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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. | 218.1M | 24,635 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 642 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,306 |
| 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.
32,220 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 | 3,891 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 2,003 |
| AS701US | UUNET - Verizon Business | 43.6M | 992 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,360 |
| 256 |
| — |
| 1 |
| AS398971US | MORGAN-ASN-EV-3 - Morgan Stanley | 256 | — | 1 |
| AS54371US | METROINET - City of Roseville - Minnesota | 256 | — | 1 |
| AS398551US | CITY-OF-SARASOTA - City of Sarasota, FL | 256 | — | 1 |
| AS54091US | WWMCASN - White Wilson Medical Center, P.A. | 256 | — | 1 |
| AS18691US | ASN-BN-ARVADA - Barber-Nichols, LLC | 256 | — | 1 |
| AS199454US | esimynetworkservices ESIMY LLC | 256 | — | 1 |
| AS36266US | SPL-ASN - Stonepeak Partners LP | 256 | — | 1 |
| AS21531US | QLRASN-1 - Quantum Leap Research LLC | 256 | — | 1 |
| AS46922US | GCM-ASN - Gladius Capital Management, LP | 256 | — | 1 |
| AS55139US | LDRY - Landry's, Inc. | 256 | — | 1 |
| AS40071US | IDIRECT - iDirect | 256 | — | 1 |
| AS394734US | CV-SFO-100S-01 - Convene | 256 | 1 | 2 |
| AS46731US | AS-CITYOFJEFFERSON - City of Jefferson | 256 | — | 1 |
| AS397253US | WCCLS-AS-01 - Washington County Cooperative Library Services | 256 | — | 1 |
| AS395809US | 8451-PUBLIC - 84.51 LLC | 256 | — | 1 |
| AS393993US | CODBBR01 - City of Daytona Beach | 256 | — | 1 |
| AS39943US | ST-FRANCIS-COLLEGE - St. Francis College | 256 | — | 1 |
| AS18524US | SAM-MEMPHIS - SOUTHEASTERN ASSET MANAGEMENT, INC. | 256 | — | 1 |
| AS12278US | AHMC-DC-01 - AHMC HEALTHCARE INC | 256 | — | 1 |
| AS393948US | GSUSA420 - Girl Scouts of the United States of America | 256 | — | 1 |
| AS27236US | CLEVELANDHEIGHTSUNIVERSITYHEIGHTSCITYSCHOOLS - Cleveland Heights University Heights City Schools | 256 | — | 1 |
| AS11370US | UW-ASN-01 - UltraWISP, LLC | 256 | — | 1 |
| AS14600US | SKYHIGH-SECURITY - SKYHIGH SECURITY LLC | 256 | — | 1 |
| AS33280US | AS-AFILIAS-MIA2 - Afilias, Inc. | 256 | 1 | 2 |
| AS395175US | HEIDENTECH - Heiden Technology Solutions | 256 | — | 1 |
| AS393871US | HAVAS-USA-E-DC - Havas Health, Inc. | 256 | — | 1 |
| AS400882US | AS-CYBER-DATA - Cyber Data LLC | 256 | 1 | 2 |
| AS31940US | INTERNATIONAL-TELNET-INC - International Telnet Inc. | 256 | — | 1 |
| AS46124US | NETISUP - The Net Is Up Inc. | 256 | — | 1 |
| AS54591US | CEF-DIGITAL-25081 - CEF DIGITAL SYSTEMS | 256 | 258 | 4 |
| AS53427US | TGLOBAL-NETWORKS - TGLOBAL NETWORKS | 256 | 262 | 8 |
| AS23166US | NORVAX - Norvax, LLC | 256 | — | 1 |
| AS23062US | JWPEPPER - J.W. Pepper & Son, Inc. | 256 | — | 1 |
| AS396074US | ONEIDACOUNTY-NY - Oneida County | 256 | — | 1 |
| AS13406US | MCCFL - State College of Florida, Manatee-Sarasota | 256 | — | 1 |
| AS53725US | PBF-ASN - PBF Holding Company LLC | 256 | — | 1 |
| AS396494US | AS-CITY-OF-ROCKVILLE-MARYLAND - Mayor and Council of Rockville | 256 | — | 1 |
| AS14404US | CITY-OF-WICHITA-1 - City of Wichita | 256 | 65.5K | 2 |
| AS62779US | AMER-COLLEGE-OF-CARDIOLOGY-HOSTING1 - American College of Cardiology | 256 | — | 1 |
| AS40497US | BETHEL-ASN1 - Bethel University | 256 | — | 1 |
| AS400760US | ACCESSON-NETWORKS-INC - AccessOn Networks, Inc. | 256 | 65.5K | 2 |
| AS400016US | DOVER-INTERNET - Dover Internet Services | 256 | — | 1 |
| AS54567US | CORPORATE-ROLANDDGA - Roland DGA Corporation | 256 | — | 1 |
| AS32687US | SKYTRON-AS - The KMW Group, Inc. | 256 | — | 1 |
| AS53409US | IEWC - IEWC | 256 | — | 1 |
| AS396488US | PHYSICIANSMUTUAL-ASN-1 - Physicians Mutual Insurance Company | 256 | — | 1 |