Nrao.edu National Radio Astronomy Observatory – Revealing the Hidden Universe

Nrao.edu Overview

National Radio Astronomy Observatory (NRAO) is a website that provides information on radio astronomy, astrophysics, and technology of radio telescopes. The website's name clearly articulates its purpose, which is to facilitate research and advancement in the field of radio astronomy. The website has a very clean design, and it is easy to navigate. For instance, on the home page, users are able to find a menu bar that has links to all the essential parts of the website, making it easy for them to find information that they need.

The site is hosted by VIRGINIA-AS, a part of the University of Virginia, which is one of the leading research universities in the US. This ensures the site is hosted on a reliable and secure server, which is critical given the nature of the information on the website. Furthermore, the site uses an SSL certificate from Sectigo Limited, which provides an additional level of security for the users.

The site seems to be family-friendly since it is dedicated to solving scientific mysteries without sharing any content that could be harmful to children. There is no objectionable content, and the language used is primarily technical and scientific. The website's intended audience is scientists, students, and those interested in pursuing a career in radio astronomy and astrophysics.

Regarding the website's overall performance, the PageSpeed Insights score is not satisfactory, as it has scored 34 in speed. This means the website could load faster, and optimizations can be made to improve its speed. However, this low score should not be an issue for most users, given that the website contains mostly text and images.

In conclusion, the NRAO website provides a wealth of information on radio astronomy and its technology. It is well-organized, easy to navigate, and appears to be family-friendly. The reliable hosting and additional SSL security give users peace of mind regarding their data while using the site. The unsatisfactory PageSpeed Insights scores can be improved with the necessary optimization techniques to increase the site's speed. Overall, the NRAO website is an excellent resource for anyone interested in radio astronomy and astrophysics information.

Nrao.edu Rank Summary

Global Rank

215,257

Average Load Time

1.75sec

Links In Count

2,099

Website Value

$59,130

Audience Geography. Where are nrao.edu visitors located?

Country	Visitors
United States US	19%
Other	81%

Country	Pageviews
United States US	23.9%
Other	76.1%

Country	Rank
United States US	73371

Where do visitors go on nrao.edu?

Subdomain	Pageviews
public.nrao.edu	3.95%
aips.nrao.edu	3.7%
data.nrao.edu	2.76%
archive.nrao.edu	2.35%
my.nrao.edu	1.42%
other	85.85%

Subdomain	Pageviews per User
archive.nrao.edu	3
data.nrao.edu	3
aips.nrao.edu	3
my.nrao.edu	1
public.nrao.edu	1

Subdomain	Reach
public.nrao.edu	13.13%
my.nrao.edu	4.72%
aips.nrao.edu	4.1%
data.nrao.edu	3.66%
archive.nrao.edu	2.96%

How popular is nrao.edu?

Period	Global Rank	Global Rank Delta
past 3 months	215257	-154164
past month	121394	-141454
past week	253847	162408
yesterday	232073	7213

Days	Pageviews Rank	Pageviews Rank Delta	Pageviews per Million	Pageviews per Million Delta	Pageviews per User	Pageviews per User Delta
90	244094	-280474	19	200%	2.6	80%
30	124867	-237478	45	260%	3	90%
7	242432	167978	2	-76.338%	3.3	-33.87%
1	157923	-17246	36	7%	5	20%

Days	Reach Rank	Reach Rank Delta	Reach per Million	Reach per Million Delta
90	218952	-105042	32	70%
30	131645	-108683	55	90%
7	296103	184491	24	-64.235%
1	308871	17003	2	-14.21%

Nrao.edu Website Safety

Overview

Last Updated: 09/20/2024

Overall result - nrao.edu is safe.

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

Last Updated: 03/24/2024

nrao.edu is safe.

Norton ConnectSafe evaluates nrao.edu for any unsafe and insecure content. The results are critical for families with young children.

Google Safe Search

Last Updated: 10/28/2016

nrao.edu is safe.

SafeSearch is used as a parental control tool to filter out any inappropriate for your children search results on your devices: phones, tablets or personal computers.

Google Safe Browsing

Last Updated: 01/09/2019

nrao.edu is safe.
Malware: not found.
Phishing: not detected.
Unwanted software: not found.
Harmfull applications: not found.

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

Site Advisor

Last Updated: 02/24/2021

nrao.edu is safe.

McAfee assesses nrao.edu 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 nrao.edu for mature or inappropriate content, only security checks are evaluated.

Web of Trust

Last Updated: 01/10/2019

nrao.edu child safety is very good.

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

SSL Information

SSL Checker Tool

Domain	*.nrao.edu
Issuer Organization	Sectigo Limited
Issuer	Sectigo RSA Domain Validation Secure Server CA
Algorithm	RSA-SHA256
Valid form	03/05/2019
Expiration	05/25/2021
Signed	Certificate is not self signed
Additional Domains	*.nrao.edu nrao.edu

Nrao.edu Rank History

Alexa Rank shows how popular nrao.edu is in comparison with other sites. The most popular site has Alexa Rank equals 1. If nrao.edu has Alexa Rank equals 100,000, then it is in TOP 100,000 popular sites in the world. The rank is calculated using a combination of average daily visitors to nrao.edu and pageviews on nrao.edu over the past 3 months.

Nrao.edu Hosting Information

Server Location

Geolocation Tool

ASN Information

ASN Lookup Tool

ASN ID: 225

ASN Title: VIRGINIA-AS - University of Virginia, US

Last Update: 07/20/2024

#
# 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: 225
ASName: VIRGINIA-AS
ASHandle: AS225
RegDate: 1988-08-30
Updated: 2013-04-22
Ref: https://rdap.arin.net/registry/autnum/225

OrgName: University of Virginia
OrgId: UVA
Address: University of Virginia, ITC
Address: P.O. Box 400324
City: Charlottesville
StateProv: VA
PostalCode: 22904-4324
Country: US
RegDate: 1987-12-14
Updated: 2015-03-16
Ref: https://rdap.arin.net/registry/entity/UVA

OrgTechHandle: ITS31-ARIN
OrgTechName: ITS
OrgTechPhone: +1-434-924-0632
OrgTechEmail: networks@virginia.edu
OrgTechRef: https://rdap.arin.net/registry/entity/ITS31-ARIN

OrgNOCHandle: ITS31-ARIN
OrgNOCName: ITS
OrgNOCPhone: +1-434-924-0632
OrgNOCEmail: networks@virginia.edu
OrgNOCRef: https://rdap.arin.net/registry/entity/ITS31-ARIN

OrgAbuseHandle: ABUSE124-ARIN
OrgAbuseName: Abuse Team
OrgAbusePhone: +1-434-243-8707
OrgAbuseEmail: abuse@virginia.edu
OrgAbuseRef: https://rdap.arin.net/registry/entity/ABUSE124-ARIN

RAbuseHandle: ITS31-ARIN
RAbuseName: ITS
RAbusePhone: +1-434-924-0632
RAbuseEmail: networks@virginia.edu
RAbuseRef: https://rdap.arin.net/registry/entity/ITS31-ARIN

RNOCHandle: ITS31-ARIN
RNOCName: ITS
RNOCPhone: +1-434-924-0632
RNOCEmail: networks@virginia.edu
RNOCRef: https://rdap.arin.net/registry/entity/ITS31-ARIN

RTechHandle: ITS31-ARIN
RTechName: ITS
RTechPhone: +1-434-924-0632
RTechEmail: networks@virginia.edu
RTechRef: https://rdap.arin.net/registry/entity/ITS31-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.
#

Nrao.edu Domain Registration and Settings

WHOIS

WHOIS Lookup Tool

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By submitting a Whois query, you agree that this information
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except as reasonably necessary to register or modify .edu
domain names.

-------------------------------------------------------------

Domain Name: NRAO.EDU

Registrant:
National Radio Astronomy Observatory
520 Edgemont Road
Charlottesville, VA 22903-2475
USA

Administrative Contact:
David Halstead
National Radio Astronomy Observatory
520 Edgemont Road
Charlottesville, VA 22903-2475
USA
+1.4342960211
admin@nrao.edu

Technical Contact:
Tech Admin
National Radio Astronomy Observatory
520 Edgemont Road
Charlottesville, VA 22903-2475
USA
+1.4342960211
tech@nrao.edu

Name Servers:
CV3.CV.NRAO.EDU
ZIA.AOC.NRAO.EDU
SADIRA.GB.NRAO.EDU

Domain record activated: 17-Dec-1987
Domain record last updated: 25-Mar-2021
Domain expires: 31-Jul-2021

DNS Records

DNS Lookup Tool

Host	A Record	TTL
nrao.edu	192.33.115.11	86400

Host	MX Record	Priority	TTL
nrao.edu	io.gb.nrao.edu	10	86400
nrao.edu	cv3.cv.nrao.edu	10	86400
nrao.edu	revere.aoc.nrao.edu	10	86400

Host	NS Record	TTL
nrao.edu	zia.aoc.nrao.edu	86400
nrao.edu	cv3.cv.nrao.edu	86400
nrao.edu	sadira.gb.nrao.edu	86400

Host	TXT Record	TTL
nrao.edu	v=spf1 mx include:hgncloud.com ~all	3600
nrao.edu	ugIPtt8T4Uy8aftOSmTufO3LJGLJci5M8dHoq6XgewpbFttQLlDOMzlFZXLLeO0RGjXuUGWh8Arwg8RhOurJVw==	3600

cv3.cv.nrao.edu
TTL: 86400
Email address: tech.nrao.edu
Serial: 2019081600
Refresh: 28800
Retry: 14400
Expire: 3600000
Minimum: 14400

Nrao.edu HTML Check

HTML Validation Tool

Errors

Bad value “https://www.w3.org/1999/xhtml” for the attribute “xmlns” (only “http://www.w3.org/1999/xhtml” permitted here).

Attribute “xmlns:og” not allowed here.

Attribute “xmlns:fb” not allowed here.

Bad value “https://api.w.org/” for attribute “rel” on element “link”: The string “https://api.w.org/” is not a registered keyword.

Bad value “https://theeventscalendar.com/” for attribute “rel” on element “link”: The string “https://theeventscalendar.com/” is not a registered keyword.

Duplicate ID “home-news-link”.

Element “style” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)

An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.

Saw “<!--” within a comment. Probable cause: Nested comment (not allowed).

Warnings

Attribute “xmlns” is not serializable as XML 1.0.

Attribute with the local name “xmlns:og” is not serializable as XML 1.0.

Attribute with the local name “xmlns:fb” is not serializable as XML 1.0.

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

The “navigation” role is unnecessary for element “nav”.

The “main” role is unnecessary for element “main”.

The first occurrence of ID “home-news-link” was here.

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

The document is not mappable to XML 1.0 due to two consecutive hyphens in a comment.

Nrao.edu Desktop Performance

Last tested: 05/31/2017

Desktop Speed

47%

Enable compression

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

Optimize images

Leverage browser caching

Avoid landing page redirects

Minify JavaScript

Minify CSS

Reduce server response time

Minify HTML

Desktop Resource Breakdown

Total Resources	131
Number of Hosts	35
Static Resources	63
JavaScript Resources	34
CSS Resources	11

Nrao.edu Mobile Insights

Last tested: 05/30/2017

Mobile Usability

96%

Size tap targets appropriately

Mobile Speed

34%

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

Enable compression

Avoid landing page redirects

Leverage browser caching

Minify JavaScript

Optimize images

Reduce server response time

Minify CSS

Minify HTML

Mobile Resource Breakdown

Total Resources	121
Number of Hosts	35
Static Resources	62
JavaScript Resources	26
CSS Resources	10

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Nrao.edu National Radio Astronomy Observatory – Revealing the Hidden Universe

Nrao.edu Overview

Nrao.edu Rank Summary

Nrao.edu Website Safety

Nrao.edu Rank History

Nrao.edu Hosting Information

Nrao.edu Domain Registration and Settings

Nrao.edu HTML Check

Nrao.edu Desktop Performance

Nrao.edu Mobile Insights

Nrao.edu Similar Audits

Nrao.edu Common Typos