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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 | 3,139 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 211.2M | 21,162 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 113.7M | 639 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,243 |
| 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.
31,994 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 229 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 383 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 49.3M | 3,670 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.7M | 1,950 |
| AS701US | UUNET - Verizon Business | 43.6M | 998 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,372 |
| 256 |
| — |
| 1 |
| AS14034US | SWIRE-COCA-COLA-USA-DRAPER-REDUNDANT-ACCESS - Swire Pacific Holdings Inc. | 256 | — | 1 |
| AS216242US | JUTLEY-AS Jeremy Utley | 256 | 256 | 5 |
| AS36542US | SERVERNET - Gwinnett County Government | 256 | — | 1 |
| AS20423US | SUQUAMISH-TRIBE - Suquamish Tribe | 256 | — | 1 |
| AS39981US | STONE-POINT-CAPITAL-PUBLIC - Stone Point Capital LLC | 256 | — | 1 |
| AS393462US | COLLETTE-HEALTH - Collette Health, LLC | 256 | 1 | 2 |
| AS11825US | AS-BLUEFIBER - BLUEFIBER.COM, INC. | 256 | — | 1 |
| AS32761US | WASSE-NYC - Wasserstein & Co. | 256 | — | 1 |
| AS17160US | NCOM-NA - Neofelis Communications | 256 | 4.1K | 3 |
| AS398771US | FLASHTALKING - Flashtalking, Inc. | 256 | — | 1 |
| AS62933US | SMC-AS - Statewide Central Station | 256 | — | 1 |
| AS64237US | MASS-MUTUAL - Massachusetts Convention Center Authority | 256 | — | 1 |
| AS15338US | CEROBI - CEROBI LLC | 256 | — | 1 |
| AS5733US | MONRO-1 - Monroe County | 256 | — | 1 |
| AS63302US | MFAB - Museum Of Fine Arts Boston | 256 | — | 1 |
| AS33324US | CHALLENGE-PRINTING - The IMAGINE Group, LLC | 256 | — | 1 |
| AS397815US | NMIH-SWITCH-01 - National Mortgage Insurance Corporation | 256 | — | 1 |
| AS54361US | PBCI - Poarch Band of Creek Indians | 256 | — | 1 |
| AS402549US | TERRASERVERS-NET - Terraservers | 256 | — | 1 |
| AS22236US | UNITEDBANCORP - The Citizens Savings Bank | 256 | — | 1 |
| AS400652US | KRV-GSH-01 - Keystone RV Company | 256 | — | 1 |
| AS3408US | AMC-NETWORKS - Rainbow Media Holdings LLC | 256 | — | 1 |
| AS62951US | DDRCORP - DDR Corp. | 256 | — | 1 |
| AS398702US | SRH-ASN - Scottish Rite Hospital for Children | 256 | — | 1 |
| AS398994US | KHS-USA-11 - KHS USA, Inc. | 256 | — | 1 |
| AS32213US | BLANK-ROME-LLP - BLANK ROME LLP | 256 | — | 1 |
| AS32752US | YCST-AS - Young Conaway Stargatt & Taylor, LLP | 256 | — | 1 |
| AS396865US | BACKBLAZE - Backblaze Inc | 256 | 4.1K | 2 |
| AS402132US | MIXHITS-RADIO - Mixhits Radio, LLC | 256 | — | 1 |
| AS32585US | KSCM-AS - King Street Capital Management, L.P. | 256 | — | 1 |
| AS207787US | NexusServers All Things Technology LLC | 256 | 1 | 2 |
| AS25642US | SPIDERHOST - The Frohman Group Inc. | 256 | — | 1 |
| AS36456US | VELOCITYCU - Velocity Credit Union | 256 | — | 1 |
| AS396136US | ECHO-ATL1 - Echo Technologies, LLC | 256 | — | 1 |
| AS401495US | IVA-ASN-1 - IVA | 256 | — | 1 |
| AS397723US | LAST-MILE-NETWORKS - Last Mile Networks LLC | 256 | 65.5K | 2 |
| AS11262US | WH-TRADING - W.H. Trading, L.L.C. | 256 | — | 1 |
| AS395103US | LUCASFILM-SKYSOUND - Lucasfilm Ltd. LLC | 256 | — | 1 |
| AS63281US | VERMONT-JUDICIARY-01 - Vermont Judiciary | 256 | — | 1 |
| AS62945US | CORNERSTONE - Cornerstone Information Systems, Inc. | 256 | — | 1 |
| AS26759US | SAGOFIBER-01 - Sago Fiber LLC | 256 | 65.5K | 2 |
| AS16636US | CWF-ASN-BGP - The Colonial Williamsburg Foundation | 256 | — | 1 |
| AS395999US | KIM-199-120-191-0 - Kimball International, Inc. | 256 | — | 1 |
| AS63135US | TABOR-COLLEGE-01 - Tabor College, Inc. | 256 | — | 1 |
| AS46900US | REPC-AS - Rushmore Electric Power Cooperative, Inc. | 256 | 256 | 2 |
| AS14930US | ALLANT-GROUP - The Allant Group, Inc. | 256 | — | 1 |