216.21.19.0/24
AS5721 · National Defense University
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Country |
United States
|
Domain | ndu.edu |
ASN | AS5721 |
Registry | ARIN |
ID | NATIONAL-DEFENSE-UNIVERSITY |
WHOIS Details
NetHandle: NET-216-21-18-0-1 OrgID: NDU-1 Parent: NET-216-0-0-0-0 NetName: NATIONAL-DEFENSE-UNIVERSITY NetRange: 216.21.18.0 - 216.21.19.255 NetType: allocation OriginAS: 5721 Comment: http://ndu.edu RegDate: 2015-07-08 Updated: 2021-12-14 Source: ARIN OrgID: NDU-1 OrgName: National Defense University CanAllocate: Street: Ft. McNair, Bldg. 62 City: Washington State/Prov: DC Country: US PostalCode: 20319-6000 RegDate: 1994-10-04 Updated: 2015-05-07 OrgAdminHandle: CJH19-ARIN OrgTechHandle: CJH19-ARIN OrgAbuseHandle: CJH19-ARIN Source: ARIN POCHandle: CJH19-ARIN IsRole: N LastName: hartley FirstName: christopher Street: National Defense University Street: 260 5th Ave, Bldg 64 Abraham Lincoln Hall City: Washington State/Prov: DC Country: US PostalCode: 20319-5066 RegDate: 2015-04-24 Updated: 2015-04-24 OfficePhone: +1-202-685-4716 Mailbox: [email protected] Source: ARIN
Nearby Ranges
BGP prefixes that overlap with 216.21.0.0/16
Range | ASN | Company | Num of IPs |
---|---|---|---|
216.21.64.0/19 | AS16423 | NETTOGO | 8,192 |
216.21.32.0/19 | AS16399 | First Communications LLC | 8,192 |
216.21.128.0/19 | AS15247 | Radiant Communications Ltd. | 8,192 |
216.21.96.0/19 | AS15116 | Pittsburg State University | 8,192 |
216.21.192.0/20 | AS33247 | COASTAL TELCO SERVICES, INC. | 4,096 |
216.21.160.0/20 | AS16591 | Google Fiber Inc. | 4,096 |
216.21.216.0/21 | AS54225 | ORANGE COUNTY FIBER LLC | 2,048 |
216.21.176.0/21 | AS31920 | Geetingsville Telephone Co., Inc. | 2,048 |
216.21.184.0/21 | AS53256 | MULBERRY TELEPHONE CO | 2,048 |
216.21.24.0/21 | AS40266 | SpeedyQuick Networks Inc | 2,048 |
216.21.24.0/22 | AS40266 | SpeedyQuick Networks Inc | 1,024 |
216.21.208.0/22 | AS26223 | Silver Star Communications | 1,024 |
216.21.212.0/22 | AS395846 | Direct Communications Rockland, Inc | 1,024 |
216.21.28.0/22 | AS40266 | SpeedyQuick Networks Inc | 1,024 |
216.21.2.0/23 | AS715 | WoodyNet, Inc. | 512 |
216.21.236.0/24 | AS19871 | Register.com, Inc | 256 |
216.21.226.0/24 | AS19871 | Register.com, Inc | 256 |
216.21.12.0/24 | AS53334 | Total Uptime Technologies, LLC | 256 |
216.21.14.0/24 | AS7377 | RGnet, LLC | 256 |
216.21.238.0/24 | AS19871 | Register.com, Inc | 256 |
216.21.229.0/24 | AS13913 | DGA Security Systems, Inc. | 256 |
216.21.224.0/24 | AS19871 | Register.com, Inc | 256 |
216.21.230.0/24 | AS19871 | Constant Contact, Inc | 256 |
216.21.17.0/24 | AS30372 | WINAC | 256 |
216.21.245.0/24 | AS7381 | Internet Pipeline, Inc. | 256 |
216.21.233.0/24 | AS36445 | Coextro | 256 |
216.21.228.0/24 | AS13913 | DGA Security Systems, Inc. | 256 |
216.21.26.0/24 | AS40266 | SpeedyQuick Networks Inc | 256 |
216.21.240.0/24 | AS13649 | Internet Pipeline, Inc. | 256 |
216.21.232.0/24 | AS19871 | Register.com, Inc | 256 |
216.21.15.0/24 | AS63069 | Gorge Networks LLC | 256 |
216.21.237.0/24 | AS13768 | Register.com, Inc | 256 |
216.21.13.0/24 | AS53334 | Total Uptime Technologies, LLC | 256 |
216.21.246.0/24 | AS7381 | Internet Pipeline, Inc. | 256 |
216.21.244.0/24 | AS13649 | Internet Pipeline, Inc. | 256 |
216.21.227.0/24 | AS19871 | Register.com, Inc | 256 |
216.21.247.0/24 | AS13649 | Internet Pipeline, Inc. | 256 |
216.21.231.0/24 | AS19871 | Register.com, Inc | 256 |
216.21.18.0/24 | AS5721 | National Defense University | 256 |
216.21.27.0/24 | AS40266 | SpeedyQuick Networks Inc | 256 |
Hosted domains
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What are IP address ranges?
IP address ranges, or netblocks, are groups of related IP addresses. They are usually represented as a base IP address, followed by a slash, and then a netmask which represents how many IP addresses are contained within the netblock. This format is known as CIDR. You'll also sometimes see netblocks given as a start ip address, and an end ip address, or an ip address range.
Traffic works its way around the internet based on the routing table, which contains a list of networks and their associated netblocks.
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