Nih.gov National Institutes of Health (NIH) | Turning Discovery Into Health

Official website of the National Institutes of Health (NIH). NIH is one of the world's foremost medical research centers. An agency of the U.S. Depart...

Nih.gov Quick Summary

Status

Offline

Server IP address resolved: No

Http response code: None

Last Checked: 03/19/2025

Nih.gov traffic estimate is about 2,142,454 unique visitors and 6,962,976 pageviews per day. The approximated value of nih.gov is 91,493,820 USD. Every unique visitor makes about 3.25 pageviews on average.

Alexa Traffic Rank estimates that nih.gov is ranked number 42 in the world, while most of its traffic comes from China, where it occupies as high as 59 place.

nih.gov is hosted by NIH-NET - National Institutes of Health, US in United States and we recommend relocating the server to China, as it will speed up nih.gov page load time for the majority of their users. See the list of other websites hosted by NIH-NET - National Institutes of Health, US.

Nih.gov is registered under .GOV top-level domain. Check other websites in .GOV zone.

During the last check (February 06, 2023) nih.gov has an expired SSL certificate issued by GoDaddy.com, Inc. (expired on February 15, 2023), please click the “Refresh” button for SSL Information at the Safety Information section. Check other websites using SSL certificates issued by GoDaddy.com, Inc..

In accordance with Google Safe Browsing, Google Safe Search, Symantec and Web of Trust nih.gov is pretty a safe domain.

Relying on Google Mobile-Friendly test nih.gov is well optimized for mobile and tablet devices.

Nih.gov General Information

Nih.gov Audience Geography

Where are website visitors coming from?

Visitors
Pageviews
Ranks

Country	Visitors
China CN	34.2%
United States US	21.4%
India IN	6.7%
United Kingdom GB	2.9%
Australia AU	2.3%
Canada CA	1.8%
Germany DE	1.5%
Korea KR	1.1%
Spain ES	1%
Other	27.3%

Country	Rank
Ethiopia ET	14
China CN	59
Australia AU	89
United States US	97
Malaysia MY	98
Canada CA	121
United Kingdom GB	121
Netherlands NL	128
Philippines PH	132
Pakistan PK	136
Spain ES	160
South Africa ZA	167

Nih.gov Traffic Distribution

Where do visitors go on nih.gov?

Subdomain Traffic
Views per User
Subdomain Reach

Subdomain	Pageviews
nlm.nih.gov	94.3%
nih.gov	0.51%
nhlbi.nih.gov	0.47%
era.nih.gov	0.46%
niddk.nih.gov	0.4%
nia.nih.gov	0.31%
nida.nih.gov	0.3%
nimh.nih.gov	0.3%
od.nih.gov	0.26%
other	2.7%

Subdomain	Views per User
irtsectraining.nih.gov	90
era.nih.gov	6.3
nlm.nih.gov	3.07
nibib.nih.gov	2.6
reporter.nih.gov	2.3
grants.nih.gov	2.1
auth.nih.gov	1.9
od.nih.gov	1.8
imagej.nih.gov	1.7
nimh.nih.gov	1.6
other	1.28

Subdomain	Reach
nlm.nih.gov	93.31%
nhlbi.nih.gov	1.08%
nih.gov	1%
niddk.nih.gov	0.94%
nia.nih.gov	0.62%
nimh.nih.gov	0.58%
nida.nih.gov	0.57%
od.nih.gov	0.44%
auth.nih.gov	0.37%
ninds.nih.gov	0.29%
other	2.72%

Nih.gov Popularity

How popular is nih.gov?

Global Rank
Pageviews
Reach

Period	Global Rank	Global Rank Delta
past 3 months	99	-60
past month	94	-4
past week	95	8
yesterday	100	8

Days	Pageviews Rank	Pageviews Rank Delta	Pageviews per Million	Pageviews per Million Delta	Pageviews per User	Pageviews per User Delta
90	134	-117	3299	33%	3.25	13%
30	133	8	341	-10.64%	3.03	-9.821%
7	150	28	320	-13.96%	2.77	-10.93%
1	162	25	315	-12.36%	2.7	-5.536%

Days	Reach Rank	Reach Rank Delta	Reach per Million	Reach per Million Delta
90	99	-49	3630	18%
30	91	-5	3690	-1%
7	93	6	3710	-3.52%
1	95	6	3800	-7.327%

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Nih.gov Safety Information

Rankchart Summary

Safe

Updated: 03/19/2025

We gather website safety and reputation data and compare it with available third-party sources so we calculate own safety and trustworthiness rate based on information that we get.

Norton Connect Safe

Safe

Updated: 03/08/2025

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Norton ConnectSafe evaluates websites for any unsafe and inapropriate content. The results are important for families with young children.

Google Safe Search

Safe

Updated: 10/10/2016

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SafeSearch works as a parental control tool to filter out any content that might be inappropriate for your children.

Google Safe Browsing

Safe

Malware not found

Phishing not detected

Unwanted software not found

Harmfull applications not found

Updated: 03/04/2022

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Google Safe Browsing notifies when websites are compromised by malicious actors. These protections work across Google products and provide a safer online experience.

McAfee® WebAdvisor

Safe

Updated: 02/22/2021

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McAfee assesses nih.gov for a meaningful set of security threats. Featured dangers from annoying pop-ups to hidden Trojans, that can steal your identity, will be revealed. McAfee does not analyze nih.gov for mature or inappropriate content, only security checks are evaluated.

Web of Trust

Child safety is very good

Updated: 01/09/2019

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The WOT calculates reputation of the nih.gov. This reputation system receives ratings from users and information from third-party sources, assesses the nih.gov for safety features and confirms, whether nih.gov is suitable for children.

Nih.gov SSL Information

Information about SSL/TLS certificates

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Domain	www.nih.gov
Issuer Organization	GoDaddy.com, Inc.
Issuer	Go Daddy Secure Certificate Authority - G2
Algorithm	RSA-SHA256
Valid form	02/15/2022
Expiration	02/15/2023
Signed	Certificate is not self signed
Additional Domains	nih.gov testdomain2.nih.gov nih.com clinicalresearchtrials.nih.gov stagetestdomain3.nih.gov www.nih.gov stagetestdomain2.nih.gov testdomain.nih.gov devtestdomain.nih.gov stagetestdomain.nih.gov devtestdomain3.nih.gov nihplainlanguage.nih.gov www.nih.com nihrecord.nih.gov health.nih.gov devtestdomain2.nih.gov salud.nih.gov devtestdomain4.nih.gov newsinhealth.nih.gov www.health.nih.gov stagetestdomain4.nih.gov

SSL Checker

Nih.gov Server Information

Nih.gov Server Location

Where website hosting server is located?

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Nih.gov ASN Information

Information about IP address owner

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ASN ID: 3527

ASN Title: NIH-NET - National Institutes of Health, US

Updated: 10/06/2024

Raw ASN data:

#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/whois_tou.html
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/whois_reporting/index.html
#
# Copyright 1997-2018, American Registry for Internet Numbers, Ltd.
#

ASNumber: 3527
ASName: NIH-NET
ASHandle: AS3527
RegDate: 1994-04-06
Updated: 2003-01-02
Ref: https://rdap.arin.net/registry/autnum/3527

OrgName: National Institutes of Health
OrgId: NIH
Address: 6555 Rock Spring Drive
City: Bethesda
StateProv: MD
PostalCode: 20817
Country: US
RegDate:
Updated: 2016-08-02
Ref: https://rdap.arin.net/registry/entity/NIH

OrgNOCHandle: NOC228-ARIN
OrgNOCName: Network Operations Center
OrgNOCPhone: +1-301-402-3141
OrgNOCEmail: NIH-DOMAIN-ADMIN@list.nih.gov
OrgNOCRef: https://rdap.arin.net/registry/entity/NOC228-ARIN

OrgTechHandle: WCB8-ARIN
OrgTechName: Berry, Wilbert Caldwell
OrgTechPhone: +1-301-529-9312
OrgTechEmail: babylon5@mail.nih.gov
OrgTechRef: https://rdap.arin.net/registry/entity/WCB8-ARIN

OrgTechHandle: NDAND-ARIN
OrgTechName: NIH DNS Administrators, NIH DNS
OrgTechPhone: +1-301-435-1970
OrgTechEmail: hostmaster@list.nih.gov
OrgTechRef: https://rdap.arin.net/registry/entity/NDAND-ARIN

OrgAbuseHandle: NIHIR-ARIN
OrgAbuseName: NIH IRT
OrgAbusePhone: +1-301-881-9726
OrgAbuseEmail: irt@nih.gov
OrgAbuseRef: https://rdap.arin.net/registry/entity/NIHIR-ARIN

OrgTechHandle: WML-ARIN
OrgTechName: Lamar, Walter Morgan
OrgTechPhone: +1-301-435-1965
OrgTechEmail: wl49b@nih.gov
OrgTechRef: https://rdap.arin.net/registry/entity/WML-ARIN

OrgTechHandle: GDB8-ARIN
OrgTechName: Botts, Glenn David
OrgTechPhone: +1-240-743-1522
OrgTechEmail: bottsg@mail.nih.gov
OrgTechRef: https://rdap.arin.net/registry/entity/GDB8-ARIN

OrgTechHandle: SLE191-ARIN
OrgTechName: Emma, Saundra L
OrgTechPhone: +1-301-402-4764
OrgTechEmail: emmas@mail.nih.gov
OrgTechRef: https://rdap.arin.net/registry/entity/SLE191-ARIN

#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/whois_tou.html
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/whois_reporting/index.html
#
# Copyright 1997-2018, American Registry for Internet Numbers, Ltd.
#

Geolocation

ASN Lookup

Nih.gov Domain Name Information

Nih.gov DNS Information

Domain name service records

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A
MX
NS
TXT
SOA

Host	A Record	TTL
nih.gov	156.40.212.210	300

Host	MX Record	Priority	TTL
nih.gov	nihcesxway4.hub.nih.gov	10	7200
nih.gov	nihcesxway3.hub.nih.gov	10	7200
nih.gov	nihcesxwayst06.hub.nih.gov	10	7200
nih.gov	nihcesxwayst05.hub.nih.gov	10	7200
nih.gov	nihcesxwayst04.hub.nih.gov	10	7200
nih.gov	nihcesxwayst03.hub.nih.gov	10	7200
nih.gov	nihcesxway6.hub.nih.gov	10	7200
nih.gov	nihcesxway5.hub.nih.gov	10	7200

Host	NS Record	TTL
nih.gov	ns.nih.gov	7200
nih.gov	ns3.nih.gov	7200
nih.gov	ns2.nih.gov	7200

Host	TXT Record	TTL
nih.gov	amazonses:93j7xtRaIBE5K+ERCErN+WDNFhQPQ1rY8mCD3Ut5Rqg=	300
nih.gov	cisco-ci-domain-verification=25e2351f5ed93561cf171fbead7759b2407183ca513c2c4d7eb88be637a59b7f	300
nih.gov	x1htw52vr2t3416zs29gg8lq0zkw744c	300
nih.gov	atlassian-domain-verification=VhnxT3ISJLKFyasfowo1iyVXcEqztbz/3PWOQM6LP0kG9HrAlq/21h27cbqTwdxw	300
nih.gov	amazonses:Socb9IMK/O81TXqIP15y3NAyd8tyEcV6waygbWSPBi0=	300
nih.gov	v7959lz5pgb250x8gzt0fkg7j4x1s6bw	300
nih.gov	amazonses:EpIukSNkqrJBid632tohg9ghfR9ZOm2BsQKY8fKESvs=	300
nih.gov	amazonses:Oq2yjJ17I+Cqlgpxl9Pto0uQ7gwb0IpbhQFCHjPwuGo=	300
nih.gov	amazonses:njYRGZSzGLGsQ66bZMwxwZZF4zHx9G8JWosbZeNa7Eo=	300
nih.gov	apple-domain-verification=2IrLd0KYEerfwrx6	300
nih.gov	apple-domain-verification=rFyOPvcO8sUX2iHP	300
nih.gov	amazonses:sFnUJ7LhEsJBsbZON/tFEgtZeGaqZiwY6vCL/+AJXak=	300
nih.gov	amazonses:rhL1YpdU4RL+Q7IALiZNww69f5cR1IZDcqEh9fRy6Tg=	300
nih.gov	amazonses:QJZljHq4QVLochyWJlHRtF/TQ7CgNwoHHWnOK7AjCWo=	300
nih.gov	apple-domain-verification=G25suhrGTYqwbLNS	300
nih.gov	apple-domain-verification=FTZHYv0nuXKqjeP8	300
nih.gov	amazonses:QLi7vDgXZTFrD/2qNMkfcQtCzsetuefpN50b98lKPA0=	300
nih.gov	apple-domain-verification=c8bb3gA2SNfmH0Zx	300
nih.gov	apple-domain-verification=8VumNb91MILOLiQZ	300
nih.gov	miro-verification=ce1878a9901e3785a9ee9302aaaf4b8f878ff042	300
nih.gov	docker-verification=6c54ab12-d26d-44b7-978e-f60aa83a02f3	300
nih.gov	v=spf1 ip4:128.231.90.64/26 ip4:165.112.13.0/26 ip4:156.40.79.128/25 ip4:165.112.194.0/25 ip6:2607:f220:0404:8104::0/64 ip6:2607:f220:402:1a01::0/64 include:spf.protection.outlook.com ~all	300
nih.gov	webexdomainverification.4C675B8AF44FB136E053AB06FC0A3F65=b1985124-e9bf-4009-a584-7dee024dc7e9	300
nih.gov	webexdomainverification.4C675B8AEB46B136E053AB06FC0A3F65=a9568d05-1a3d-4c2b-9f45-3b5d786db694	300
nih.gov	webexdomainverification.4C675B8A8FC5B136E053AB06FC0A3F65=81f2d6dc-b5b1-4624-9e3f-278cb4163770	300
nih.gov	webexdomainverification.4C675B897222B136E053AB06FC0A3F65=cf14e0ca-cfec-4d2b-83ab-5971ee749040	300
nih.gov	adobe-idp-site-verification=5e85ea0ed34d3d2a09f830d0cfc77139471d15e20e771d90484e89895b0a9f1e	300
nih.gov	ciscocidomainverification=1b32b084b0eb3ade21d6a521cfa1db73d2a787817950f96cf35fe67d6fa84685	300
nih.gov	SDRQ4Pu3aj2Qhnqm0Pu+NCsKPrfBbW56qXduqE9GxA/f5eo+/Ui6umgbTg9PW0hjeg21Q2yCpOALWHqZ91OwZQ==	300
nih.gov	google-site-verification=zVNJw3i2goXwxAOFiO6ubfIWhKkgRnHS82Q7F6M6Gck	300
nih.gov	google-site-verification=8BC5Gnatu9NBfOph_lZpZyG2eDK0iPs0V8Li0RKzin8	300
nih.gov	webexdomainverification.2494X=72426cc0-664d-4a80-a6f4-113b7f648c9d	300
nih.gov	amazonses:vDxikFPIS0Am8dY/BlMuOFbJ2TuF64fRwUfkUGH67bY=	300
nih.gov	amazonses:F99Cv1zG5C8JOyxlwPmjFx3qCOyQ7xJdwsNMHiJbEew=	300
nih.gov	amazonses:Ckm+FeqyUMSBHOvsBsDHWeb1nuGAr6AWg5crTuJh47k=	300
nih.gov	amazonses:6dUQp3PJw2/pPriaGheRkNX6rVRchTDJCVkzGLDtftA=	300
nih.gov	docusign=850d3223-bb46-4946-986b-2410b69ed0e7	300
nih.gov	docusign=5a06ea48-7158-4d7c-a47f-624b9d0cebc9	300
nih.gov	rh426i3oiis217bktj8o4nd2m2	300
nih.gov	atlassian-domain-verification=FfyaIO5BcqxasUU4Cuwp9/4Y3ujXrMEpfhyaPydm5lM6vqDALuZFv8QqJI6qUPVp	300

Nih.gov Whois Information

Information about registered users or assignees of an Internet resource

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Raw WHOIS data:

Whois

DNS Lookup

Nih.gov HTML Validation

Nih.gov W3C HTML Markup Validation

HTML markup errors and warnings

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Errors:

X-UA-Compatible HTTP header must have the value “IE=edge”, was “IE=edge,chrome=IE6”.

A “charset” attribute on a “meta” element found after the first 1024 bytes.

Bad value “cleartype” for attribute “http-equiv” on element “meta”.

Using the “meta” element to specify the document-wide default language is obsolete. Consider specifying the language on the root element instead.

Bad value “//fonts.googleapis.com/css?family=Droid+Sans:700,regular|Droid+Serif:italic,regular&subset=latin” for attribute “href” on element “link”: Illegal character in query: “|” is not allowed.

Duplicate ID “affiliate”.

Duplicate attribute “id”.

Duplicate attribute “class”.

Duplicate attribute “xml:lang”.

Warnings:

The “language” attribute on the “script” element is obsolete. You can safely omit it.

The “type” attribute is unnecessary for JavaScript resources.

The “banner” role is unnecessary for element “header”.

The first occurrence of ID “affiliate” was here.

The “contentinfo” role is unnecessary for element “footer”.

HTML Validator

Nih.gov Desktop Performance

How Well Nih.gov Performs On Desktops?

Website desktop performance and usability tips

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Speed
Resource Breakdown

Speed

85%

Avoid landing page redirects

Leverage browser caching

Eliminate render-blocking JavaScript and CSS in above-the-fold content

Minify JavaScript

Optimize images

Minify CSS

Enable compression

Updated: 10/07/2018

Nih.gov Mobile Performance

How Optimized Is Nih.gov for Mobile Devices?

Tips on speeding up mobile site performance

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Usability
Speed
Resource Breakdown

Usability

99%

Size tap targets appropriately

Updated: 10/07/2018

Nih.gov Nearest Competitors

Estimated Nearest Competitors Of Nih.gov

wa.me
itunes.apple.com
policies.google.com
gravatar.com
t.me
github.io
yahoo.com
tumblr.com
macromedia.com
r****t.com
nih.gov
forms.gle
maps.app.goo.gl
spotify.com
q*.com
httpd.apache.org
amazonaws.com
support.apple.com
miit.gov.cn
flickr.com
beian.miit.gov.cn
m****m.com

Nih.gov URL Typos

Most common user URL mistypes for nih.gov

www.nih.com
www.nih.net
www.nih.org
www.nih.info
www.nih.biz
www.nih.us
www.nih.mobi
www.ih.gov
www.nih.gov
www.bih.gov
www.nbih.gov
www.bnih.gov
www.hih.gov
www.nhih.gov
www.hnih.gov
www.jih.gov
www.njih.gov
www.jnih.gov
www.mih.gov
www.nmih.gov
www.mnih.gov
www.nh.gov
www.nuh.gov
www.niuh.gov
www.nuih.gov
www.njh.gov
www.nijh.gov
www.nkh.gov
www.nikh.gov
www.nkih.gov
www.noh.gov
www.nioh.gov
www.noih.gov
www.ni.gov
www.nib.gov
www.nihb.gov
www.nibh.gov
www.nig.gov
www.nihg.gov
www.nigh.gov
www.niy.gov
www.nihy.gov
www.niyh.gov
www.niu.gov
www.nihu.gov
www.nij.gov
www.nihj.gov
www.nin.gov
www.nihn.gov
www.ninh.gov

CSS	254.2 KBytes
Images	336.0 KBytes
HTML	64.7 KBytes
JavaScript	899.3 KBytes
Other	53.4 KBytes

CSS	243.8 KBytes
Images	203.5 KBytes
HTML	64.7 KBytes
JavaScript	896.4 KBytes
Other	34.1 KBytes

Total Resources	60
Number of Hosts	14
Static Resources	47
JavaScript Resources	20
CSS Resources	11