ASNs in United States

17,411 Autonomous Systems are registered in United States, ordered by the IPv4 space our directory attributes to each. Page 1 of 175.

Networks 1-100 by IPv4 Space

The badge is how many IPv4 /24 blocks our directory attributes to each network. For the prefixes an AS is announcing right now, open its page.

AS749United States Department of Defense (DoD)
mail.mil
865,162
AS16509Amazon.com, Inc.
amazon.com
612,843
AS7018AT&T Enterprises, LLC
att.com
346,994
AS8075Microsoft Corporation
microsoft.com
292,599
AS7922Comcast Cable Communications, LLC
comcast.com
264,257
AS701Verizon Business
verizonbusiness.com
153,736
AS721United States Department of Defense (DoD)
mail.mil
115,585
AS3356Level 3 Parent, LLC
lumen.com
106,146
AS174Cogent Communications, LLC
cogentco.com
99,774
AS396982Google LLC
google.com
85,949
AS14618Amazon.com, Inc.
amazon.com
78,036
AS6167Verizon Business
verizonbusiness.com
70,364
AS714Apple Inc.
apple.com
66,095
AS209CenturyLink Communications, LLC
lumen.com
61,253
AS22773Cox Communications Inc.
cox.com
50,198
AS22394Verizon Business
verizonbusiness.com
48,354
AS20115Charter Communications LLC
charter.com
47,314
AS7377University of California, San Diego
ucsd.edu
47,274
AS7029Windstream Communications LLC
uniti.com
40,308
AS5650Verizon Business
verizonbusiness.com
39,143
AS3561CenturyLink Communications, LLC
lumen.com
32,334
AS56United States Department of Defense (DoD)
mail.mil
30,993
AS20940Akamai International B.V.
akamai.com
30,506
AS10796Charter Communications Inc
charter.com
29,209
AS2828Verizon Business
verizonbusiness.com
25,664
AS1540Headquarters, USAISC
mail.mil
24,762
AS20001Charter Communications Inc
charter.com
23,967
AS33363Charter Communications, Inc
chartercom.com
22,648
AS11427Charter Communications Inc
charter.com
22,451
AS31898Oracle Corporation
oracle.com
20,742
AS6128Cablevision Systems Corp.
cablevision.com
19,008
AS2914NTT America, Inc.
ntt.net
18,485
AS6079RCN
astound.com
17,789
AS3549Level 3 Parent, LLC
lumen.com
17,643
AS306United States Department of Defense (DoD)
mail.mil
17,548
AS11426Charter Communications Inc
charter.com
17,422
AS6389AT&T Enterprises, LLC
att.com
17,293
AS11351Charter Communications Inc
charter.com
16,856
AS4249Eli Lilly and Company
lilly.com
16,128
AS3257GTT Communications Inc.
gtt.net
16,052
AS16625Akamai Technologies, Inc.
akamai.com
15,992
AS11003The Procter and Gamble Company
pg.com
15,834
AS20057AT&T Enterprises, LLC
att.com
15,547
AS4155USDA
usda.gov
12,289
AS14061DigitalOcean, LLC
digitalocean.com
12,120
AS19901Brightspeed
brightspeed.com
11,911
AS19108Optimum
optimum.com
11,100
AS12271Charter Communications Inc
charter.com
10,882
AS1761General Services Commission
texas.gov
10,754
AS21928T-Mobile USA, Inc.
t-mobile.com
10,294
AS36351IBM Cloud
ibm.com
10,233
AS668United States Department of Defense (DoD)
mail.mil
9,955
AS16591Google Fiber Inc.
gfiber.com
8,720
AS11404Wave Broadband
wavebroadband.com
8,697
AS237Merit Network Inc.
merit.edu
8,631
AS367United States Department of Defense (DoD)
mail.mil
8,276
AS81MCNC
mcnc.org
7,889
AS2152CENIC
cenic.org
7,657
AS5972United States Department of Defense (DoD)
mail.mil
7,272
AS3Massachusetts Institute of Technology
mit.edu
7,168
AS270National Aeronautics and Space Administration
nasa.gov
7,088
AS4181TDS TELECOM
tdstelecom.com
7,057
AS27064United States Department of Defense (DoD)
mail.mil
6,346
AS7385Allstream Business US, LLC
electriclightwave.com
6,209
AS6461Zayo Bandwidth
zayo.com
6,159
AS9009M247 Europe SRL
m247global.com
5,970
AS3479Board of Regents of the University System of Georgia
usg.edu
5,884
AS10695Wal-Mart Stores, Inc.
walmartstores.com
5,882
AS20473The Constant Company, LLC
vultr.com
5,852
AS15169Google LLC
google.com
5,756
AS30036Mediacom Communications Corp
mediacomcable.com
5,700
AS210Utah Education Network
uen.org
5,558
AS2686AT&T Enterprises, LLC
att.com
5,311
AS47583Hostinger International Limited
hostinger.com
5,103
AS8987Amazon Technologies Inc.
amazon.com
5,030
AS51964ORANGE BUSINESS SERVICES U.S. Inc.
orange.com
4,989
AS11492CABLE ONE, INC.
cableone.biz
4,812
AS7459Grande Communications Networks, LLC
mygrande.com
4,803
AS22561CenturyLink Communications, LLC
centurylink.com
4,751
AS4010Headquarters, USAISC
mail.mil
4,593
AS5006Inteliquent, inc.
inteliquent.com
4,421
AS109CISCO SYSTEMS, INC.
cisco.com
4,402
AS13335Cloudflare, Inc.
cloudflare.com
4,251
AS72Schlumberger Limited
slb.com
4,248
AS8070Microsoft Corporation
microsoft.com
4,195
AS22284U.S. Department of the Interior
usgs.gov
4,173
AS46690Verizon Business
verizonbusiness.com
4,098
AS11776Breezeline
breezeline.com
4,070
AS212238Datacamp Limited
datacamp.co.uk
4,016
AS3371Verizon Business
verizonbusiness.com
3,998
AS7155ViaSat,Inc.
viasat.com
3,954
AS18676Avaya LLC
avaya.com
3,826
AS203020HostRoyale Technologies Pvt Ltd
hostroyale.com
3,728
AS14593Space Exploration Technologies Corporation
spacex.com
3,702
AS637United States Department of Defense (DoD)
mail.mil
3,641
AS20055Wholesail networks LLC
ziplyfiber.com
3,607
AS1226California Department of Technology
ca.gov
3,537
AS600OARnet
osc.edu
3,511
AS12083WideOpenWest Finance LLC
wowway.com
3,445
AS14340Salesforce, Inc.
salesforce.com
3,243

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