Tools & Wizards About Us

Report Summary

  • 39

    Performance

    Renders faster than
    58% of other websites

  • 72

    Accessibility

    Visual factors better than
    that of 37% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 64

    SEO

    Google-friendlier than
    24% of websites

dnsbl.info

DNSBL Information - Spam Database and Blacklist Check

Page Load Speed

195 ms in total

First Response

44 ms

Resources Loaded

151 ms

Page Rendered

0 ms

About Website

Click here to check amazing DNSBL content for Morocco. Otherwise, check out these important facts you probably never knew about dnsbl.info

DNS-based block list information/database. Resource to find out information on DNS block lists and check IPs to see if the are block listed in over 100 blacklist in just seconds.

Visit dnsbl.info

Key Findings

We analyzed Dnsbl.info page load time and found that the first response time was 44 ms and then it took 151 ms to load all DOM resources and completely render a web page. This is an excellent result, as only a small number of websites can load faster.

Performance Metrics

dnsbl.info performance score

39

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.0 s

83/100

10%

LCP (Largest Contentful Paint)

Value3.5 s

63/100

25%

SI (Speed Index)

Value14.1 s

1/100

10%

TBT (Total Blocking Time)

Value5,580 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.011

100/100

15%

TTI (Time to Interactive)

Value36.3 s

0/100

10%

Network Requests Diagram

dnsbl.info

44 ms

www.dnsbl.info

32 ms

www.dnsbl.info

24 ms

v1

51 ms

Our browser made a total of 4 requests to load all elements on the main page. We found that all of those requests were addressed to Dnsbl.info and no external sources were called. The less responsive or slowest element that took the longest time to load (51 ms) belongs to the original domain Dnsbl.info.

Page Optimization Overview & Recommendations

Page size can be reduced by 343.5 kB (53%)

Content Size

646.1 kB

After Optimization

302.5 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Dnsbl.info main page is 646.1 kB. This result falls within the top 5000 of lightweight and thus fast loading web pages. Only a small number of websites need less resources to load. Javascripts take 603.4 kB which makes up the majority of the site volume.

HTML Optimization

-57%

Potential reduce by 8.9 kB

  • Original 15.6 kB
  • After minification 15.6 kB
  • After compression 6.7 kB

HTML content can be minified and compressed by a website’s server. The most efficient way is to compress content using GZIP which reduces data amount travelling through the network between server and browser. HTML code on this page is well minified. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 8.9 kB or 57% of the original size.

Image Optimization

-3%

Potential reduce by 641 B

  • Original 23.8 kB
  • After minification 23.2 kB

Image size optimization can help to speed up a website loading time. The chart above shows the difference between the size before and after optimization. DNSBL images are well optimized though.

JavaScript Optimization

-55%

Potential reduce by 331.5 kB

  • Original 603.4 kB
  • After minification 603.4 kB
  • After compression 271.9 kB

It’s better to minify JavaScript in order to improve website performance. The diagram shows the current total size of all JavaScript files against the prospective JavaScript size after its minification and compression. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 331.5 kB or 55% of the original size.

CSS Optimization

-78%

Potential reduce by 2.5 kB

  • Original 3.2 kB
  • After minification 3.2 kB
  • After compression 725 B

CSS files minification is very important to reduce a web page rendering time. The faster CSS files can load, the earlier a page can be rendered. Dnsbl.info needs all CSS files to be minified and compressed as it can save up to 2.5 kB or 78% of the original size.

Requests Breakdown

We found no issues to fix!

Requests Now

1

After Optimization

1

  • JavaScript

The browser has sent 1 CSS, Javascripts, AJAX and image requests in order to completely render the main page of DNSBL. According to our analytics all requests are already optimized.

Network Requests Diagram

Accessibility Review

dnsbl.info accessibility score

72

Accessibility Issues

Names and labels

These are opportunities to improve the semantics of the controls in your application. This may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

Image elements do not have [alt] attributes

High

<input type="image"> elements do not have [alt] text

High

Form elements do not have associated labels

Best Practices

dnsbl.info best practices score

67

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Missing source maps for large first-party JavaScript

SEO Factors

dnsbl.info SEO score

64

Search Engine Optimization Advices

Crawling and Indexing

To appear in search results, crawlers need access to your app.

Impact

Issue

High

Links are not crawlable

Content Best Practices

Format your HTML in a way that enables crawlers to better understand your app’s content.

Impact

Issue

High

Image elements do not have [alt] attributes

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Dnsbl.info can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and it matches the claimed language. Our system also found out that Dnsbl.info main page’s claimed encoding is utf-8. Use of this encoding format is the best practice as the main page visitors from all over the world won’t have any issues with symbol transcription.

Social Sharing Optimization

Open Graph description is not detected on the main page of DNSBL. Lack of Open Graph description can be counter-productive for their social media presence, as such a description allows converting a website homepage (or other pages) into good-looking, rich and well-structured posts, when it is being shared on Facebook and other social media. For example, adding the following code snippet into HTML <head> tag will help to represent this web page correctly in social networks: