StackOptic
Back to Search
naic.edu favicon

naic.edu

https://naic.edu· First analyzed 02 May 2026· Updated 02 May 2026
Export
naic.edu
Desktop screenshot of naic.edu
Mobile screenshot of naic.edu
Mobile

Sponsored

Hosting Provider

National Radio Astronomy Observatory

IP Address

192.33.115.42

Site Location

🇺🇸 United Statesvia ip

Server Location

🇺🇸 Charlottesville, United States

ASN

AS225

Organization

National Radio Astronomy Observatory

Server

Apache

Nameservers

zia.aoc.nrao.edu.sadira.gb.nrao.edu.cv3.cv.nrao.edu.

Performance

100

Core Web Vitals

Weight

First Contentful Paint
504 ms10%
Speed Index
655 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
159 KB
3 requests
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Infrastructure
Hosting
National Radio Astronomy Observatory

Technology Stack

1 Technologies Detected

Web Servers

1
Apachev2.4.37

SEO Analysis

F31/100
8
9
3
Meta Tags7/15
Content5/12
Headings0/8
Technical4/21
E-E-A-T0/7
Images0/7
Links3/5
URL5/5
Social0/5
Freshness0/4
Mobile4/4
Indexability3/3
N
naic.edunaic.edu

NRAO - Arecibo Observatory Landing Page

No description available for this page.

Title Length39 chars

Recommended: 50-60 chars (~243px / 580px)

Description Length0 chars

Recommended: 120-160 chars

Issues (3)

  • • Missing meta description — important for click-through rates in SERPs
  • • Missing H1 tag — every page should have exactly one H1
  • • Missing viewport meta tag — page may not be mobile-friendly (Google uses mobile-first indexing)

12 issues found

Upgrade to view details

Local SEO

Local Search Readiness

0/100
Poor
15 2

This site doesn't appear to be a local business. Local SEO signals are optional for non-local websites.

Sponsored

AI & LLM Readiness

F27/100
Bot Access
20/25
Machine Read.
4/25
Schema Data
0/25
Citation
3/25

AI Bot Access

14/14 accessible
AI Search
OAI-SearchBot
PerplexityBot
Claude-SearchBot
Gemini-Deep-Research
DuckAssistBot
Training
GPTBot
ClaudeBot
Google-Extended
Meta-ExternalAgent
Bytespiderinfo
Amazonbot
Applebot-Extended
CCBotinfo
Fetch
ChatGPT-User

Machine Readability

llms.txt
llms-full.txt
Semantic HTML
Heading Hierarchy
Text ratio:75%
Words:161
Token eff.:Too Short

Structured Data

No Schema

Citation Readiness

Opening Summary37w
Descriptive Headings
Canonical URL
Open Graph0/3
Twitter Card0/3
Language Tag
Publish Date
Author Info
Lists
Tables
TL;DR / Summary
About Page Link
Recommendations (11)
AI readiness recommendation preview...
Upgrade to view recommendations

Sponsored

Accessibility

WCAG 2.1 Compliance

Evaluates how accessible your website is for users with disabilities, based on WCAG 2.1 guidelines. Checks images, forms, keyboard navigation, ARIA roles, and color contrast.
C
63/100
7
Passed
5
Critical
0
Warnings
Images & Alt Text
20/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
3/20
Evaluates proper use of HTML5 semantic elements (header, nav, main, footer) and heading hierarchy.
Forms & Inputs
15/15
Verifies form fields have labels, error messages are clear, and inputs are properly associated.
Color & Contrast
15/15
Tests text-to-background color contrast ratios against WCAG AA/AAA minimum requirements.
Keyboard & Focus
9/15
Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).
ARIA & Roles
1/15
Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
3 recommendations
  • •Accessibility recommendation preview...
Upgrade to view recommendations

Carbon Footprint

SWDM v4 · Eco-Score

Carbon emissions estimated using the Sustainable Web Design Model v4 (SWDM v4). Factors in data center, network, and device energy across new and returning visitors. Grade thresholds based on HTTP Archive percentiles.
50/100
A+
20 mg
CO₂e / view
159.1 KB
Page Weight
95%
Cleaner Than
New Visitor
23 mg
vs
Returning (cached)
11 mg
Annual (10K/mo)
2.4 kg
Emission Segments
Data Center
4 mg
Network
5 mg
Device
11 mg
Resource Breakdown
CSS
157.4 KB
HTML
1.7 KB
Green Hosting Not Verified
National Radio Astronomy Observatory
5 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
F

Security Score

0%Critical

No SSL

No WAF

N/A

Upgrade to view header details

HTTP Headers

Developer Console

accept-ranges
bytes
connection
Keep-Alive
content-length
1446
content-type
text/html; charset=UTF-8
date
Sat, 02 May 2026 09:27:04 GMT
keep-alive
timeout=5, max=100
Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

45

SPF
DKIM
DMARC

MX Records (1)

cv3.cv.nrao.edu

Domain Information

naic.edu

DNSSEC
Not Enabled

Mobile Compatibility

Viewport & Responsive Test

Tests how well your website works on mobile devices. Checks viewport configuration, responsive layout, touch targets, font readability, and simulates rendering across different screen sizes.
F
32/100
Not Mobile Friendly
Viewport Meta
The viewport meta tag tells mobile browsers how to scale the page. Without it, mobile devices render at desktop width.
Responsive Design
Uses CSS media queries or flexible layouts to adapt content to different screen sizes automatically.
Touch Icons
Apple touch icons and favicons displayed when users add the site to their home screen on mobile devices.
Readable Font Size
Base font size should be at least 16px on mobile to ensure text is readable without zooming.
Relative Units
Using em, rem, %, or vw instead of fixed px values allows content to scale properly across screen sizes.
No H-Scroll Risk
No elements wider than the viewport that would cause horizontal scrolling on mobile devices.
Tap Targets OK
Interactive elements (buttons, links) are at least 48x48px with enough spacing to prevent accidental taps.
No Fixed Widths
No elements with fixed pixel widths that could overflow on smaller screens and break the layout.
4 recommendations
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

arial

WCAG Fail
63/100
Readability
/30
21/30

18px · LH --

Hierarchy
/20
10/20
WCAG
/25
12/25

1:1 min contrast

Performance
/25
20/25

System fonts

Heading Font

arial

Body Font

arial

Sans18px

Contrast Ratio

1:1

9 issues

Reading Comfort

Single Family

center aligned
18px
p

✅ Excellent readability: 18px body text is ideal for all devices.

❌ Very complex text: Flesch score 25/100. Consider shorter sentences and simpler words.

❌ Low contrast: 9 elements fail WCAG AA (min 1.0:1). Increase text/background contrast.

✅ System fonts: Zero font loading delay — best possible LCP impact.

Flesch 25

Color Palette

7 unique colors
4.71:1 AA Dark
#1f1f21
Other· 45.2%
#878a86
Other· 6.1%
#090f16
Primary· 23.1%
#473621
Secondary· 7.9%
#030103
Secondary· 5.8%

Sponsored

Scripts & Styles

1 Resources

0
Scripts
1
Styles
0
Async
0
Defer

Top Script Sources

Website Identity

naic.edu

Location detected: 🇺🇸 United Statesvia ip

Sponsored

Last analyzed: 02 May 2026 at 09:27

Historical Analysis & Change Tracking