128.231.3.0/24

AS3527 · National Institutes of Health

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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:      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


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

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

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	`4.42ms` 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
81.241.56.248	AS5432 Proximus NV	`5.11ms` from Amsterdam, NL
210.54.74.8	AS4771 Spark New Zealand Trading Ltd.	`0.53ms` from Auckland, NZ
34.134.140.248	AS396982 Google LLC	`0.11ms` from Council Bluffs, US
109.79.75.168	AS15502 Vodafone Ireland Limited	`6.33ms` from Dublin, IE
90.201.121.104	AS5607 Sky UK Limited	`1.56ms` from London, GB
75.222.11.248	AS6167 Verizon Business	`14.91ms` from Los Angeles, US
73.27.66.120	AS7922 Comcast Cable Communications, LLC	`8.80ms` from Miami, US
5.164.192.120	AS42682 JSC "ER-Telecom Holding"	`6.34ms` from Moscow, RU
191.209.70.56	AS26599 TELEFÔNICA BRASIL S.A	`6.86ms` from Osasco, BR
34.90.115.232	AS396982 Google LLC	`0.13ms` from Oudeschip, NL
177.206.100.8	AS18881 TELEFÔNICA BRASIL S.A	`8.97ms` from Rio de Janeiro, BR
34.8.209.120	AS396982 Google LLC	`0.08ms` from Santiago de Queretaro, MX
121.175.44.56	AS4766 Korea Telecom	`7.16ms` from Seoul, KR
102.159.183.152	AS37705 TOPNET	`1.44ms` from Tunis, TN
108.143.165.40	AS8075 Microsoft Corporation	`0.23ms` from Amsterdam, NL
173.45.22.136	AS15338 CEROBI LLC	`0.40ms` from Ashburn, US
152.97.75.232	AS21766 BEN LOMAND RURAL TELEPHONE COOPERATIVE, INC.	`6.94ms` from Atlanta, US
111.207.220.8	AS4808 China Unicom Beijing Province Network	`2.90ms` from Beijing, CN
117.9.35.200	AS4837 CHINA UNICOM China169 Backbone	`5.12ms` from Beijing, CN
34.209.81.152	AS16509 Amazon.com, Inc.	`0.22ms` from Boardman, US
100.0.240.216	AS701 Verizon Business	`2.20ms` from Boston, US
14.177.9.56	AS45899 VNPT Corp	`1.15ms` from Hanoi, VN
175.16.202.168	AS4837 CHINA UNICOM China169 Backbone	`14.85ms` from Liaoyang, CN
49.192.182.168	AS4804 Microplex PTY LTD	`2.56ms` from Perth, AU
44.211.186.40	AS14618 Amazon.com, Inc.	`0.18ms` from Reston, 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 128.231.3.53

traceroute to 128.231.3.53 (128.231.3.53): 9 hops max, 52 byte packets

6 [] 206.81.80.77 105.947 ms

7 *

8 *

9 *

Measurement taken from

IPinfo ProbeNet in Tokyo, JP

On October 9th 2025

What are IP address ranges?

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