128.231.3.0/24

AS3527 · National Institutes of Health

Need more data or want to access it via API or data downloads? Sign up to get free access

Summary

Country	United States
Domain	nih.gov
ASN	AS3527
Parent Range	128.231.0.0/16
Registry	ARIN
ID	NIHNET-1

WHOIS Details

NetHandle:      NET-128-231-0-0-1
OrgID:          NIH-Z
Parent:         NET-128-0-0-0-0
NetName:        NIHNET-1
NetRange:       128.231.0.0 - 128.231.255.255
NetType:        allocation
RegDate:        1987-05-06
Updated:        2022-10-28
Source:         ARIN


OrgID:          NIH-Z
OrgName:        National Institutes of Health
CanAllocate:    
Street:         9000 Rockville Pike
Street:         MSC 4805
City:           Bethesda
State/Prov:     MD
Country:        US
PostalCode:     20892-4805
RegDate:        2022-10-09
Updated:        2025-06-05
OrgAdminHandle: NIHAD-ARIN
OrgTechHandle:  NIHTE-ARIN
OrgAbuseHandle: NIHTE-ARIN
OrgNOCHandle:   NIHAD-ARIN
OrgRoutingHandle:   NIHTE-ARIN
OrgDNSHandle:   NIHAD-ARIN
Source:         ARIN


POCHandle:      NIHTE-ARIN
IsRole:         Y
LastName:       NIHtechs
FirstName:      
Street:         6555 Rock Sping Dr
Street:         RM 3se21m MSC 4805
City:           Bethesda
State/Prov:     MD
Country:        US
PostalCode:     20892-4805
RegDate:        2020-06-24
Updated:        2025-04-08
OfficePhone:    +1-301-402-3141
Mailbox:        citnsarin@mail.nih.gov
Source:         ARIN


POCHandle:      NIHAD-ARIN
IsRole:         Y
LastName:       NIHadm
FirstName:      
Street:         6555 Rock Sping DrRM 3se21m MSC 4805
City:           Bethesda
State/Prov:     MD
Country:        US
PostalCode:     20892-4805
RegDate:        2020-08-11
Updated:        2025-04-08
OfficePhone:    +1-301-402-3141
Mailbox:        citnsarin@mail.nih.gov
Source:         ARIN

Overlapping Ranges

BGP prefixes that contain 128.231.3.0/24

Range	ASN	Company	Num of IPs
128.231.0.0/16	AS3527	National Institutes of Health	65,536

Nearby Ranges

BGP prefixes that overlap with 128.231.0.0/16

Range	ASN	Company	Num of IPs
128.231.0.0/16	AS3527	National Institutes of Health	65,536

Hosted domains

There are no domains currently hosted on this ASN.

Hosted domains API

Our Hosted Domains API, or Reverse IP API returns a full list of domains that are hosted on a single IP address.

Useful for Cybersecurity

Read more

Pingable IPs

5 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address	ASN	Details
128.231.3.12	AS3527 National Institutes of Health	`4.39ms` 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
94.57.232.8	AS5384 Emirates Internet	`19.89ms` from Al Fujairah City, AE
213.49.136.168	AS5432 Proximus NV	`5.18ms` from Amsterdam, NL
35.205.178.248	AS396982 Google LLC	`0.15ms` from Brussels, BE
97.176.230.88	AS6167 Verizon Business	`9.06ms` from Chicago, US
34.57.165.120	AS396982 Google LLC	`0.12ms` from Council Bluffs, US
78.180.132.136	AS47331 TTNet A.S.	`5.49ms` from Istanbul, TR
86.162.22.216	AS2856 British Telecommunications PLC	`5.92ms` from London, GB
103.1.56.136	AS7545 TPG Telecom Limited	`1.63ms` from Melbourne, AU
67.82.61.216	AS6128 Cablevision Systems Corp.	`8.38ms` from New York City, US
125.201.72.88	AS4713 NTT DOCOMO BUSINESS,Inc.	`2.86ms` from Osaka, JP
18.228.82.168	AS16509 Amazon.com, Inc.	`0.15ms` from Osasco, BR
131.252.89.104	AS6366 Portland State University	`0.83ms` from Portland, US
221.0.33.72	AS4837 CHINA UNICOM China169 Backbone	`5.92ms` from Qingdao, CN
205.174.2.200	AS14630 Invesco Group Services, Inc.	`1.37ms` from Reston, US
177.124.193.152	AS17222 MUNDIVOX DO BRASIL LTDA	`0.78ms` from Rio de Janeiro, BR
189.129.59.184	AS8151 UNINET	`9.60ms` from Santiago de Queretaro, MX
126.114.206.200	AS17676 SoftBank Corp.	`2.87ms` from Tokyo, JP
20.124.48.184	AS8075 Microsoft Corporation	`0.43ms` from Ashburn, US
23.66.124.168	AS20940 Akamai International B.V.	`0.20ms` from Chicago, US
34.16.192.184	AS396982 Google LLC	`0.12ms` from Las Vegas, US
133.114.165.184	AS2527 Sony Network Communications Inc.	`9.49ms` from Osaka, JP
54.146.20.216	AS14618 Amazon.com, Inc.	`0.20ms` from Reston, US
49.169.133.40	AS17858 LG POWERCOMM	`7.00ms` from Seoul, KR
189.26.177.184	AS18881 TELEFÔNICA BRASIL S.A	`11.67ms` from São Paulo, BR
75.143.235.248	AS20115 Charter Communications LLC	`10.01ms` from Atlanta, US

Traceroute

Below is a recent traceroute taken from the IPinfo ProbeNet to an IP in this range. Learn more.

traceroute -a -n -q1 -f6 -m9 128.231.3.130

traceroute to 128.231.3.130 (128.231.3.130): 9 hops max, 52 byte packets

6 [] 206.81.80.77 82.082 ms

7 *

8 *

9 *

Measurement taken from

IPinfo ProbeNet in Tokyo, JP

On November 14th 2025

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.

An API built with users in mind: reliable, accurate, and easy-to-use

Discover why industry-leading companies around the globe love our data. IPinfo's accurate insights fuel use cases from cybersecurity, data enrichment, web personalization, and much more.

Get Started for Free Contact Sales