216.21.18.0/24
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 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 |
|---|---|---|---|
| 216.21.32.0/19 | AS16399 | First Communications LLC | 8,192 |
| 216.21.64.0/19 | AS16423 | NETTOGO | 8,192 |
| 216.21.128.0/19 | AS21723 | Radiant Communications Ltd. | 8,192 |
| 216.21.96.0/19 | AS15116 | Pittsburg State University | 8,192 |
| 216.21.160.0/20 | AS16591 | Google Fiber Inc. | 4,096 |
| 216.21.192.0/20 | AS33247 | COASTAL TELCO SERVICES, INC. | 4,096 |
| 216.21.184.0/21 | AS53256 | MULBERRY TELEPHONE CO | 2,048 |
| 216.21.24.0/21 | AS40266 | SpeedyQuick Networks Inc | 2,048 |
| 216.21.216.0/21 | AS54225 | ORANGE COUNTY FIBER LLC | 2,048 |
| 216.21.8.0/22 | AS393964 | High Mountain Farm, LLC | 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 |
| 216.21.14.0/24 | AS7377 | RGnet, LLC | 256 |
| 216.21.240.0/24 | AS13649 | Internet Pipeline, Inc. | 256 |
| 216.21.233.0/24 | AS36445 | Coextro | 256 |
| 216.21.17.0/24 | AS400441 | WINAC | 256 |
| 216.21.5.0/24 | AS40279 | ForestRacks | 256 |
| 216.21.230.0/24 | AS40444 | Constant Contact, Inc | 256 |
| 216.21.1.0/24 | AS63476 | SMS Assist, L.L.C. | 256 |
| 216.21.15.0/24 | AS11233 | Gorge Networks LLC | 256 |
Hosted domains
There are no domains currently hosted on this ASN.
Hosted domains API
Pingable IPs
3 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.
| IP Address | ASN | Details |
|---|---|---|
| 216.21.18.2 |
2.97ms from Ashburn,
US
|
Other Pingable IPs
Below is a random selection of 25 IPs that replied to an ICMP ping during our most recent internet scan.
| IP Address | ASN | Details |
|---|---|---|
| 82.170.26.56 |
3.14ms from Amsterdam,
NL
|
|
| 35.172.135.232 |
0.50ms from Ashburn,
US
|
|
| 154.83.190.152 |
0.89ms from Ashburn,
US
|
|
| 216.155.10.248 |
0.20ms from Atlanta,
US
|
|
| 123.112.163.216 |
2.82ms from Beijing,
CN
|
|
| 124.40.247.88 |
1.44ms from Bengaluru,
IN
|
|
| 2.203.239.120 |
9.74ms from Berlin,
DE
|
|
| 47.186.80.216 |
2.47ms from Dallas,
US
|
|
| 5.49.203.232 |
7.13ms from Frankfurt am Main,
DE
|
|
| 162.159.196.152 |
0.10ms from Lisbon,
PT
|
|
| 143.223.12.56 |
0.51ms from London,
GB
|
|
| 5.224.13.72 |
7.72ms from Madrid,
ES
|
|
| 9.144.224.72 |
6.13ms from Minneapolis,
US
|
|
| 98.240.248.248 |
2.96ms from Minneapolis,
US
|
|
| 207.45.221.136 |
0.73ms from Montreal,
CA
|
|
| 153.129.5.72 |
8.77ms from Osaka,
JP
|
|
| 124.103.56.216 |
6.85ms from Osaka,
JP
|
|
| 185.20.171.88 |
4.38ms from Sandefjord,
NO
|
|
| 14.38.31.216 |
1.42ms from Seoul,
KR
|
|
| 80.95.24.200 |
6.44ms from Sofia,
BG
|
|
| 124.11.132.72 |
1.85ms from Taipei,
TW
|
|
| 95.35.196.88 |
1.87ms from Tel Aviv,
IL
|
|
| 38.85.174.232 |
6.60ms from Toronto,
CA
|
|
| 108.78.32.216 |
4.96ms from Atlanta,
US
|
|
| 45.88.147.24 |
0.50ms from Frankfurt am Main,
DE
|
Traceroute
Below is a recent traceroute taken from the IPinfo ProbeNet to an IP in this range. Learn more.
IPinfo ProbeNet
in Sarajevo, BA
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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