1K | — | 2 |
| AS5091US | STRIPE - Stripe, Inc. | 5.1K | 1 | 21 |
| AS20329US | DIAMONDNET - Sallisaw Municipal Authority | 5.1K | — | 2 |
| AS36482US | PLACER-ASN - County of Placer | 5.1K | — | 2 |
| AS17004US | BROADBANDONDEMAND - Kentucky Wimax | 5.1K | — | 2 |
| AS40619US | CLARK-COUNTY-NEVADA - Clark County, Nevada | 5.1K | — | 5 |
| AS11949US | COZAD-TELEPHONE-COMPANY - COZAD TELEPHONE COMPANY | 5.1K | — | 2 |
| AS397710US | HARMONYTELCO - MiBroadband | 5.1K | — | 5 |
| AS18719US | TSRSOLUTIONS - TSR Solutions, Inc. | 5.1K | — | 5 |
| AS543US | HP-POLY - HP Inc. | 5.1K | — | 5 |
| AS10780US | PURE-STORAGE - Pure Storage, INC. | 5.1K | 1 | 21 |
| AS395000US | DELUXE-DEC - Deluxe Corporation | 5.1K | — | 20 |
| AS22332US | WDC-US - Western Digital Corporation | 5.1K | — | 14 |
| AS395266US | KEYSIGHT-TECHNOLOGIES - Keysight Technologies, Inc | 4.9K | 6 | 26 |
| AS394869US | APNC - Asia Pacific Network Corporation | 4.9K | — | 19 |
| AS400856US | HILLENBRAND-INC - Hillenbrand, Inc. | 4.9K | 256 | 5 |
| AS26385US | THE-UNIVERSITY-OF-VERMONT-MEDICAL-CENTER-1 - The University of Vermont Medical Center Inc | 4.9K | — | 19 |
| AS11228US | ARINC - ARINC INCORPORATED | 4.9K | 257 | 14 |
| AS40393US | CROSSLINKNETWORKS - Crosslink Networks LLC | 4.9K | — | 16 |
| AS36002US | GOMAMI - GoMami Networks | 4.9K | — | 17 |
| AS14184US | FTS-AS1 - FOX TELEVISION STATIONS, LLC | 4.9K | — | 19 |
| AS62994US | LCLOUD - LITE CLOUD INC | 4.9K | — | 13 |