Comcast CableComcast CableIP Ranges96,034Total IPs60,831,058 AS33667 US DK Chicago Houston Denver+2447 more
AT&T InternetAT&T InternetIP Ranges53,811Total IPs74,819,537 AS7018 US GB CA+8 more Houston Chicago San Diego+1629 more
Cogent CommunicationsCogent CommunicationsIP Ranges19,343Total IPs22,946,997 AS174 US GB CA+75 more Washington New York Los Angeles+1560 more
LumenLumenIP Ranges10,180Total IPs32,396,332 AS3356 US GB BR+45 more Houston Wichita New York+1098 more
Verizon Internet ServicesVerizon Internet ServicesIP Ranges9,181Total IPs30,591,108 AS701 US MX GB+2 more Washington Brooklyn New York+1211 more
Comcast BusinessComcast BusinessIP Ranges8,776Total IPs7,365,080 AS53851 US Denver Portland Atlanta+2019 more
AT&T BusinessAT&T BusinessIP Ranges6,137Total IPs16,198,862 AS6269 US PR Chicago Atlanta Houston+1244 more
Verizon Fios BusinessVerizon Fios BusinessIP Ranges5,055Total IPs1,529,855 AS701 US New York Brooklyn Queens+821 more
Optimum OnlineOptimum OnlineIP Ranges4,338Total IPs4,296,356 AS6128 US Brooklyn The Bronx Great Neck+335 more
Astound BroadbandAstound BroadbandIP Ranges2,611Total IPs4,223,850 AS6079 US AM MU+14 more Ashburn Chicago Upper Darby+224 more
Crown CastleCrown CastleIP Ranges821Total IPs937,263 AS46887 US CA New York Alexandria Magnolia+234 more
US Department of DefenseUS Department of DefenseIP Ranges778Total IPs4,337,408 AS668 US Yuma Dayton Huntsville+88 more
WhiteSky Communications, LLCWhiteSky Communications, LLCIP Ranges293Total IPs162,047 AS54119 US Dallas Carbondale Columbus+92 more
365 Data Centers365 Data CentersIP Ranges154Total IPs126,648 AS29838 US GB New York Silver Spring Los Angeles+32 more
AT&T Internet ServicesAT&T Internet ServicesIP Ranges150Total IPs742,408 AS4185 US GB NL+4 more Coppell Vienna Washington+23 more
National Institutes of HealthNational Institutes of HealthIP Ranges60Total IPs333,312 AS3527 US Bethesda Boonsboro Durham+12 more
Allied Telecom Group, LLCAllied Telecom Group, LLCIP Ranges41Total IPs78,592 AS22925 US Washington Warrenton Woodbridge+8 more
University of MarylandUniversity of MarylandIP Ranges27Total IPs249,856 AS10886 US College Park Capitol Heights Annapolis+8 more
US National Institute of Standards & TechnologyUS National Institute of Standards & TechnologyIP Ranges19Total IPs65,536 AS49 US Rockville Gaithersburg Hagerstown+3 more
US Food and Drug AdministrationUS Food and Drug AdministrationIP Ranges12Total IPs65,536 AS22828 US Hyattsville Rockville
National Library of MedicineNational Library of MedicineIP Ranges8Total IPs67,840 AS70 US Gaithersburg Rockville Silver Spring
Bloomingdale Home TelephoneBloomingdale Home TelephoneIP Ranges6Total IPs2,816 AS54239 US Rockville Bloomingdale
ZeniMax Media IncorporatedZeniMax Media IncorporatedIP Ranges4Total IPs1,536 AS18733 US Dallas Richardson Rockville
Montgomery County Government, MarylandMontgomery County Government, MarylandIP Ranges4Total IPs1,792 AS40468 US Rockville
The Internet & Television AssociationThe Internet & Television AssociationIP Ranges2Total IPs256 AS26868 US Rockville