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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) | 227.4M | 3,133 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 217.9M | 25,270 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 642 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.7M | 1,323 |
| 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.
32,193 autonomous systems registered to United States. Click an AS for detail.
| 72.9M |
| 229 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 437 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.6M | 3,900 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.9M | 2,009 |
| AS701US | UUNET - Verizon Business | 43.6M | 993 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.5M | 4,230 |
| 4.1K |
| — |
| 1 |
| AS17322US | NAVIGY-HOLDINGS - Navigy Holdings, Inc. | 4.1K | — | 1 |
| AS6994US | FASTMETRICS - Fastmetrics | 4.1K | — | 1 |
| AS46452US | AS1 - Texas CellNet, Inc. | 4.1K | — | 16 |
| AS22068US | TJC-62001 - Tyler Junior College | 4.1K | — | 2 |
| AS11889US | IVANET-DAL - iBasis, Inc. | 4.1K | 256 | 14 |
| AS7384US | INTUIT - Intuit Inc. | 4.1K | — | 16 |
| AS55247US | IVALUA - Ivalua Inc. | 4.1K | — | 12 |
| AS23339US | MU-ASN - Marymount University | 4.1K | — | 6 |
| AS20469US | TRIMETNET - Tri-County Metropolitan Transit District | 4.1K | — | 1 |
| AS401773US | WCO-AS - Washington County, Oregon | 4.1K | — | 1 |
| AS32024US | BLUEFI-AS-1 - Blueficity | 4.1K | 65.5K | 13 |
| AS33045US | HGST-AS - Western Digital Corporation | 4.1K | — | 11 |
| AS395896US | SCC-180-ASN - Southeast Community College | 4.1K | — | 1 |
| AS22247US | LETOURNEAUUNIVERSITY - LeTourneau University | 4.1K | — | 1 |
| AS11061US | ANTEL-NET - Antelecom, Inc. | 4.1K | — | 1 |
| AS20228US | NTUA - Navajo Tribal Utility Authority | 4.1K | 65.5K | 4 |
| AS32554US | MCIU - Montgomery County Intermediate Unit | 4.1K | 65.5K | 2 |
| AS401377US | PUMASERVNET - PUMA SERVERS LLC | 4.1K | — | 1 |
| AS209622US | upress-drb uPress Inc | 4.1K | 6 | 21 |
| AS18817US | MIDCO-NET-DW - Midcontinent Communications | 4.1K | — | 1 |
| AS26165US | CHSCC - Chattanooga State Community College | 4.1K | — | 2 |
| AS394586US | OCC-MAIN - Onondaga Community College | 4.1K | — | 1 |
| AS19939US | BCTELCO - Beaver Creek Telephone Company | 4.1K | — | 1 |
| AS27183US | NSD417 - Northshore School District | 4.1K | — | 1 |
| AS394976US | ABACUS - Abacus Data Systems, Inc. | 4.1K | 2 | 7 |
| AS13788US | USCOURTS - US Courts | 4.1K | — | 13 |
| AS400514US | ESPACE-NETWORKS - ESpace Networks | 4.1K | — | 14 |
| AS54324US | GSI-ASN - Geographic Solutions, Inc. | 4.1K | — | 3 |
| AS14497US | BITREFINERY-1 - Bit Refinery, LLC | 4.1K | — | 13 |
| AS53398US | BERKA-ASN - Berkadia Commercial Mortgage LLC | 4.1K | — | 2 |
| AS16822US | VISER - Viser | 4.1K | — | 1 |
| AS19856US | BRAZOSPORT-COLLEGE - Brazosport College | 4.1K | — | 1 |
| AS23027US | BOINGO - Boingo Wireless, Inc. | 4.1K | — | 1 |
| AS40197US | NBS-72 - Nextlink Broadband | 4.1K | — | 1 |
| AS27403US | APA-CTY - Apache County Board of Supervisors | 4.1K | — | 1 |
| AS12273US | TRUELINK - Transunion Interactive, Inc. | 4.1K | — | 12 |
| AS33254US | OMERESA - Ohio Mid Eastern Regional Education Service Agency | 4.1K | — | 9 |
| AS21854US | DP-IS - Digital Passage, Inc. | 4.1K | 65.5K | 17 |
| AS17138US | MPSP-ENGINEERING - Matt Peterman Sole Proprietor | 4.1K | 4.2K | 15 |
| AS19162US | MBI-AS-1 - The Moody Bible Institute of Chicago | 4.1K | — | 1 |
| AS46598US | SOUTHERN-OHIO-COMMUNICATION-SERVICES - Southern Ohio Communication Services | 4.1K | — | 3 |
| AS14690US | PEORIAUSD11 - Peoria Unified School District | 4.1K | — | 1 |
| AS23420US | AS-DAVENPRO - Davenpro Enterprises LLC | 4.1K | 65.5K | 7 |
| AS33638US | SCOTTS-AS - CITY OF SCOTTSBURG | 4.1K | — | 2 |
| AS19472US | CAROLLO-ENGINEERS - Carollo Engineers | 4.1K | — | 6 |
| AS18826US | AS18826 - 1966 | 4.1K | — | 1 |