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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) | 227.5M | 3,134 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 218.2M | 25,525 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 642 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.7M | 1,309 |
| 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.
32,245 autonomous systems registered to United States. Click an AS for detail.
| 73M |
| 232 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 437 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.6M | 3,898 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 2,000 |
| AS701US | UUNET - Verizon Business | 43.6M | 991 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,357 |
| 1K |
| — |
| 1 |
| AS14362US | VAISALA1 - Vaisala Inc | 1K | — | 4 |
| AS397432US | FORTWORTH-CITY - City of Fort Worth | 1K | — | 3 |
| AS1878US | STUPI STUPI LLC | 1K | — | 4 |
| AS398158US | CRAA-ASN-01 - Columbus Regional Airport Authority | 1K | — | 1 |
| AS395645US | COMPLUS-ASN - Communications Plus, Inc. | 1K | — | 2 |
| AS12102US | CITY-OF-PORTLAND-OR-USA - City of Portland | 1K | — | 1 |
| AS32991US | SPECUSA-AS - Spectrum Software Solutions Inc. | 1K | — | 4 |
| AS32446US | HARBOR-CAPITAL-ADVISORS - Harbor Capital Advisors, Inc. | 1K | — | 3 |
| AS399239US | HILLTOWN-NETWORKS - Hilltown Networks | 1K | — | 4 |
| AS27465US | WIFINITY-ASN-01 - Net Vision Communications, LLC | 1K | — | 3 |
| AS33015US | LASCASN - Los Angeles Superior Court of California | 1K | — | 4 |
| AS36019US | 4SIWI-NET - 4 SIWI, LLC | 1K | — | 1 |
| AS400046US | ZINUS-US - Zinus Inc | 1K | — | 4 |
| AS46588US | CDW-CONFIGS-01 - CDW | 1K | — | 4 |
| AS401618US | AVISBUDGETGROUP - Avis Budget Group, Inc | 1K | — | 2 |
| AS32336US | SPRINGFIELD-COLLEGE-NET - Springfield College | 1K | — | 3 |
| AS40857US | PAECOM - IT-CNP, Inc. | 1K | 65.5K | 5 |
| AS46457US | ESD112 - ESD 112 | 1K | — | 3 |
| AS19358US | JBL-ASN - JOHNSON BROTHERS LIQUOR COMPANY | 1K | — | 3 |
| AS36367US | AGN-TECH - Alchemy Global Networks, LLC | 1K | 3 | 7 |
| AS54314US | LHA-2-ASN - Lancaster General Health | 1K | — | 4 |
| AS62576US | S-MOBILE-24 - S-Mobile LLC | 1K | — | 4 |
| AS14940US | LIGO-HANFORD-OBSERVATORY - LIGO Livingston Observatory | 1K | — | 1 |
| AS23291US | FLAGSTAR-BANK-US - Flagstar Bank | 1K | — | 4 |
| AS395562US | FIREBALLWIRELESS - Fireball Wireless LLC | 1K | — | 4 |
| AS40035US | HASTINGS-INSURANCE-CO - Hastings Insurance Company | 1K | 4 | 5 |
| AS19245US | HOOPA-VALLEY-TRIBE - Hoopa Valley Public Utilities District | 1K | — | 1 |
| AS36486US | AMTOTE-AS - AMTOTE INTERNATIONAL, INC. | 1K | — | 1 |
| AS36823US | MPHC - Martin's Point HealthCare | 1K | — | 2 |
| AS401037US | APOG-WVU - Apogee Telecom Inc. | 1K | — | 3 |
| AS54993US | OPSRP-IP-1 - OpsRamp, LLC | 1K | — | 4 |
| AS29963US | MARYKAY-NA - Mary Kay Inc. | 1K | — | 2 |
| AS12272US | MEDATA-PROD-AS - Medata Inc. | 1K | — | 4 |
| AS400406US | KMB2 - Kimberly-Clark Corporation | 1K | — | 3 |
| AS395687US | SKYPULSE - SkyPulse Communications | 1K | 65.5K | 4 |
| AS399251US | KBSI-ASN - Koch Industries, Inc. | 1K | — | 3 |
| AS12236US | HANOVER - Hanover Insurance Group, Inc. | 1K | — | 4 |
| AS55231US | 09172010 - Stratify IT, Inc. | 1K | — | 1 |
| AS13543US | COOKEVILLE-TN-GOV - City of Cookeville | 1K | 1 | 2 |
| AS27313US | SPENCER-STUART - Spencer Stuart | 1K | — | 4 |
| AS22106US | STA-DRT - Samsung SDS America, Inc. | 1K | — | 4 |
| AS23160US | HEILIND - Heilind Electronics | 1K | — | 4 |
| AS47100US | WITOPIA-AS1 - WiTopia, Inc. | 1K | — | 1 |
| AS399974US | FULTON-ASN - Fulton County Government | 1K | — | 4 |
| AS1420US | STL-C9D - STL OFFICE SOLUTIONS, INC. | 1K | — | 1 |
| AS3736US | AMERIWEB - American Webmasters Inc. | 1K | 4.1K | 4 |