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United States

Autonomous systems and IP prefixes registered in United States.

Registered ASNs
29,968
IPv4 Prefixes
102,715
IPv6 Prefixes
19,172

Largest Networksby registered prefixes

#ASNNamePrefixes
1AS16509ARINAMAZON-02 - Amazon.com, Inc.3,262
2AS3257RIPENCCGTT-BACKBONE GTT Communications Inc.928
3AS11404ARINAS-WAVE-1 - Wave Broadband909
4AS6079ARINRCN-AS - RCN873
5AS22773ARINASN-CXA-ALL-CCI-22773-RDC - Cox Communications Inc.856
6AS9294APNICGNETINC-AS-AP GNET INC.855
7AS2914ARINNTT-DATA-2914 - NTT America, Inc.741
8AS7029ARINWINDSTREAM - Windstream Communications LLC635
9AS749ARINDNIC-AS-00749 - United States Department of Defense DoD617
10AS174ARINCOGENT-174 - Cogent Communications, LLC616
11AS29802ARINHVC-AS - HIVELOCITY, Inc.532
12AS20473ARINAS-VULTR - The Constant Company, LLC509
13AS396356ARINLATITUDE-SH - Latitude.sh478
14AS36692ARINCISCO-UMBRELLA - Cisco OpenDNS, LLC442
15AS3356ARINLEVEL3 - Level 3 Parent, LLC430
16AS21859ARINZEN-ECN - Zenlayer Inc420
17AS39855RIPENCCMOD-EU Mod Mission Critical LLC394
18AS7018ARINATT-INTERNET4 - AT&T Enterprises, LLC355
19AS5650ARINFRONTIER-FRTR - Frontier Communications of America, Inc.335
20AS14593ARINSPACEX-STARLINK - Space Exploration Technologies Corporation312
21AS399077ARINTERAEXCH - Tcloudnet308
22AS400619ARINAROSS-AS - AROSSCLOUD INC.307
23AS32167ARINLSHIY-USER-CONTENT - LSHIY LLC294
24AS13335ARINCLOUDFLARENET - Cloudflare, Inc.285
25AS5065ARINBUNNY-COMMUNICATIONS-GLOBAL - Bunny Communications274
26AS3561ARINCENTURYLINK-LEGACY-SAVVIS - CenturyLink Communications, LLC265
27AS399073ARINTBB-ASN - BUNNY TECHNOLOGY LLC258
28AS396982ARINGOOGLE-CLOUD-PLATFORM - Google LLC254
29AS26383ARINASNET - Baxet Group Inc.242
30AS53813ARINZSCALER-INC - ZSCALER, INC.241
31AS395793ARINARISK-COMMUNICATIONS-INC - Arisk Communications inc.238
32AS30058ARINFDCSERVERS - FDCservers.net236
33AS14265ARINUS-TELEPACIFIC - TPx Communications229
34AS63139ARINBEDGE-CO-LIMITED - BEDGE CO LIMITED225
35AS14618ARINAMAZON-AES - Amazon.com, Inc.221
36AS51964RIPENCCORANGE-BUSINESS-SERVICES-IPSN-ASN ORANGE BUSINESS SERVICES U.S. Inc.213
37AS209242RIPENCCCLOUDFLARESPECTRUM Cloudflare London, LLC197
38AS61317RIPENCCASDETUK Hivelocity LLC190
39AS48818RIPENCCAS-NETSER-INC NETSER INC187
40AS209372RIPENCCWSTelecom_Customers WS Telecom Inc186
41AS3360ARINDXC-AS3360 - DXC US Latin America Corporation183
42AS63199ARINCDSC-AS1 - CDS Global Cloud Co., Ltd183
43AS55256ARINNETSKOPE - Netskope Inc181
44AS7155ARINVIASAT-SP-BACKBONE - ViaSat,Inc.169
45AS7381ARINSRS-6-Z-7381 - BroadbandONE, LLC165
46AS10753ARINLUMEN-LEGACY-L3-CUSTOMER-SHARED-USE - Level 3 Parent, LLC164
47AS401362ARINHOST4NERD - HOST4NERD LLC158
48AS213541RIPENCCws-telecom-sdn WS Telecom Inc157
49AS40676ARINAS40676 - Psychz Networks151
50AS701ARINUUNET - Verizon Business146
51AS204957RIPENCCGREENFLOID-AS ROUTE 95 LLC143
52AS397423ARINTIER-NET - Tier.Net Technologies LLC143
53AS401783ARINTOKALA-COMMUNICATIONS - TOKALA COMMUNICATIONS INC.142
54AS17378ARINAS17378 - TierPoint, LLC139
55AS6461ARINZAYO-6461 - Zayo Bandwidth137
56AS16625ARINAKAMAI-AS - Akamai Technologies, Inc.135
57AS63023ARINAS-GLOBALTELEHOST - GTHost135
58AS7393ARINCYBERCON - CYBERCON, INC.134
59AS31898ARINORACLE-BMC-31898 - Oracle Corporation134
60AS209ARINCENTURYLINK-US-LEGACY-QWEST - CenturyLink Communications, LLC133
61AS22616ARINZSCALER-SJC1 - ZSCALER, INC.131
62AS54801ARINZILLION-NETWORK - Zillion Network Inc.129
63AS984ARINOWS-NETWORK - OCTOPUS WEB SOLUTION INC126
64AS63473ARINHOSTHATCH - HostHatch, LLC124
65AS7979ARINSERVERS-COM - Servers.com, Inc.120
66AS36352ARINAS-COLOCROSSING - HostPapa119
67AS401701ARINCOGNETCLOUD-2 - cognetcloud INC119
68AS21769ARINAS-COLOAM - Colocation America Corporation113
69AS40285ARINNORTHLAND-CABLE - NORTHLAND CABLE TELEVISION INC.113
70AS56ARINDNIC-AS-00056 - United States Department of Defense DoD107
71AS3549ARINLVLT-3549 - Level 3 Parent, LLC106
72AS64267ARINAS-SPRIOUS - Sprious LLC105
73AS401152ARINADCIL-ASN-01 - Ace Data Centers II, L.L.C.104
74AS7922ARINCOMCAST-7922 - Comcast Cable Communications, LLC99
75AS401650ARINVL - 888 Ventures LLC98
76AS3573ARINACCENTURE - Accenture LLP97
77AS54483ARINGEOLINKS-AS - GeoLinks96
78AS13649ARINASN-FLEXENTIAL - Flexential Colorado Corp.93
79AS46261ARINQUICKPACKET - QuickPacket, LLC91
80AS19318ARINIS-AS-1 - Interserver, Inc87
81AS17306ARINRISE-BROADBAND - JAB Wireless, INC.86
82AS26548ARINPUREVOLTAGE-INC - PureVoltage Hosting Inc.86
83AS32043ARINNEO-FIBER-01 - NeoFiber Communications inc.86
84AS40065ARINCNSERVERS - CNSERVERS LLC86
85AS62468ARINHKCLOUDX - VpsQuan L.L.C.86
86AS214483RIPENCCFIBERPOWER-AS FiberPower LLC86
87AS11776ARINATLANTICBB-JOHNSTOWN - Breezeline85
88AS14061ARINDIGITALOCEAN-ASN - DigitalOcean, LLC85
89AS11696ARINNBS11696 - Fusion, LLC84
90AS4181ARINTDS-AS - TDS TELECOM83
91AS63150ARINBAGE - BAGE CLOUD LLC82
92AS214036RIPENCCULTAHOST-AS Ultahost, Inc.82
93AS270ARINAS270 - National Aeronautics and Space Administration81
94AS30633ARINLEASEWEB-USA-WDC - Leaseweb USA, Inc.81
95AS55201ARINSKYQUANTUM-INTERNET-SERVICE - SkyQuantum Internet Service81
96AS2828ARINXO-AS15 - Verizon Business80
97AS25653ARINFORTRESSITX - FortressITX80
98AS395447ARINHONORHEALTH - HonorHealth77
99AS11179ARINARYAKA-ARIN - Aryaka Networks, Inc.76
100AS63099ARINMADEALA TELECOM TECHNOLOGY - MADEALA TELECOM TECHNOLOGY INC76

Threat map: malicious IPs in United States

2,611 flagged IPv4 networks on 2026-10-11, #1 of 179 countries; 1.62 per million allocated IPv4 addresses (#74 by rate).

IP Address Transfers

Last 12 months: 4,768 registry transfers involving organisations in United States, 74.3M IPv4 addresses.

IPv4 received from

  1. 1🇬🇧 United Kingdom887K
  2. 2🇫🇷 France262K
  3. 3🇮🇪 Ireland213K
  4. 4🇨🇦 Canada183K
  5. 5🇩🇪 Germany154K

IPv4 sent to

  1. 1🇭🇰 Hong Kong SAR China2.4M
  2. 2🇩🇪 Germany1.0M
  3. 3🇱🇹 Lithuania930K
  4. 4🇦🇪 United Arab Emirates842K
  5. 5🇬🇧 United Kingdom715K
IPv4 transfers in United States →All transfers for United States →Global IPv4 transfer market →