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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 | 3,133 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 218M | 24,346 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,303 |
| 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.
32,168 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 233 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 437 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.5M | 3,885 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 1,996 |
| AS701US | UUNET - Verizon Business | 43.6M | 994 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,357 |
| 768 |
| — |
| 3 |
| AS12245US | PRMC-ASN - Peninsula Regional Medical Center | 768 | — | 3 |
| AS219217US | Zetly Netly LLC | 768 | — | 3 |
| AS22841US | NCCNORTHAMPTON - Northampton Community College | 768 | — | 3 |
| AS395982US | WKMC-ASN - Willis-Knighton Medical Center | 768 | — | 3 |
| AS6591US | INGR-ASN - Intergraph Corporation | 768 | — | 3 |
| AS12242US | NEL-ASN - Nodal Exchange, LLC | 768 | — | 2 |
| AS55264US | ATLANTIC-METRO-COMMUNICATIONS-II-INC - Atlantic Metro Communications II, Inc. | 768 | — | 2 |
| AS54651US | BLACK-DUCK-SOFTWARE-01 - Black Duck Software, Inc. | 768 | — | 2 |
| AS21537US | ENC-01 - Midland Credit Management, Inc. | 768 | — | 3 |
| AS396458US | CMM-ATL - CoverMyMeds LLC | 768 | — | 2 |
| AS40955US | REDHAT-DC-BOS2 - Red Hat, Inc. | 768 | 1 | 3 |
| AS54040US | NBCUNI - NBCUniversal | 768 | — | 2 |
| AS46436US | XR-ASN1 - XR Trading LLC | 768 | — | 3 |
| AS27608US | RIPPECLOUD - Rippe & Kingston, LLC | 768 | — | 3 |
| AS54645US | HANMI-INTERNET - HANMI BANK | 768 | — | 3 |
| AS27358US | TRUSTMARK-INSURANCE-INTERNET - TRUSTMARK INSURANCE CO. | 768 | — | 3 |
| AS7324US | IFAX-ASN-1 - iFAX Solutions, Inc. | 768 | 16 | 4 |
| AS26694US | ADMIS-AS - Adm Investor Services, Inc | 768 | — | 3 |
| AS7285US | SAGENET - SageNet LLC | 768 | — | 3 |
| AS18864US | FIRST-UNITED-BANK - First United Bank and Trust Company | 768 | — | 3 |
| AS29817US | LCB-ARIN-113 - LAKE CITY BANK | 768 | — | 3 |
| AS60281US | WEBAIR-INTERNET-UK WEBAIR INTERNET DEVELOPMENT COMPANY LLC | 768 | — | 3 |
| AS398542US | ONECHRONOS - OneChronos | 768 | — | 3 |
| AS23047US | MCKINSEY-US - Mckinsey & Company | 768 | — | 3 |
| AS5052US | DNIC-AS-05052 - United States Department of Defense (DoD) | 768 | — | 3 |
| AS40211US | STEINERSTUDIOS - Steiner Studios | 768 | — | 2 |
| AS25938US | SOROS-FUND-MAN - Soros Fund Management LLC | 768 | — | 3 |
| AS13344US | NETEX-INC - NetEx Inc. | 768 | — | 3 |
| AS26182US | AS-EXCELLUS - Excellus Health Plan, Inc. | 768 | — | 3 |
| AS17301US | FASTENAL - Fastenal Company | 768 | — | 2 |
| AS27477US | POLAR-PUBLIC-HUB-POP-ASN - IBM | 768 | — | 3 |
| AS14020US | LONGWOOD-1 - Longwood Gardens Inc. | 768 | — | 3 |
| AS54174US | BCBST - BlueCross BlueShield of Tennessee | 768 | — | 3 |
| AS14541US | GE-AIRCRAFT-ENGINES - GE AIRCRAFT ENGINES | 768 | — | 3 |
| AS20171US | ASN-KEYWORDS-STUDIOS - Keywords Studios US INC. | 768 | — | 2 |
| AS19980US | CAREERED - Career Education Corporation | 768 | — | 2 |
| AS16738US | LMI - Logistics Management Institute | 768 | — | 3 |
| AS46496US | WTNC-INTERNAL-ISP - Washoe Tribe of Nevada and California | 768 | — | 3 |
| AS22535US | EPLINC - EPL INC | 768 | — | 3 |
| AS401731US | ROLL-TIDE - The University of Alabama Athletics | 768 | 1 | 4 |
| AS32053US | SULLCROM - SULLCROM | 768 | — | 3 |
| AS399135US | 617A-AS-1 - 617A Corporation | 768 | 2 | 5 |
| AS63404US | AGIOS - Agios Pharmaceuticals, Inc. | 768 | — | 3 |
| AS211607US | RECORDEDFUTURE Securitytrails, LLC | 768 | 4.1K | 5 |
| AS14475US | D4-NETW - D4 Networks L.L.C. | 768 | 3 | 6 |
| AS7723US | EMERGENCY24-AS - Emergency 24 | 768 | — | 3 |