Comcast CableComcast CableIP Ranges96,034Total IPs60,831,058 AS33667 US DK Chicago Houston Denver+2447 more
Cogent CommunicationsCogent CommunicationsIP Ranges19,343Total IPs22,946,997 AS174 US GB CA+75 more Washington New York Los Angeles+1560 more
CenturyLinkCenturyLinkIP Ranges13,975Total IPs25,359,655 AS203 US GB CA+11 more Phoenix Denver Seattle+1246 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
Verizon WirelessVerizon WirelessIP Ranges7,440Total IPs21,979,101 AS6167 US CR Salt Lake City Nashville Fort Worth+749 more
Verizon Fios BusinessVerizon Fios BusinessIP Ranges5,055Total IPs1,529,855 AS701 US New York Brooklyn Queens+821 more
Granite Telecommunications LLCGranite Telecommunications LLCIP Ranges94Total IPs239,359 AS16504 US Tampa Gaithersburg Las Vegas+38 more
National Institutes of HealthNational Institutes of HealthIP Ranges60Total IPs333,312 AS3527 US Bethesda Boonsboro Durham+12 more
U.S. Dept. of Health and Human ServicesU.S. Dept. of Health and Human ServicesIP Ranges44Total IPs300,544 AS26810 US Havre de Grace Millersville Douglasville+9 more
US National Institute of Standards & TechnologyUS National Institute of Standards & TechnologyIP Ranges19Total IPs65,536 AS49 US Rockville Gaithersburg Hagerstown+3 more
National Library of MedicineNational Library of MedicineIP Ranges8Total IPs67,840 AS70 US Gaithersburg Rockville Silver Spring
Montgomery County Public SchoolsMontgomery County Public SchoolsIP Ranges6Total IPs64,512 AS32073 US Bethesda Gaithersburg
The Scientific Consulting GroupThe Scientific Consulting GroupIP Ranges1Total IPs256 AS22831 US Gaithersburg