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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) | 227.7M | 3,133 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 219M | 23,661 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 645 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,361 |
| 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.
32,363 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 236 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 439 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.8M | 3,911 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 45M | 2,046 |
| AS701US | UUNET - Verizon Business | 43.6M | 996 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.8M | 4,490 |
| 1.3K |
| — |
| 5 |
| AS63138US | SAC-COLO1 - Blue Shield of California | 1.3K | — | 5 |
| AS13837US | POINT5-MS - Point5 Managed Services, LLC | 1.3K | 65.5K | 5 |
| AS21763US | ROSSSTORES - Ross Stores Inc. | 1.3K | — | 5 |
| AS19747US | DATAVAIL-ASN - Datavail | 1.3K | 18 | 7 |
| AS10949US | SMART-CITY-HICC - SMART CITY NETWORKS, LIMITED PARTNERSHIP | 1.3K | — | 2 |
| AS31814US | FSI - FlightSafety International | 1.3K | — | 5 |
| AS46742US | QTS-HIL - Quality Technology Services, LLC | 1.3K | 65.5K | 3 |
| AS18693US | UCH-CENTRAL - University of Colorado Hospital | 1.3K | — | 4 |
| AS401608US | HUNTERWEB - Hunter Web LLC | 1.3K | — | 5 |
| AS32582US | 600AMPS - 600Amps Internet Services, Inc. | 1.3K | 4.1K | 4 |
| AS40615US | BCHD-AS-1 - University Health System | 1.3K | — | 5 |
| AS62659US | Q2HOLDINGS - Q2 Software, Inc. | 1.3K | — | 5 |
| AS46171US | CFBISD-AS1 - Carrollton-Farmers Branch Independent School Dist. | 1.3K | — | 5 |
| AS395222US | HOSTIOUS PRIMARY - Hostious LLC | 1.3K | — | 5 |
| AS400783US | DFC-ASN-01 - Dole Food Company, Inc. | 1.3K | — | 5 |
| AS11476US | PCT-01 - PRIME CARE TECHNOLOGIES, INC. | 1.3K | — | 2 |
| AS54159US | XETRANETWORKS - Xetra Networks Inc. | 1.3K | — | 4 |
| AS10946US | ASN-NTF - Network Time Foundation, Inc. | 1.3K | — | 2 |
| AS54430US | CRL-CORP - Clinical Reference Laboratory | 1.3K | — | 4 |
| AS62474US | EWEB - Eugene Water and Electric Board | 1.3K | — | 2 |
| AS25985US | SYMBIOSYSTEMS - SymbioSystems LLC | 1.3K | — | 5 |
| AS20334US | EPICTOUCH-AS-1 - Epic Touch Co. | 1.3K | — | 5 |
| AS398116US | FDNY-NETWORKSRV-01 - FDNY | 1.3K | — | 5 |
| AS10899US | CARIS LIFE SCIENCES - Caris Life Sciences | 1.3K | — | 4 |
| AS399545US | CCTC-ASN1 - Coleman County Telephone Cooperative, Inc. | 1.3K | — | 2 |
| AS394451US | EHS-AS-001 - Elliot Health System | 1.3K | — | 2 |
| AS62668US | OCG-INTERNET-SERVICES - Optical Communications Group, Inc. | 1.3K | — | 2 |
| AS394915US | DFC-WASH - U.S. International Development Finance Corporation | 1.3K | 32 | 7 |
| AS7219US | ASNTULIX - Tulix Systems, Inc. | 1.3K | 65.5K | 3 |
| AS46376US | CITYOFORLANDO-BLOCK - City of Orlando - Information Systems | 1.3K | — | 4 |
| AS18643US | SMART-CITY-TACC - SMART CITY NETWORKS, LIMITED PARTNERSHIP | 1.3K | — | 2 |
| AS23531US | SUNRISE-BANKS - Sunrise Banks | 1.3K | — | 3 |
| AS1074US | PRODUCTION-NETWORKS - Production Networks, LLC | 1.3K | — | 2 |
| AS22013US | GUARD-DC1 - Guardian Analytics, Inc. | 1.3K | — | 5 |
| AS395055US | DOCUSIGN-CORP-IT - DocuSign | 1.3K | — | 2 |
| AS22001US | INVITROGEN - Life Technologies Corp. | 1.3K | — | 4 |
| AS33151US | TRUSTWAVE-ASN - Trustwave Holdings, Inc. | 1.3K | 65 | 7 |
| AS30346US | TBD - Sumitomo Mitsui Banking Corporation | 1.3K | — | 5 |
| AS53706US | ARISE-VIRTUAL-SOLUTIONS-INC - Arise Virtual Solutions Inc. | 1.3K | — | 3 |
| AS7356US | SIKLA-AS - Sikla Tech Limited | 1.3K | 256 | 3 |
| AS63061US | CARLSONWAGONLITTRAVEL - CWT US, LLC | 1.3K | 1 | 4 |
| AS4539US | SEL-AS - Schweitzer Engineering Laboratories, Inc. | 1.3K | — | 2 |
| AS48231US | CRENET-AS CRE Network, LLC | 1.3K | 1.8K | 13 |
| AS21998US | SETA - SETA | 1.3K | — | 2 |
| AS398044US | FIBERFED - Trinity Network Solutions | 1.3K | 4.1K | 6 |
| AS395237US | CENTRIC-IS - CIS | 1.3K | — | 2 |