si.edu Domain Owner Whois and Analysis

DOMAIN OWNER WHOIS

ⓘ The owner's whois contact information is public.

• Organization

Smithsonian Institution

• Address

380 Herndon Parkway

• City

Herndon

• Zip Code

20170

• State

• Country

USA

SEO SCORE

si.edu
Make your link ↑ do-follow

100

Well done!
All criteria passed

OVERVIEW

• Domain Owner

Smithsonian Institution See more

• Category

Education

• Online since

June 19, 1992 Explore Wayback Machine

• Age

32 years, 4 months, 16 days

• Alexa Rank

#6.987, si.edu is in the world's top 10.000 websites!

SUPERCHARGE YOUR SEO

Boost si.edu's SEO with Kontactr's Guest Posting.

Secure high-authority, do-follow backlinks from our trusted site—DA45 domain authority and PA55 homepage and blog pages.

Perfect for webmasters seeking higher search rankings and increased organic traffic.

Simple, quick, and effective.

opens a new window

TECHNICAL SEO & SECURITY

❌ SSL Certificate

This website is not SSL secured (HTTPS), the certificate issued by Entrust, Inc. has expired on February 15, 2021.

✅ Title Tag

Smithsonian Homepage | Smithsonian Institution
Length: 46 (recommended: 10 to 70)

✅ Meta Description

Official website of the Smithsonian, the world's largest museum and research complex, with 19 museums, 9 research centers, and affiliates around the world.
Length: 155 (recommended: 50 to 160)

ⓘ Google preview

Desktop Version

Smithsonian Homepage | Smithsonian Institution

https://si.edu

Official website of the Smithsonian, the world's largest museum and research complex, with 19 museums, 9 research centers, and affiliates around the world.

Mobile Version

https://si.edu

Smithsonian Homepage | Smithsonian Institution

Official website of the Smithsonian, the world's largest museum and research complex, with 19 museums, 9 research centers, and aff...

✅ Encoding

Great, language/character encoding is specified: utf-8

✅ URL Resolve

Great, a redirect is in place to redirect traffic from your non-preferred domain. All versions of your page point to the same URL.

URL	Resolved URL
http://si.edu	https://www.si.edu/
https://si.edu	https://www.si.edu/
http://www.si.edu	https://www.si.edu/
https://www.si.edu	https://www.si.edu/

✅ Robots.txt

https://www.si.edu/robots.txt

✅ URL Parameters

Great, the domain URLs look clean.

Attribute	Value
ⓘ viewport	width=device-width

SEMANTIC ANALYSIS

ⓘ The owner has associated the following topics to the website.

ⓘ The results of our semantic analysis are shown below using the website's language.

They are the main concepts covered by si.edu.

Each concept has a confidence score. The higher it is, the more important the topic is relative to the page.

Topics

Smithsonian Institution Confidence: 83%

The Smithsonian Institution, established in 1846 "for the increase and diffusion of knowledge," is a group of museums and research centers administered by the Government of the United States. Originally organized as the "United States National Museum," that name ceased to exist as an administrative entity in 1967.

Museum Confidence: 63%

A museum (; plural musea or museums) is an institution that cares for (conserves) a collection of artifacts and other objects of artistic, cultural, historical, or scientific importance and some public museums make them available for public viewing through exhibits that may be permanent or temporary. Most large museums are located in major cities throughout the world and more local ones exist in smaller cities, towns and even the countryside. Museums have varying aims, ranging from serving researchers and specialists to serving the general public. The goal of serving researchers is increasingly shifting to serving the general public.

WEBSITE SPEED

✅ si.edu website speed is normal. Page speed is important for visitors and search engines.

Get insights to improve your page loading time.

Page Loading Time

1.4s

This domain loads at the median speed of 1.4 seconds.

Speed Percentile

61%

si.edu is faster than approximately 61 percent of the web. Your website page speed needs to be as fast as you can make it, without compromising the customer experience.

A good goal to achieve is a loading time of 2 seconds on desktop and mobile devices.

PAGESPEED INSIGHTS

Page on which speed is tested live:

Chrome User Experience Report Results

Lighthouse Results

TRAFFIC

ⓘ This website is ranked #6.987 by Alexa.

This rank is traffic based. The lower the rank is, the better the domain is ranked.

Daily visitors by country

India (3.7%)
United States of America (65.5%)
United Kingdom of Great Britain and Northern Ireland (3.9%)
Canada (3.9%)
Canada (18.3%)
Others (6.2%)

Traffic country ranks

Country	Rank
India	#16.209
United States of America	#1.591
Australia	#8.403
Chile	#5.465
United Kingdom of Great Britain and Northern Ireland	#3.694
Brazil	#24.383
Mexico	#20.052
Canada	#3.758
Canada	#0

LAYOUT

ⓘ Doctype HTML5

ⓘ Responsive website, mobile-friendly.

Mobile Rendering

This website seems to be optimized for Mobile Visitors.

Phone
How si.edu looks like on a mobile device such as an iPhone.

Tablet
How si.edu looks like on a tablet such as an iPad.

Main colors used

ⓘ These are the main HTML color codes used by this website.

28% #ffffff
16% #f0f0f0
12% #304040
9% #2090c0
6% #101020
5% #e0e0e0
5% #e0f0f0
3% #30b0d0
2% #30a0c0
2% #205060
1% #3080a0
1% #f0ffff

Text/code ratio

ⓘ si.edu's text/code ratio is 7.87%. It's a bit low. Consider raising it by adding more text content of value for your visitors, or keeping your code clean.

Text / Code Ratio 7.87%

A good text to HTML ratio is anywhere from 25 to 70%.

This percentage refers to the visible text ratio, as opposed to HTML elements, image tags and other non-visible information.

Main HTML tags

✅ Headings

Great, we found headings on this page.

<H1> 1
<H2> 10
<H3> 16
<H4> 0
<H5> 0
<H6> 0

<H1>

Top level heading
Smithsonian ınstitution

<H2>

2^nd level heading
Smithsonian global: 7 continents. 140 + countries (2)
Ep. 12 \| apollo 12's really close call (2)
Bye bye, bei bei: farewell celebration
Smithsonian year of music
The outwin 2019: american portraiture today
Return to when dinosaurs ruled
Welcome
Visit

<H3>

3^rd level heading
Don't forget your jacket
Autumn views
Wonder women
1969: a year in the collections
Thanksgiving
Americans
Ocean portal: all about sharks
Votes for women
Emammal: see wildlife, do science
Excelsior! super superheroes
Hip-hop and rap
Jazzed about art
Magazine
Channel
Shop
Travel

✅ Alt attributes

We found 26 images on this website.
Great, 0 ALT attributes are missing on your image tags.

LINKS

ⓘ There is a total of 200 links on the homepage of this website.

ⓘ Internal links : 162

For a better readability, only the first 50 internal links are shown below.

Anchor	Type	URL
	image	/
Visit	text	/visit
Museums and Zoo	text	/museums
Hours	text	/hours
Tips & Guidelines	text	/visit/tips
Accessibility	text	/visit/visitorswithdisabilities
Group Visits	text	/visit/visitınfogroups
Field Trips	text	/visit/field-trip
Group Sales	text	/groupsales
Air and Space Museum	text	/groupsales/airandspacemuseum
Air and Space Museum Udvar-Hazy Center	text	/groupsales/airandspacemuseumhazy
American Art Museum and Portrait Gallery	text	/groupsales/americanartportraitgallery
American History Museum	text	/groupsales/americanhistorymuseum
American Indian Museum	text	/groupsales/americanındianmuseum
Natural History Museum	text	/groupsales/naturalhistorymuseum
Smithsonian Institution Building, the Castle	text	/groupsales/smithsoniancastle
Educator Resources	text	/groupsales/educators
IMAX On Demand Library	text	/groupsales/ımaxondemand
Dining	text	/dining
Museum Stores	text	/visit/museum-stores
Visiting with Kids	text	/visit/kids
What's On	text	/whats-on
Exhibitions	text	/exhibitions
Current Exhibitions	text	/exhibitions
Upcoming	text	/exhibitions/upcoming
Past Exhibitions	text	/exhibitions/past
Online Exhibitions	text	/exhibitions/online
All Events	text	/events
Today's Events	text	/events/today
IMAX Films & Planetarium	text	/imax
Learn & Explore	text	/learn-explore
For Educators	text	/educators
Resources	text	/educators/resources
Events	text	/educators/events
Professional Development	text	/educators/professional-development
For Kids	text	/kids
For Researchers	text	/researchers
Libraries	text	/researchcenters/si-libraries
Archives	text	/siasc
Smithsonian Institution Archives	text	/siasc/si_archives
Air and Space Museum	text	/siasc/nasm_archives
Anacostia Community Museum	text	/siasc/acma
American Art Museum	text	/siasc/saam
Archives of American Art	text	/siasc/aaa
Archives of American Gardens	text	/siasc/american_gardens
American History Museum	text	/siasc/archives_center
American Indian Museum	text	/siasc/nmai
Eliot Elisofon Photographic Archives, African Art	text	/siasc/eepa_nmafa
Freer\|Sackler Archives	text	/siasc/freer_sackler
Hirshhorn Archive	text	/siasc/hmsg_archive

ⓘ External links : 38

Anchor	Type	URL
Donate	text	https://support.si.edu/site/donation2?df_id=15824&15824.donation=form1&s_src=z0000pwswf&...
Global Partners	text	https://global.si.edu
Affiliations	text	https://affiliations.si.edu/
African American Museum	text	https://nmaahc.si.edu/connect/national-museum-african-american-history-and-culture-office-special-ev...
African Art Museum	text	http://africa.si.edu/events/entertaining-at-the-museum/
Air and Space Museum	text	http://airandspace.si.edu/support/host-an-event/dc.cfm
Air and Space Museum Udvar-Hazy Center	text	http://airandspace.si.edu/support/host-an-event/hazy.cfm
American Art Museum	text	http://americanart.si.edu/reynolds_center/
American History Museum	text	http://americanhistory.si.edu/museum/special-events
American Indian Museum	text	http://nmai.si.edu/support/specialevents/washington/
Anacostia Community Museum	text	http://anacostia.si.edu/support/specialevents
Freer and Sackler Galleries	text	https://www.freersackler.si.edu/celebrations/
National Zoo	text	https://nationalzoo.si.edu/support/host-event-zoo
Natural History Museum	text	https://naturalhistory.si.edu/join-us/host-event-museum
Portrait Gallery	text	https://npg.si.edu/about-us/host-event
Postal Museum	text	http://postalmuseum.si.edu/about/co-host-an-event.html
Renwick Gallery	text	https://americanart.si.edu/about/event-spaces/renwick?utm_source=host%20an%20event%20page&utm_me...
American Indian Museum New York	text	http://nmai.si.edu/support/specialevents/newyork/
Cooper Hewitt, Smithsonian Design Museum	text	http://www.cooperhewitt.org/entertain/
	image	https://global.si.edu/
	image	https://nationalzoo.si.edu/events/bye-bye-bei-bei
	image	https://music.si.edu
	image	https://portraitcompetition.si.edu
	image	https://naturalhistory.si.edu/exhibits/david-h-koch-hall-fossils-deep-time
	image	https://nmai.si.edu/americans/
	image	https://ocean.si.edu/ocean-life/sharks-rays/sharks
	image	https://emammal.si.edu/
	image	https://www.smithsonianmag.com
	image	http://www.smithsonianchannel.com/
	image	https://www.smithsonianjourneys.org/catalog/?src=si.edu&utm_source=si.edu&utm_medium=banner&...
Facebook	text	https://www.facebook.com/smithsonian
Instagram	text	https://instagram.com/smithsonian
Pinterest	text	https://www.pinterest.com/smithsonian/
Tumblr	text	https://smithsonian.tumblr.com/
Twitter	text	https://twitter.com/smithsonian
YouTube	text	https://www.youtube.com/c/smithsonian
Privacy Policy	text	https://www.blackbaud.com/privacy-policy.aspx
Terms of Use	text	https://www.blackbaud.com/terms-of-use.aspx

DOMAIN REGISTRAR

ⓘ Registration Date	06/19/1992 32 years, 4 months, 16 days ago
ⓘ Last Modified	04/18/2019 5 years, 6 months, 19 days ago
ⓘ Expiration Date	07/31/2021 Expired