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	`4.38ms` 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
122.108.97.184	AS4804 Microplex PTY LTD	`5.79ms` from Adelaide, AU
178.59.242.232	AS3329 VODAFONE-PANAFON HELLENIC TELECOMMUNICATIONS COMPANY SA	`4.42ms` from Athens, GR
54.218.221.168	AS16509 Amazon.com, Inc.	`0.18ms` from Boardman, US
179.221.109.232	AS28573 Claro NXT Telecomunicacoes Ltda	`6.33ms` from Brasilia, BR
41.42.97.56	AS8452 TE-AS	`7.58ms` from Cairo, EG
189.34.4.184	AS28573 Claro NXT Telecomunicacoes Ltda	`12.73ms` from Curitiba, BR
92.218.244.72	AS3209 Vodafone GmbH	`11.42ms` from Frankfurt am Main, DE
77.128.113.88	AS15557 Societe Francaise Du Radiotelephone - SFR SA	`10.53ms` from Lyon, FR
92.172.106.56	AS12479 Orange Espagne SA	`1.97ms` from Madrid, ES
187.2.245.72	AS28573 Claro NXT Telecomunicacoes Ltda	`5.43ms` from Sao Paulo, BR
46.217.234.104	AS6821 Makedonski Telekom AD-Skopje	`6.49ms` from Sofia, BG
173.238.67.168	AS7992 Cogeco Connexion Inc.	`9.14ms` from Toronto, CA
37.8.242.24	AS29314 VECTRA S.A.	`18.43ms` from Warsaw, PL
5.185.246.40	AS5617 Orange Polska Spolka Akcyjna	`16.77ms` from Warsaw, PL
18.254.184.120	AS8987 Amazon Data Services Ireland Ltd	`1.06ms` from Columbus, US
192.129.131.104	AS54290 Hostwinds LLC.	`0.25ms` from Dallas, US
109.78.58.56	AS15502 Vodafone Ireland Limited	`2.08ms` from Dublin, IE
88.208.143.152	AS12355 HeLi NET Telekommunikation GmbH & Co.	`5.34ms` from Duesseldorf, DE
91.63.147.200	AS3320 Deutsche Telekom AG	`7.36ms` from Frankfurt am Main, DE
112.12.33.184	AS56041 China Mobile communications corporation	`7.78ms` from Hangzhou, CN
43.252.148.8	AS58411 GTDCL-HK	`1.33ms` from Hong Kong, HK
39.39.140.88	AS17557 Pakistan Telecommunication Company Limited	`8.22ms` from Lahore, PK
113.231.113.104	AS4837 CHINA UNICOM China169 Backbone	`6.04ms` from Liaoyang, CN
213.105.58.120	AS5089 Virgin Media Limited	`8.91ms` from London, GB
189.191.125.56	AS8151 UNINET	`1.08ms` from Mexico City, MX

Traceroute

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

traceroute -a -n -q1 -m8 128.231.3.229

traceroute to 128.231.3.229 (128.231.3.229): 8 hops max, 52 byte packets

1 [AS39819] 91.213.233.1 1.158 ms

2 *

3 *

4 *

5 [AS61010] 185.20.123.46 2.539 ms

6 *

7 *

8 *

Measurement taken from

IPinfo ProbeNet in Bishkek, KG

On November 28th 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