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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 |
| 3.3K |
| — |
| 4 |
| AS22040US | LINXUS1 - Linxus Internet | 3.3K | — | 10 |
| AS399378US | SMTC-01 - Stratford Mutual Telephone Company | 3.3K | — | 8 |
| AS394576US | MIAMI-INTERNATIONAL-AIRPORT - Miami International Airport | 3.3K | — | 6 |
| AS21787US | CERIDIAN - CERIDIAN | 3.3K | — | 7 |
| AS27298US | REACH4 - REACH4 Communications | 3.3K | 65.5K | 4 |
| AS1616US | DATABANK-CORELINK - CoreLink Data Centers | 3.3K | — | 6 |
| AS400897US | PETROSKY - PETROSKY CLOUD LLC | 3.3K | — | 7 |
| AS13996US | ECHOSTAR - Dish Network Corporation | 3.3K | — | 13 |
| AS14925US | DELTA - Delta Air Lines | 3.3K | — | 12 |
| AS32625US | OFFSITE-1 - OFFSITE, LLC | 3.3K | 65.5K | 5 |
| AS22121US | TOPSHAM-COMMUNICATIONS - Topsham Communications LLC | 3.3K | 65.5K | 4 |
| AS26804US | CBTS-US-PEERING-01 - CBTS Technology Solutions LLC | 3.3K | 4.1K | 9 |
| AS397688US | BWINPARTY-US-NV - BWIN.PARTY ENTERTAINMENT (NJ), LLC | 3.3K | — | 13 |
| AS12037US | FDIC-GOV - Federal Deposit Insurance Corporation | 3.3K | — | 13 |
| AS400385US | CITIZENS-TELEPHONE-ASN-01 - Citizens Telephone Corporation | 3.3K | — | 13 |
| AS964US | IONSWITCH-NW - IonSwitch NW, LLC | 3.3K | 131.1K | 9 |
| AS401097US | DICKINSON-EDU - Dickinson College | 3.3K | — | 4 |
| AS10298US | AS10298 - CACI Inc., Federal | 3.3K | — | 13 |
| AS395973US | GOOGLE-2 - Google LLC | 3.3K | 29 | 42 |
| AS53740US | OPTBIT - optbit LLC | 3.3K | 4.1K | 8 |
| AS27602US | PATHFINDER-ASN - Pathfinder Broadband | 3.3K | 65.5K | 9 |
| AS394621US | DATAHOLDINGS-414-USA - Stack41, llc. | 3.3K | 65.5K | 11 |
| AS14907US | WIKIMEDIA - Wikimedia Foundation Inc. | 3.3K | 11 | 22 |
| AS53808US | MOEDOVE-N2 - MoeDove | 3.3K | 289 | 22 |
| AS394133US | ATLRETAIL - T5 @ ATLANTA, LLC | 3.3K | — | 4 |
| AS397268US | WILDWISP-01 - Cambridge Telephone | 3.3K | — | 13 |
| AS1631US | AS1631 - Radnet Management, Inc. | 3.3K | — | 6 |
| AS14091US | THRIVE-SE2 - Thrive Operations, LLC | 3.3K | — | 13 |
| AS25631US | GALLAUDET - Gallaudet University | 3.3K | 1 | 6 |
| AS22362US | GLOBALTELLINK-HNSS - Global Tel*link Corporation | 3.3K | — | 10 |
| AS18602US | PWRWG - Paul, Weiss, Rifkind, Wharton & Garrison LLP | 3.3K | — | 10 |
| AS54043US | GOZFLY-LLC - GOZFLY LLC | 3.3K | 86K | 14 |
| AS16595US | TORO - The Toro Company | 3.3K | — | 11 |
| AS8116US | BOSTON-SCIENTIFIC-132-189-0-0 - Guidant Corporation | 3.3K | — | 9 |
| AS40428US | PANDORA-EQX-SJL - Pandora Media, LLC | 3.3K | 5 | 16 |
| AS15038US | CAMBINC-1 - The Cambridge Incubator, LLC | 3.3K | — | 10 |
| AS54829US | AS54829-NYITX - NYITX | 3.3K | 65.5K | 5 |
| AS26739US | DN-154-26739 - Dash Networks Inc. | 3.3K | 1 | 12 |
| AS62844US | SEIMITSU - The Seimitsu Corporation | 3.3K | — | 13 |
| AS400126US | CMCMD - Copper Mountain Consolidated Metropolitan District | 3.3K | — | 3 |
| AS22103US | NEXTIVA - Nextiva, Inc. | 3.3K | — | 13 |
| AS2153US | CENIC-2153 - CENIC | 3.1K | 257 | 13 |
| AS23077US | SPICA - SPICA Industry LLC | 3.1K | 272 | 9 |
| AS36645US | STEADFAST-NETWORKS-GEN - Genuity Networks, LLC | 3.1K | — | 3 |
| AS14488US | WKYBB - City of Williamstown | 3.1K | — | 12 |
| AS394452US | MCKINSEY-US-AWP - McKinsey & Company, Inc. | 3.1K | — | 12 |