🇺🇸 United States
Registry and organization country assignments can differ from the physical location of an IP. Snapshot: 2026-10-04.
1,606,101,920
Delegated IPv4 address slots
32,870
Registered ASNs
712
Hosting ASNs
183,945
Known VPN exit prefixes
Country reference
- ISO code
- US
- Continent
- North America
- Capital
- Washington
- Currency
- USD
- Calling code
- 1
- EU member
- No
- Delegated IPv6 address slots
- 11,655,801,077,400,033,925,603,902,934,220,800
Registry allocations
Allocated and assigned RIR prefixes; address slots are summed across records and may overlap.
| Registry | Prefixes | IPv4 slots | IPv6 slots |
|---|---|---|---|
| APNIC | 451 | 3,239,680 | 27,175,410,858,120,119,623,232,413,237,248 |
| ARIN | 76,785 | 1,573,987,328 | 11,336,828,293,226,993,826,809,222,814,236,672 |
| LACNIC | 5 | 2,048 | 792,281,625,142,643,375,935,439,503,360 |
| RIPE_NCC | 3,659 | 28,872,864 | 291,005,091,689,777,335,795,512,267,243,520 |
Major autonomous systems
Showing up to 200 of 32,870 ASNs assigned to this country, ranked by announced IPv4 prefix address slots. Overlapping announcements count separately.
| ASN | Organization | Category | IPv4 slots | IPv6 prefixes |
|---|---|---|---|---|
| AS16509 | Amazon.com, Inc. | hosting | 233,841,152 | 6,639 |
| AS749 | United States Department of Defense (DoD) | government | 227,875,840 | 0 |
| AS7018 | AT&T Enterprises, LLC | business | 117,391,617 | 64 |
| AS8075 | Microsoft Corporation | hosting | 81,804,288 | 123 |
| AS721 | United States Department of Defense (DoD) | government | 73,210,368 | 2 |
| AS7922 | Comcast Cable Communications, LLC | isp | 68,337,408 | 11 |
| AS396982 | Google LLC | hosting | 51,843,072 | 370 |
| AS714 | Apple Inc. | hosting | 46,106,624 | 492 |
| AS701 | Verizon Business | business | 43,844,608 | 39 |
| AS174 | Cogent Communications, LLC | isp | 38,510,848 | 666 |
| AS3356 | Level 3 Parent, LLC | business | 34,859,424 | 179 |
| AS22394 | Verizon Business | business | 31,018,752 | 100 |
| AS209 | CenturyLink Communications, LLC | isp | 26,402,304 | 34 |
| AS22773 | Cox Communications Inc. | isp | 24,480,768 | 1,503 |
| AS14618 | Amazon.com, Inc. | hosting | 24,012,544 | 676 |
| AS6167 | Verizon Business | business | 18,289,152 | 1,730 |
| AS5650 | Verizon Business | business | 15,772,160 | 8 |
| AS21928 | T-Mobile USA, Inc. | isp | 14,299,136 | 266 |
| AS20115 | Charter Communications LLC | isp | 13,388,032 | 5,505 |
| AS7029 | Windstream Communications LLC | isp | 13,109,760 | 344 |
| AS7377 | University of California, San Diego | education | 12,859,914 | 3 |
| AS4249 | Eli Lilly and Company | business | 10,276,352 | 0 |
| AS10796 | Charter Communications Inc | isp | 9,936,128 | 16 |
| AS3257 | GTT Communications Inc. | isp | 9,598,464 | 64 |
| AS3561 | CenturyLink Communications, LLC | isp | 8,492,416 | 24 |
Largest cities by reference population
GeoNames reference data; this is not a count of located IP addresses.
- New York City · 8,804,190
- Los Angeles · 3,820,914
- Brooklyn · 2,736,074
- Chicago · 2,664,452
- Queens · 2,316,841
- Houston · 2,314,157
- Phoenix · 1,650,070
- Philadelphia · 1,573,916
- San Antonio · 1,526,656
- Manhattan · 1,487,536
Hosting counts use ASN organization classifications. VPN counts include distinct exit prefixes with a source-provided country seen within seven days of this snapshot; zero means no known evidence, not absence. Country and city references: GeoNames (CC BY 4.0).