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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) | 227.4M | 3,133 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 217.9M | 25,247 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 642 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.7M | 1,322 |
| 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.
32,189 autonomous systems registered to United States. Click an AS for detail.
| 72.9M |
| 229 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 437 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.6M | 3,901 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.9M | 2,010 |
| AS701US | UUNET - Verizon Business | 43.6M | 993 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.5M | 4,222 |
| 3.6K |
| 4.1K |
| 7 |
| AS27615US | HOVRS - Purple Language Services Co. | 3.6K | — | 14 |
| AS401851US | COSD - County of San Diego | 3.6K | — | 12 |
| AS11171US | AUTONATION-FTLD - Autonation, Inc | 3.6K | — | 4 |
| AS36136US | ALARMNET - ALARMNET | 3.6K | — | 8 |
| AS395110US | AERODATA - AeroData, Inc. | 3.6K | — | 9 |
| AS63086US | UBER-PROD - Uber Technologies, Inc | 3.6K | — | 11 |
| AS396292US | EPSILON-EGI - Epsilon Data Management LLC | 3.6K | — | 12 |
| AS19713US | STATE-OF-NH-USA - State of New Hampshire | 3.6K | — | 4 |
| AS36791US | PDXHOSTING - Portland Internet Hosting LLC | 3.6K | 4.4K | 9 |
| AS206216US | ADVIN-AS Advin Services LLC | 3.6K | 7.4K | 36 |
| AS53571US | PCC-CORP - PRECISION CASTPARTS CORP | 3.6K | — | 14 |
| AS54455US | MADEIT - MadeIT inc. | 3.6K | 65.5K | 6 |
| AS55143US | NEXUSTEK-LASASN01 - Nexus Technologies, LLC | 3.6K | — | 7 |
| AS17117US | RITSNET - RITSnet, Inc. | 3.6K | 1 | 15 |
| AS53577US | URSINUS - Ursinus College | 3.6K | — | 10 |
| AS62550US | INOVADATA - Inova Data Solutions, Inc. | 3.6K | — | 6 |
| AS397986US | PA-CONVENTION-CENTER - Pennsylvania Convention Center Authority | 3.6K | — | 7 |
| AS53294US | FOX-NEWS-CHANNEL-NETWORK - Fox News Channel | 3.6K | — | 13 |
| AS26394US | CHOA - Children's Healthcare of Atlanta, Inc. | 3.6K | — | 7 |
| AS2912US | CITI5 - Citigroup Inc. | 3.6K | — | 14 |
| AS395339US | DONNELLEY-FINANCIAL - Donnelley Financial, LLC. | 3.6K | — | 14 |
| AS46786US | IPTRANSIT - IP Transit Inc. | 3.6K | 65.5K | 14 |
| AS26630US | LPS-3 - Black Knight IP Holding Company, LLC | 3.6K | — | 13 |
| AS25883US | CITIGROUP - Citigroup Inc. | 3.6K | — | 14 |
| AS401476US | SCNL-1-0001 - Spruce Creek Networks LLC | 3.6K | 256 | 15 |
| AS19240US | MLCRIF - MeridianLink, Inc. | 3.6K | — | 10 |
| AS2928US | COAT - Burlington Coat Factory Warehouse | 3.6K | — | 7 |
| AS22530US | DLKCORE - Dialink Corporation | 3.6K | — | 13 |
| AS53914US | GENESIS-HOSTING-SOLUTIONS-LLC - Genesis Hosting Solutions, LLC | 3.6K | — | 6 |
| AS198178US | INC-PARTNERS-365 365.partners INC | 3.6K | 3 | 17 |
| AS17207US | COLOR-COLL - Colorado College | 3.6K | — | 11 |
| AS15269US | PAI-AS - ConocoPhillips Company | 3.6K | — | 8 |
| AS398487US | ZEROOUTAGES - ZeroOutages | 3.6K | — | 14 |
| AS393792US | 2600HZ-AS - 2600hz, Inc | 3.6K | — | 10 |
| AS46652US | SERVERSTACK-ASN - DigitalOcean, LLC | 3.6K | — | 8 |
| AS15626US | GF-UA ROUTE 95 LLC | 3.6K | 65.5K | 11 |
| AS46646US | BT-ASN - BOTTOMLINE TECHNOLOGIES (DE), INC | 3.6K | 2 | 10 |
| AS12211US | OCNL-AS12211 - Operations & Compliance Network LLC | 3.6K | — | 13 |
| AS10788US | CDW - CDW LLC | 3.6K | — | 7 |
| AS63152US | CASCADE-COMMUNICATIONS-01 - Cascade Communications Company | 3.6K | — | 6 |
| AS17192US | LEK - LEK Internet Services, Inc. | 3.6K | — | 3 |
| AS40123US | R2G-2 - Transaction Network Services, Inc. | 3.6K | — | 7 |
| AS62637US | MOUND-1 - MOUNDVILLE TELEPHONE COMPANY, INC. | 3.6K | — | 3 |
| AS219160US | PRIVATASOLUTIONS-AS Privata Solutions L.L.C. | 3.6K | — | 14 |
| AS55028US | KIEWIT-US - Kiewit Corporation | 3.6K | 4.1K | 8 |
| AS46549US | GVO - Global Virtual Opportunities | 3.6K | — | 3 |