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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 | 23,999 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,299 |
| 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.
32,154 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 231 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 437 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.5M | 3,882 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 1,990 |
| AS701US | UUNET - Verizon Business | 43.6M | 995 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,318 |
| 3.6K |
| — |
| 5 |
| AS26394US | CHOA - Children's Healthcare of Atlanta, Inc. | 3.6K | — | 7 |
| AS35829US | AUTHS auth-servers, LLC | 3.6K | 786.4K | 10 |
| AS33197US | DATACANOPY-SFO01 - Sidus Group, LLC | 3.6K | 65.8K | 5 |
| AS395339US | DONNELLEY-FINANCIAL - Donnelley Financial, LLC. | 3.6K | — | 14 |
| AS36136US | ALARMNET - ALARMNET | 3.6K | — | 8 |
| AS53812US | NETNV - NET NV LLC | 3.6K | — | 5 |
| AS397986US | PA-CONVENTION-CENTER - Pennsylvania Convention Center Authority | 3.6K | — | 7 |
| AS62550US | INOVADATA - Inova Data Solutions, Inc. | 3.6K | — | 6 |
| AS62705US | SCSB-1 - Spotsylvania County School Board | 3.6K | — | 14 |
| AS55143US | NEXUSTEK-LASASN01 - Nexus Technologies, LLC | 3.6K | — | 7 |
| AS19713US | STATE-OF-NH-USA - State of New Hampshire | 3.6K | — | 4 |
| AS26403US | MADERACOE - Madera County Office of Education | 3.6K | — | 3 |
| AS53577US | URSINUS - Ursinus College | 3.6K | — | 10 |
| AS19430US | ACXIOM-CORP - Acxiom LLC | 3.6K | — | 5 |
| AS53571US | PCC-CORP - PRECISION CASTPARTS CORP | 3.6K | — | 14 |
| AS54455US | MADEIT - MadeIT inc. | 3.6K | 65.5K | 6 |
| AS62637US | MOUND-1 - MOUNDVILLE TELEPHONE COMPANY, INC. | 3.6K | — | 3 |
| AS10788US | CDW - CDW LLC | 3.6K | — | 7 |
| AS12211US | OCNL-AS12211 - Operations & Compliance Network LLC | 3.6K | — | 13 |
| AS198178US | INC-PARTNERS-365 365.partners INC | 3.6K | 4 | 18 |
| AS25883US | CITIGROUP - Citigroup Inc. | 3.6K | — | 14 |
| AS46786US | IPTRANSIT - IP Transit Inc. | 3.6K | 65.5K | 14 |
| AS53914US | GENESIS-HOSTING-SOLUTIONS-LLC - Genesis Hosting Solutions, LLC | 3.6K | — | 6 |
| AS54825US | PACKET - Packet Host, Inc. | 3.6K | 4.2K | 22 |
| AS393792US | 2600HZ-AS - 2600hz, Inc | 3.6K | — | 10 |
| AS15269US | PAI-AS - ConocoPhillips Company | 3.6K | — | 8 |
| AS398487US | ZEROOUTAGES - ZeroOutages | 3.6K | — | 14 |
| AS22530US | DLKCORE - Dialink Corporation | 3.6K | — | 13 |
| AS46652US | SERVERSTACK-ASN - DigitalOcean, LLC | 3.6K | — | 8 |
| AS19556US | ISOTECH-INC - Isotech, Inc | 3.6K | — | 9 |
| AS400494US | CIRRASCALE-CLOUD-01 - Cirrascale Cloud Services LLC | 3.6K | — | 14 |
| AS46646US | BT-ASN - BOTTOMLINE TECHNOLOGIES (DE), INC | 3.6K | 2 | 10 |
| AS19240US | MLCRIF - MeridianLink, Inc. | 3.6K | — | 10 |
| AS2928US | COAT - Burlington Coat Factory Warehouse | 3.6K | — | 7 |
| AS40123US | R2G-2 - Transaction Network Services, Inc. | 3.6K | — | 7 |
| AS17207US | COLOR-COLL - Colorado College | 3.6K | — | 11 |
| AS401476US | SCNL-1-0001 - Spruce Creek Networks LLC | 3.6K | 256 | 15 |
| AS63152US | CASCADE-COMMUNICATIONS-01 - Cascade Communications Company | 3.6K | — | 6 |
| AS17192US | LEK - LEK Internet Services, Inc. | 3.6K | — | 3 |
| AS40510US | SFWL - Southern Fiber Worx | 3.6K | — | 7 |
| AS26630US | LPS-3 - Black Knight IP Holding Company, LLC | 3.6K | — | 13 |
| AS13376US | TOPPAN-MERRILL - Toppan Merrill LLC | 3.6K | — | 6 |
| AS17017US | AS-CAMPUSCOLO - campuscolo.com | 3.6K | 65.5K | 5 |
| AS21858US | ASCENT-DATA-LLC - Ascent Data, LLC | 3.6K | 65.5K | 7 |
| AS62549US | PARKLAND-COLLEGE-01 - Parkland College | 3.6K | — | 4 |
| AS27027US | AIRLINK-INTERNET - AirLink Internet Services | 3.6K | 65.5K | 9 |