128.231.0.0/16

AS3527 · National Institutes of Health

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Summary

Country	United States
Domain	nih.gov
ASN	AS3527
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

Nearby Ranges

BGP prefixes that overlap with 128.0.0.0/8

Range	ASN	Company	Num of IPs
128.78.0.0/15	AS5410	Bouygues Telecom SA	131,072
128.178.0.0/15	AS559	Ecublens Camp Net	131,072
128.130.0.0/15	AS679	Technische Universitaet Wien	131,072
128.163.0.0/16	AS396261	University of Kentucky	65,536
128.38.0.0/16	AS37	Navy Network Information Center (NNIC)	65,536
128.255.0.0/16	AS3676	University of Iowa	65,536
128.190.0.0/16	AS367	Headquarters, USAISC	65,536
128.12.0.0/16	AS32	Stanford University	65,536
128.32.0.0/16	AS25	University of California at Berkeley	65,536
128.223.0.0/16	AS3582	University of Oregon	65,536
128.205.0.0/16	AS3685	State University of New York at Buffalo	65,536
128.186.0.0/16	AS2553	Florida State University	65,536
128.163.0.0/16	AS23162	University of Kentucky	65,536
128.135.0.0/16	AS160	The University of Chicago	65,536
128.234.0.0/16	AS25019	Saudi Telecom Company JSC	65,536
128.4.0.0/16	AS2	University of Delaware	65,536
128.33.0.0/16	AS1856	RTX BBN Technologies, Inc.	65,536
128.28.0.0/16	AS2514	NTT PC Communications,Inc.	65,536
128.252.0.0/16	AS2552	Washington University	65,536
128.19.0.0/16	AS27064	DoD Network Information Center	65,536
128.37.0.0/16	AS27064	Headquarters, USAISC	65,536
128.47.0.0/16	AS252	Headquarters, USAISC	65,536
128.93.0.0/16	AS2200	Institut National de Recherche en Informatique et Automatique	65,536
128.100.0.0/16	AS239	University of Toronto	65,536
128.98.0.0/16	AS24775	QinetiQ TIM	65,536
128.22.0.0/16	AS17511	OPTAGE Inc.	65,536
128.233.0.0/16	AS22950	University of Saskatchewan	65,536
128.103.0.0/16	AS198949	Harvard University	65,536
128.27.0.0/16	AS17511	OPTAGE Inc.	65,536
128.210.0.0/16	AS17	Purdue University	65,536
128.170.0.0/16	AS243	L3Harris Technologies, Inc.	65,536
128.3.0.0/16	AS16	Lawrence Berkeley National Laboratory	65,536
128.151.0.0/16	AS20	University of Rochester	65,536
128.211.0.0/16	AS17	Purdue University	65,536
128.117.0.0/16	AS194	National Center for Atmospheric Research	65,536
128.39.0.0/16	AS224	UNINETT backbone network	65,536
128.46.0.0/16	AS17	Purdue University	65,536
128.53.0.0/16	AS2514	NTT PC Communications,Inc.	65,536
128.169.0.0/16	AS16989	The University of Tennessee Health Science Center	65,536
128.124.0.0/16	AS21497	PrJSC VF UKRAINE	65,536
128.87.0.0/16	AS158	Telefonaktiebolaget LM Ericsson	65,536
128.18.0.0/16	AS264	SRI International	65,536
128.110.0.0/16	AS17055	University of Utah	65,536
128.49.0.0/16	AS22	Navy Network Information Center (NNIC)	65,536
128.34.0.0/16	AS22	Navy Network Information Center (NNIC)	65,536
128.1.0.0/16	AS21859	Zenlayer Inc	65,536
128.196.0.0/16	AS1706	The University of Arizona	65,536
128.143.0.0/16	AS225	University of Virginia	65,536
128.10.0.0/16	AS17	Purdue University	65,536

Hosted domains

There are 11 domain names hosted across 7 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
128.231.198.5	nci-wiki.com	3
128.231.19.104	ncats.io	2
128.231.198.7	niaid.health	2
128.231.198.6	nih.app	1
128.231.91.30	genome.gov	1
128.231.19.108	tox21.gov	1
128.231.89.150	hhsoig.gov	1

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

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

IP Address	ASN	Details
128.231.148.133	AS3527 National Institutes of Health	`4.39ms` from Washington, US
128.231.255.77	AS3527 National Institutes of Health	`4.54ms` from Washington, US
128.231.153.33	AS3527 National Institutes of Health	`4.43ms` from Washington, US
128.231.244.194	AS3527 National Institutes of Health	`1.76ms` from Ashburn, US
128.231.210.87	AS3527 National Institutes of Health	`3.00ms` from Ashburn, US
128.231.152.219	AS3527 National Institutes of Health	`2.91ms` from Ashburn, US
128.231.243.142	AS3527 National Institutes of Health	`2.99ms` from Ashburn, US
128.231.1.195	AS3527 National Institutes of Health	`4.80ms` from Ashburn, US
128.231.125.179	AS3527 National Institutes of Health	`3.08ms` from Ashburn, US
128.231.3.15	AS3527 National Institutes of Health	`4.40ms` from Ashburn, US
128.231.17.25	AS3527 National Institutes of Health	`3.10ms` from Ashburn, US
128.231.90.199	AS3527 National Institutes of Health	`3.15ms` from Ashburn, US
128.231.58.117	AS3527 National Institutes of Health	`4.70ms` from Ashburn, US
128.231.89.36	AS3527 National Institutes of Health	`3.36ms` from Ashburn, US
128.231.19.88	AS3527 National Institutes of Health	`3.03ms` from Ashburn, US
128.231.128.231	AS3527 National Institutes of Health	`3.10ms` from Ashburn, US
128.231.91.241	AS3527 National Institutes of Health	`3.08ms` from Ashburn, US
128.231.87.83	AS3527 National Institutes of Health	`4.51ms` from Washington, US
128.231.124.156	AS3527 National Institutes of Health	`3.07ms` from Ashburn, US
128.231.88.40	AS3527 National Institutes of Health	`4.50ms` from Washington, US
128.231.2.76	AS3527 National Institutes of Health	`2.99ms` 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
73.212.164.96	AS7922 Comcast Cable Communications, LLC	`7.89ms` from Ashburn, US
80.136.87.32	AS3320 Deutsche Telekom AG	`2.24ms` from Berlin, DE
80.84.196.0	AS35205 RFT kabel Brandenburg GmbH	`1.35ms` from Berlin, DE
179.221.106.224	AS28573 Claro NXT Telecomunicacoes Ltda	`6.07ms` from Brasilia, BR
34.248.16.112	AS16509 Amazon.com, Inc.	`0.28ms` from Dublin, IE
93.208.77.192	AS3320 Deutsche Telekom AG	`6.22ms` from Frankfurt am Main, DE
95.117.231.112	AS6805 Telefonica Germany GmbH & Co.OHG	`10.15ms` from Frankfurt am Main, DE
109.134.211.96	AS5432 Proximus NV	`6.25ms` from Gravelines, FR
67.77.206.0	AS209 CenturyLink Communications, LLC	`2.27ms` from Las Vegas, US
47.192.196.240	AS5650 Frontier Communications of America, Inc.	`12.60ms` from Miami, US
93.46.182.144	AS12874 Fastweb SpA	`1.40ms` from Milan, IT
163.131.43.48	AS10000 Nagasaki Cable Media Inc.	`14.80ms` from Osaka, JP
45.189.83.208	AS269580 PROVEDOR GOIAS NET EIRELI - ME	`11.65ms` from Osasco, BR
34.238.115.128	AS14618 Amazon.com, Inc.	`0.38ms` from Reston, US
141.0.136.208	AS206260 Svorka AS	`10.10ms` from Sandefjord, NO
165.232.146.112	AS14061 DigitalOcean, LLC	`0.26ms` from Santa Clara, US
203.203.54.0	AS9416 Hoshin Multimedia Center Inc.	`3.50ms` from Taipei, TW
77.126.114.128	AS12400 Partner Communications Ltd.	`2.41ms` from Tel Aviv, IL
5.135.230.160	AS16276 OVH SAS	`0.07ms` from Gravelines, FR
27.79.79.80	AS7552 Viettel Group	`12.68ms` from Ho Chi Minh City, VN
35.236.91.128	AS396982 Google LLC	`0.10ms` from Los Angeles, US
47.136.157.240	AS5650 Frontier Communications of America, Inc.	`5.93ms` from Los Angeles, US
95.60.214.16	AS12430 VODAFONE ESPANA S.A.U.	`19.57ms` from Madrid, ES
110.148.192.240	AS1221 Telstra Limited	`4.18ms` from Melbourne, AU
185.112.185.128	AS31543 myNet GmbH	`5.45ms` from Milan, IT

Traceroute

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

traceroute -a -n -q1 -m6 128.231.245.255

traceroute to 128.231.245.255 (128.231.245.255): 6 hops max, 52 byte packets

1 [AS15169] 142.251.52.187 8.892 ms

2 [AS10886] 206.196.177.108 9.814 ms

3 [AS10886] 206.196.177.185 11.441 ms

4 *

5 *

6 *

Measurement taken from

IPinfo ProbeNet in Columbus, US

On October 30th 2025

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