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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 | 24,555 |
| 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 |
| 232 |
| 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 | 1,995 |
| AS701US | UUNET - Verizon Business | 43.6M | 994 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,354 |
| WHITE-SKY-HOSTING - White Sky Hosting |
| 512 |
| 256 |
| 3 |
| AS26006US | EXODO - Exodo LLC | 512 | 272 | 4 |
| AS46362US | CSIU-AS-NUM - Central Susquehanna Intermediate Unit | 512 | — | 2 |
| AS218741US | ORG-LWL9-AS LATITUDE WIRELESS LLC | 512 | — | 2 |
| AS21710US | SLCHA - St. Lucie County - Automated Services | 512 | — | 2 |
| AS16384US | SMCVT - St Michael's College | 512 | — | 2 |
| AS398441US | CTON-CITY-SCHOOLS - Carrollton City Schools District | 512 | — | 2 |
| AS399828US | COKER-CAMPUS-01 - Coker University | 512 | — | 1 |
| AS401606US | CDOT-ITS-01 - Colorado Department of Transportation | 512 | — | 2 |
| AS10998US | BAC-MLAMRS - Bank of America, National Association | 512 | — | 2 |
| AS3921US | AGNOGE - General Electric Company | 512 | — | 2 |
| AS53793US | ACLI - ACLI | 512 | — | 2 |
| AS31803US | MMPLP - Magellan Midstream Partners, L.P. | 512 | — | 2 |
| AS12168US | DANAONMISSIONBAY-GUEST-INTERNET - The Dana On Mission Bay | 512 | — | 1 |
| AS54496US | JFBC-AS - Johnson Ferry Baptist Church, Inc. | 512 | 2 | 4 |
| AS25735US | SLOTH-NET - Sloth Networks | 512 | 256 | 3 |
| AS398009US | PRAIRIEHILLS - Prairie Hills Wireless LLC | 512 | — | 2 |
| AS36772US | WPTZ - Hearst-Argyle Television, Inc. | 512 | — | 2 |
| AS13570US | AS13570 - Angelo, Gordon & Co., L.P. | 512 | — | 2 |
| AS27170US | QBE-AMERICAS-ORD - QBE Americas, Inc. | 512 | — | 2 |
| AS396160US | ROYAL-REALITY-CORP - Royal Realty Corp. | 512 | — | 2 |
| AS395508US | PORTS-AMERICA - Ports America Shared Services, Inc. | 512 | — | 2 |
| AS400695US | APOG-FAYETTEVILLE - Apogee Telecom Inc. | 512 | — | 1 |
| AS46460US | KARMAK-NET - Karmak, Inc. | 512 | — | 1 |
| AS400918US | TWOROCKLAN - Two Rock LAN | 512 | — | 2 |
| AS400236US | EACS-5 - East Allen County Schools | 512 | — | 2 |
| AS401552US | EUC - Example User Content, LLC | 512 | — | 2 |
| AS399566US | BIGCOMMERCE - Bigcommerce Inc. | 512 | — | 2 |
| AS20364US | FIREFLY - Firefly Network LLC | 512 | — | 2 |
| AS12120US | AAO-AIO - Amphenol Corp | 512 | — | 2 |
| AS824US | GLAXOSMITHKLINE - GlaxoSmithKline | 512 | — | 1 |
| AS13978US | WHBE-OLYMPIA - Washington Health Benefit Exchange | 512 | — | 2 |
| AS36102US | PFS - State Street Bank and Trust Company | 512 | — | 2 |
| AS63151US | CPSL-ASN - The Children's Place | 512 | — | 2 |
| AS394761US | PTS-MAIN - Princeton Theological Seminary | 512 | — | 2 |
| AS5284US | DNIC-ASBLK-05120-05376 - United States Department of Defense (DoD) | 512 | — | 2 |
| AS62645US | SNAPNAMES - SNAPNAMES.COM, INC. | 512 | 1 | 2 |
| AS54639US | APOG-OSU-OK - Apogee Telecom Inc. | 512 | — | 1 |
| AS54743US | AS-TAGUCHI - Taguchi Networks LLC | 512 | — | 2 |
| AS7818US | ASN-QUEENCREEK - Town of Queen Creek | 512 | — | 2 |
| AS36787US | WMTW-TV-PORTLAND - Hearst-Argyle Television, Inc. | 512 | — | 2 |
| AS17342US | HCCFL-AS - Hillsborough Community College | 512 | — | 2 |
| AS11760US | CHFA - Connecticut Housing Finance Authority | 512 | — | 2 |
| AS47094US | ITRON-6-47094 - Itron | 512 | — | 2 |
| AS395133US | MEDQUEST - MedQuest Associates, Inc. | 512 | — | 2 |
| AS401710US | AS-CLOUDMESHLABS - CloudMesh Labs LLC | 512 | 3 | 5 |
| AS399206US | ASSOCIATED-COMPUTER-SYSTEMS - Associated Computer Systems, Ltd | 512 | — | 2 |