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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 | 23,666 |
| 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 |
| 234 |
| 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 | 4,491 |
| 5.9K |
| 1 |
| 5 |
| AS13427US | SOFTCOM - Softcom Internet Communications, Inc. | 5.9K | 65.5K | 6 |
| AS16841US | GBLIT-ASN1 - GLOBAL IT | 5.9K | — | 14 |
| AS32695US | WHITE-RIVER-CONNECT - White River Connect | 5.9K | 73.7K | 12 |
| AS21837US | OPERASOFTWARE - Opera Software Americas LLC | 5.9K | 2 | 12 |
| AS13331US | METAPEER-INC - MetaPeer | 5.9K | 17 | 12 |
| AS396259US | TERIDION1 - Teridion inc | 5.9K | — | 23 |
| AS30635US | ASANDJ-AS-233W - AS&J Associates, Inc. | 5.9K | — | 8 |
| AS396258US | SEATTLEU-AS - Seattle University | 5.9K | — | 5 |
| AS32022US | CHC-AS - Children's Hospital Colorado | 5.9K | — | 8 |
| AS16612US | NEIT-AS1 - NEIT Services, LLC | 5.9K | 65.5K | 8 |
| AS16403US | BOISE-CASCADE - Boise Cascade Corporation | 5.9K | — | 8 |
| AS30031US | MIMECAST-US - Mimecast North America Inc | 5.9K | 5 | 26 |
| AS17056US | CIPHERSPACE - CipherSpace, LLC | 5.9K | 65.5K | 14 |
| AS400696US | MIBURA-1 - MIBURA, INC. | 5.9K | 458.8K | 40 |
| AS399606US | IMAGINGBAY - Imaging Bay, Inc. | 5.9K | 4 | 27 |
| AS26685US | FRK-SMO - Franklin Resources | 5.9K | — | 16 |
| AS19766US | DRYDEN-FIBER - Dryden Fiber | 5.9K | — | 5 |
| AS395341US | WCT-16 - White Cloud Technologies LLC | 5.9K | — | 12 |
| AS996US | JY-MOBILE-COMMUNICATIONS - JY Mobile Communications | 5.9K | 262.1K | 10 |
| AS33346US | MONSTERBROADBAND - Point Broadband Fiber Holding, LLC | 5.9K | 4.1K | 10 |
| AS396979US | OSD-ASN-1 - OXNARD SCHOOL DISTRICT | 5.9K | — | 4 |
| AS64233US | TERAMUNDI - Teramundi | 5.9K | — | 11 |
| AS7247US | MOJO - Mojo Networks | 5.9K | 257 | 10 |
| AS22311US | FAIRNET-LLC - FAIRNET LLC | 5.9K | — | 21 |
| AS54241US | BOLT-INTERNET - Midvale Telephone Exchange, Incorporated | 5.9K | 65.5K | 9 |
| AS11840US | VGRS-REGISTRY-AS - VeriSign Infrastructure & Operations | 5.9K | 10 | 33 |
| AS397031US | GALAXYGATE - GALAXYGATE, LLC | 5.9K | 2.1K | 20 |
| AS14991US | IL2K - ElkhartNet, Inc | 5.9K | — | 6 |
| AS46392US | GCPOWERNET - Grant County Powernet, Inc. | 5.9K | 65.5K | 11 |
| AS4358US | XNET - XNet Information Systems, Inc. | 5.9K | — | 7 |
| AS3791US | ASCENSION-KSWIC - Ascension Technologies | 5.9K | — | 23 |
| AS4136US | QTS - Quality Technology Services, LLC | 5.9K | 65.5K | 6 |
| AS32458US | INDCONET - IND. CO. CABLE TV, INC. | 5.9K | 32.8K | 25 |
| AS13598US | DAIMLERTRUCKS-NA-AS - DAIMLER TRUCKS OF NORTH AMERICA LLC | 5.6K | — | 10 |
| AS36502US | CERNER-CORPORATE-AS - Cerner Corporation | 5.6K | — | 6 |
| AS36222US | WINDWAVE-COMMUNICATIONS - WindWave Communications | 5.6K | 131.1K | 17 |
| AS55211US | AS-EDGEUNO-NETWORK - EdgeUno | 5.6K | 65.6K | 11 |
| AS32402US | ASN-TOWER - Tower Research Capital LLC | 5.6K | — | 7 |
| AS20356US | BACAVALLEY-COM - SIERRA COMMUNICATIONS, INC. | 5.6K | — | 13 |
| AS36538US | SJCNET-ASN - San Jacinto College District | 5.6K | — | 7 |
| AS40911US | L2NC-AS - L2Networks Corp. | 5.6K | — | 7 |
| AS5726US | INTERWORLD - InterWorld Communications, Inc. | 5.6K | — | 19 |
| AS29892US | BLUELOCK - BlueLock, LLC | 5.6K | — | 19 |
| AS13511US | UNIVI-2-ASN - Univision Communications Inc. | 5.6K | — | 12 |
| AS13431US | MILLENNIUM-AS - Millennium Partners, L.P. | 5.6K | — | 19 |
| AS4996US | SBI - Citigroup Inc. | 5.6K | — | 22 |