IP Addresses

IP Address Autonomous System Number (ASN) Internet Service Provider (ISP) / Organization Location AS3527 National Institutes of Health National Institutes of Health United States of America

Server Locations

Location20817 Bethesda, Maryland, United States of America (US)
Latitude39.0032° (39° 0′ 11″ N)
Longitude-77.1602° (77° 9′ 36″ W)
Local Time

IP WHOIS Information

IP Address Range156.40.198.0 -
Subnet Size14,848 IP addresses
CIDR Notation156.40.198.0/23,,,
Net NameNIHNET-3
Net HandleNET-156-40-198-0-1
Net TypeDirect Allocation
Date Registered
Date Updated
Net Reference
RegistrantNational Institutes of Health (NIH), 6555 Rock Spring Drive, Bethesda MD 20817, United States (US),

IANA IPv4 Address Space Allocation

DesignationAdministered by ARIN
Allocation Date
StatusLEGACY - allocated by the central Internet Registry (IR) prior to the Regional Internet Registries (RIRs). This address space is now administered by individual RIRs as noted, including maintenance of WHOIS Directory and reverse DNS records. Assignments from these blocks are distributed globally on a regional basis.

DNS Resource Records

In this section you will find important DNS resource records for SOA records, Name Server records, and MX records are included when available. Additional supporting data includes serial numbers, refresh rates, retry times, TTL, priority, and length to expire will be shown.

Node Name Class Type Data TTL IN A IN AAAA 2607:f220:404:2102::9c28:f218

Domain WHOIS Information

This is the WHOIS information that includes important registration and owner details. Where applicable, you will find registrar info, important dates, name servers, and registration data. Registration data in most cases will include the Name, Organization, Address, City, State or Province, Postal Code, Country, Phone Number, and email address for Registrant, Administrative, and Technical contacts.