inflearn.com Website Information
Daily Unique Visits: 41,906
Daily Page Views: 251,436
Income Per Day: $503
Estimated Value: $362,160
This website is located in United States and is using following IP address 18.239.199.63. See the complete list of popular websites hosted in United States.
inflearn.com is registered under .COM top-level domain. Please check other sites in .COM zone.
Website inflearn.com is using the following name servers:
- ns-1367.awsdns-42.org
- ns-1952.awsdns-52.co.uk
- ns-268.awsdns-33.com
- ns-902.awsdns-48.net
and is probably hosted by AMAZON-02 - Amazon.com, Inc., US. See the full list of other websites hosted by AMAZON-02 - Amazon.com, Inc., US.
The highest website inflearn.com position in Alexa rank database was 33278 and the lowest rank position was 106167. Current position of inflearn.com in Alexa rank database is 34225.
Desktop speed score of inflearn.com (12/100) is better than the results of 1.93% of other sites and shows that the page desktop performance can be improved.
Mobile usability score of inflearn.com (100/100) is better than the results of 100% of other sites and means that the page is mobile-friendly.
Mobile speed score of inflearn.com (17/100) is better than the results of 3.39% of other sites and shows that the landing page performance on mobile devices is poor and can be improved.
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inflearn.com Alexa Rank
The traffic rank is based on three months of aggregated historical traffic data from millions of Alexa Toolbar users and is a combined measure of page views and users.
inflearn.com whois
WHOIS gives you the ability to lookup any generic domains to find out the registered domain holder. WHOIS database are provided for information purposes only. It allows the public to check whether a specific domain name is still available or not and to obtain information related to the registration records of existing domain names.
Domain Name: INFLEARN.COM
Registry Domain ID: 1914087485_DOMAIN_COM-VRSN
Registrar WHOIS Server: whois.gabia.com
Registrar URL: http://www.gabia.com
Updated Date: 2021-02-24T06:10:08Z
Creation Date: 2015-03-28T06:49:50Z
Registry Expiry Date: 2030-03-28T06:49:50Z
Registrar: Gabia, Inc.
Registrar IANA ID: 244
Registrar Abuse Contact Email: abuse@gabia.com
Registrar Abuse Contact Phone: +82.2.829.3543
Domain Status: ok https://icann.org/epp#ok
Name Server: NS-1367.AWSDNS-42.ORG
Name Server: NS-1952.AWSDNS-52.CO.UK
Name Server: NS-268.AWSDNS-33.COM
Name Server: NS-902.AWSDNS-48.NET
DNSSEC: unsigned
URL of the ICANN Whois Inaccuracy Complaint Form: https://www.icann.org/wicf/
>>> Last update of whois database: 2022-02-14T07:06:55Z
Registry Domain ID: 1914087485_DOMAIN_COM-VRSN
Registrar WHOIS Server: whois.gabia.com
Registrar URL: http://www.gabia.com
Updated Date: 2021-02-24T06:10:08Z
Creation Date: 2015-03-28T06:49:50Z
Registry Expiry Date: 2030-03-28T06:49:50Z
Registrar: Gabia, Inc.
Registrar IANA ID: 244
Registrar Abuse Contact Email: abuse@gabia.com
Registrar Abuse Contact Phone: +82.2.829.3543
Domain Status: ok https://icann.org/epp#ok
Name Server: NS-1367.AWSDNS-42.ORG
Name Server: NS-1952.AWSDNS-52.CO.UK
Name Server: NS-268.AWSDNS-33.COM
Name Server: NS-902.AWSDNS-48.NET
DNSSEC: unsigned
URL of the ICANN Whois Inaccuracy Complaint Form: https://www.icann.org/wicf/
>>> Last update of whois database: 2022-02-14T07:06:55Z
inflearn.com server information
Servers Location
inflearn.com desktop page speed rank
Last tested: 2019-11-06
Desktop Speed
Bad
12/100
inflearn.com Desktop Speed Test Quick Summary
priority - 427Optimize images
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priority - 14Avoid landing page redirects
Your page has 3 redirects. Redirects introduce additional delays before the page can be loaded.
Avoid landing page redirects for the following chain of redirected URLs.
http://inflearn.com/
https://inflearn.com/
http://www.inflearn.com/
https://www.inflearn.com/
https://inflearn.com/
http://www.inflearn.com/
https://www.inflearn.com/
priority - 12Eliminate render-blocking JavaScript and CSS in above-the-fold content
Your page has 1 blocking script resources and 6 blocking CSS resources. This causes a delay in rendering your page.
Remove render-blocking JavaScript:
https://wcs.naver.net/wcslog.js
Optimize CSS Delivery of the following:
https://cdn.inflearn.com/dist/css/npm_tinymce.e4b259fb4a3accab893d.css
https://cdn.inflearn.com/dist/css/MAIN.6f25ff2671a118c9a82d.css
https://cdn.inflearn.com/dist/vendor/bulma-accordion.min.css
https://cdn.inflearn.com/dist/vendor/bulma-switch.min.css
https://cdn.inflearn.com/dist/vendor/bulma-tooltip.min.css
https://cdn.inflearn.com/font/font-awesome/css/all.min.css
https://cdn.inflearn.com/dist/css/MAIN.6f25ff2671a118c9a82d.css
https://cdn.inflearn.com/dist/vendor/bulma-accordion.min.css
https://cdn.inflearn.com/dist/vendor/bulma-switch.min.css
https://cdn.inflearn.com/dist/vendor/bulma-tooltip.min.css
https://cdn.inflearn.com/font/font-awesome/css/all.min.css
priority - 10Leverage browser caching
Setting an expiry date or a maximum age in the HTTP headers for static resources instructs the browser to load previously downloaded resources from local disk rather than over the network.
Leverage browser caching for the following cacheable resources:
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https://cdn.inflearn.com/assets/images/main/instructor_ljj.png (expiration not specified)
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https://cdn.inflearn.com/assets/images/main/ufo2.png (expiration not specified)
https://cdn.inflearn.com/public/users/thumbnails/thumbnail_default.png (expiration not specified)
https://static.dable.io/dist/plugin.min.js (expiration not specified)
https://static.hotjar.com/c/hotjar-1039300.js?sv=5 (60 seconds)
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https://cdn.channel.io/plugin/ch-plugin-core-20191028073300.js (60 minutes)
https://cdn.channel.io/plugin/ch-plugin-web.js (60 minutes)
https://www.google-analytics.com/analytics.js (2 hours)
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https://cdn.channel.io/plugin/images/ch-new-launcher-icon-68.png (expiration not specified)
https://cdn.inflearn.com/assets/images/main/background_tree.png (expiration not specified)
https://cdn.inflearn.com/assets/images/main/instructor_bks.jpg (expiration not specified)
https://cdn.inflearn.com/assets/images/main/instructor_keg.png (expiration not specified)
https://cdn.inflearn.com/assets/images/main/instructor_ljj.png (expiration not specified)
https://cdn.inflearn.com/assets/images/main/night_midnight-min.jpg (expiration not specified)
https://cdn.inflearn.com/assets/images/main/ufo2.png (expiration not specified)
https://cdn.inflearn.com/public/users/thumbnails/thumbnail_default.png (expiration not specified)
https://static.dable.io/dist/plugin.min.js (expiration not specified)
https://static.hotjar.com/c/hotjar-1039300.js?sv=5 (60 seconds)
https://static.hotjar.com/c/hotjar-1070825.js?sv=6 (60 seconds)
https://www.google-analytics.com/gtm/js?id=GTM-T28…d=407472580.1573004210 (15 minutes)
https://www.googletagmanager.com/gtm.js?id=GTM-MVM7ZHX (15 minutes)
https://connect.facebook.net/en_US/fbevents.js (20 minutes)
https://wcs.naver.net/wcslog.js (45.1 minutes)
https://cdn.channel.io/plugin/ch-plugin-core-20191028073300.js (60 minutes)
https://cdn.channel.io/plugin/ch-plugin-web.js (60 minutes)
https://www.google-analytics.com/analytics.js (2 hours)
priority - 6Enable compression
Compressing resources with gzip or deflate can reduce the number of bytes sent over the network.
Enable compression for the following resources to reduce their transfer size by 63.2KiB (78% reduction).
Compressing https://cdn.inflearn.com/font/font-awesome/css/all.min.css could save 62KiB (79% reduction).
Compressing https://api.channel.io/app/plugins/03b642d1-f3a1-4…9-ebfb5afb5391/boot/v2 could save 1.1KiB (50% reduction).
Compressing https://api.channel.io/app/plugins/5479/events/v2 could save 118B (24% reduction).
Compressing https://api.channel.io/app/plugins/03b642d1-f3a1-4…9-ebfb5afb5391/boot/v2 could save 1.1KiB (50% reduction).
Compressing https://api.channel.io/app/plugins/5479/events/v2 could save 118B (24% reduction).
priority - 5Reduce server response time
In our test, your server responded in 0.71 seconds.
inflearn.com Desktop Resource Breakdown
| Total Resources | 122 |
| Number of Hosts | 21 |
| Static Resources | 104 |
| JavaScript Resources | 24 |
| CSS Resources | 6 |
inflearn.com mobile page speed rank
Last tested: 2019-08-20
Mobile Speed
Bad
17/100
inflearn.com Mobile Speed Test Quick Summary
priority - 284Optimize images
Properly formatting and compressing images can save many bytes of data.
Optimize the following images to reduce their size by 2.7MiB (75% reduction).
Compressing and resizing https://cdn.inflearn.com/public/courses/324154/cou…%EC%A0%84%EB%9E%B5.jpg could save 639.3KiB (98% reduction).
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priority - 51Avoid landing page redirects
Your page has 3 redirects. Redirects introduce additional delays before the page can be loaded.
Avoid landing page redirects for the following chain of redirected URLs.
http://inflearn.com/
https://inflearn.com/
http://www.inflearn.com/
https://www.inflearn.com/
https://inflearn.com/
http://www.inflearn.com/
https://www.inflearn.com/
priority - 48Eliminate render-blocking JavaScript and CSS in above-the-fold content
Your page has 6 blocking CSS resources. This causes a delay in rendering your page.
Optimize CSS Delivery of the following:
https://cdn.inflearn.com/dist/css/npm_tinymce.bba3ea3153ae7158a2a6.css
https://cdn.inflearn.com/dist/css/MAIN.e9309a34e3983015ea0c.css
https://cdn.inflearn.com/dist/vendor/bulma-accordion.min.css
https://cdn.inflearn.com/dist/vendor/bulma-switch.min.css
https://cdn.inflearn.com/dist/vendor/bulma-tooltip.min.css
https://cdn.inflearn.com/font/font-awesome/css/all.min.css
https://cdn.inflearn.com/dist/css/MAIN.e9309a34e3983015ea0c.css
https://cdn.inflearn.com/dist/vendor/bulma-accordion.min.css
https://cdn.inflearn.com/dist/vendor/bulma-switch.min.css
https://cdn.inflearn.com/dist/vendor/bulma-tooltip.min.css
https://cdn.inflearn.com/font/font-awesome/css/all.min.css
priority - 14Leverage browser caching
Setting an expiry date or a maximum age in the HTTP headers for static resources instructs the browser to load previously downloaded resources from local disk rather than over the network.
Leverage browser caching for the following cacheable resources:
https://api.channel.io/app/plugins/5479/events/v2 (expiration not specified)
https://cdn.channel.io/emoji/v3/emojis.min.json (expiration not specified)
https://cdn.channel.io/plugin/images/ch-new-launcher-icon-56.png (expiration not specified)
https://cdn.inflearn.com/assets/images/main/backgroud_top_0.jpg (expiration not specified)
https://cdn.inflearn.com/assets/images/main/instructor_jgh.png (expiration not specified)
https://cdn.inflearn.com/assets/images/main/instructor_ldu.png (expiration not specified)
https://cdn.inflearn.com/assets/images/main/instructor_ljj.png (expiration not specified)
https://s3.ap-northeast-2.amazonaws.com/ant-man-te…/thumbnail_default.png (expiration not specified)
https://static.dable.io/dist/plugin.min.js (expiration not specified)
https://static.hotjar.com/c/hotjar-1039300.js?sv=5 (60 seconds)
https://static.hotjar.com/c/hotjar-1070825.js?sv=6 (60 seconds)
https://www.google-analytics.com/gtm/js?id=GTM-T28…d=404851527.1566303141 (15 minutes)
https://www.googletagmanager.com/gtm.js?id=GTM-MVM7ZHX (15 minutes)
https://connect.facebook.net/en_US/fbevents.js (20 minutes)
https://connect.facebook.net/signals/config/718931…74402?v=2.9.2&r=stable (20 minutes)
https://connect.facebook.net/signals/plugins/inferredEvents.js?v=2.9.2 (20 minutes)
https://cdn.channel.io/plugin/ch-plugin-core-20190819150411.js (60 minutes)
https://cdn.channel.io/plugin/ch-plugin-web.js (60 minutes)
https://www.google-analytics.com/analytics.js (2 hours)
https://cdn.channel.io/emoji/v3/emojis.min.json (expiration not specified)
https://cdn.channel.io/plugin/images/ch-new-launcher-icon-56.png (expiration not specified)
https://cdn.inflearn.com/assets/images/main/backgroud_top_0.jpg (expiration not specified)
https://cdn.inflearn.com/assets/images/main/instructor_jgh.png (expiration not specified)
https://cdn.inflearn.com/assets/images/main/instructor_ldu.png (expiration not specified)
https://cdn.inflearn.com/assets/images/main/instructor_ljj.png (expiration not specified)
https://s3.ap-northeast-2.amazonaws.com/ant-man-te…/thumbnail_default.png (expiration not specified)
https://static.dable.io/dist/plugin.min.js (expiration not specified)
https://static.hotjar.com/c/hotjar-1039300.js?sv=5 (60 seconds)
https://static.hotjar.com/c/hotjar-1070825.js?sv=6 (60 seconds)
https://www.google-analytics.com/gtm/js?id=GTM-T28…d=404851527.1566303141 (15 minutes)
https://www.googletagmanager.com/gtm.js?id=GTM-MVM7ZHX (15 minutes)
https://connect.facebook.net/en_US/fbevents.js (20 minutes)
https://connect.facebook.net/signals/config/718931…74402?v=2.9.2&r=stable (20 minutes)
https://connect.facebook.net/signals/plugins/inferredEvents.js?v=2.9.2 (20 minutes)
https://cdn.channel.io/plugin/ch-plugin-core-20190819150411.js (60 minutes)
https://cdn.channel.io/plugin/ch-plugin-web.js (60 minutes)
https://www.google-analytics.com/analytics.js (2 hours)
priority - 0Reduce server response time
In our test, your server responded in 0.23 seconds.
priority - 0Enable compression
Compressing resources with gzip or deflate can reduce the number of bytes sent over the network.
Enable compression for the following resources to reduce their transfer size by 1.3KiB (45% reduction).
Compressing https://api.channel.io/app/plugins/03b642d1-f3a1-4…9-ebfb5afb5391/boot/v2 could save 1.1KiB (49% reduction).
Compressing https://api.channel.io/app/plugins/5479/events/v2 could save 122B (25% reduction).
Compressing https://api.channel.io/app/plugins/5479/events/v2 could save 122B (25% reduction).
priority - 0Minify JavaScript
Compacting JavaScript code can save many bytes of data and speed up downloading, parsing, and execution time.
Minify JavaScript for the following resources to reduce their size by 646B (85% reduction).
Minifying https://connect.facebook.net/signals/plugins/inferredEvents.js?v=2.9.2 could save 646B (85% reduction) after compression.
inflearn.com Mobile Resource Breakdown
| Total Resources | 97 |
| Number of Hosts | 21 |
| Static Resources | 79 |
| JavaScript Resources | 24 |
| CSS Resources | 6 |
inflearn.com mobile page usability
Last tested: 2019-08-20
Mobile Usability
Good
100/100
inflearn.com HTML validation
Errors
Bad value “https://api.w.org/” for attribute “rel” on element “link”: The string “https://api.w.org/” is not a registered keyword.
Line: 165 Column: 3 - 76
"...Pro --> <link rel='https://api.w.org/' href='https://www.inflearn.com/wp-json/' /> <link..."
"...Pro --> <link rel='https://api.w.org/' href='https://www.inflearn.com/wp-json/' /> <link..."
Duplicate attribute “alt”.
Line: 211 Column: - 374
".../logog.png" alt="인프런" /></a> ..."
".../logog.png" alt="인프런" /></a> ..."
Duplicate attribute “name”.
Line: 239 Column: - 39
"...ame="form" name="login-form" c..."
"...ame="form" name="login-form" c..."
Duplicate attribute “href”.
Line: 264 Column: - 135
"...pregister" href="#" >아이디 만들기</..."
"...pregister" href="#" >아이디 만들기</..."
Element “style” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)
Line: 272 Column: 1 - 23
"...gin/ --> <style type="text/css"> .wp-s..." Line: 336 Column: 1 - 7
"..._first" > <style>#paral..." Line: 524 Column: 592 - 598
"...:""}</div><style>ul.gri..." Line: 562 Column: 628 - 634
"...:""}</div><style>ul.gri..." Line: 648 Column: 123 - 129
"...xtwidget"><style> #butt..." Line: 649 Column: 1 - 7
"...공유참여 </a> <style> #butt..."
"...gin/ --> <style type="text/css"> .wp-s..." Line: 336 Column: 1 - 7
"..._first" > <style>#paral..." Line: 524 Column: 592 - 598
"...:""}</div><style>ul.gri..." Line: 562 Column: 628 - 634
"...:""}</div><style>ul.gri..." Line: 648 Column: 123 - 129
"...xtwidget"><style> #butt..." Line: 649 Column: 1 - 7
"...공유참여 </a> <style> #butt..."
End tag “section” seen, but there were open elements.
Line: 332 Column: 31 - 40
"... </section> ..." Line: 488 Column: 41 - 50
"... </section> ..." Line: 503 Column: 41 - 50
"... </section> ..." Line: 519 Column: 41 - 50
"... </section> ..." Line: 557 Column: 41 - 50
"... </section> ..." Line: 612 Column: 41 - 50
"... </section> ..."
"... </section> ..." Line: 488 Column: 41 - 50
"... </section> ..." Line: 503 Column: 41 - 50
"... </section> ..." Line: 519 Column: 41 - 50
"... </section> ..." Line: 557 Column: 41 - 50
"... </section> ..." Line: 612 Column: 41 - 50
"... </section> ..."
Unclosed element “div”.
Line: 327 Column: 13 - 35
"... <div class="col-md-12"> ..." Line: 326 Column: 9 - 25
"...> <div class="row"> ..." Line: 325 Column: 5 - 27
"...ent"> <div class="container"> ..." Line: 484 Column: 33 - 55
"... <div class='container'> ..." Line: 499 Column: 47 - 69
"... <div class='container'> ..." Line: 515 Column: 47 - 69
"... <div class='container'> ..." Line: 553 Column: 47 - 69
"... <div class='container'> ..." Line: 608 Column: 47 - 69
"... <div class='container'> ..."
"... <div class="col-md-12"> ..." Line: 326 Column: 9 - 25
"...> <div class="row"> ..." Line: 325 Column: 5 - 27
"...ent"> <div class="container"> ..." Line: 484 Column: 33 - 55
"... <div class='container'> ..." Line: 499 Column: 47 - 69
"... <div class='container'> ..." Line: 515 Column: 47 - 69
"... <div class='container'> ..." Line: 553 Column: 47 - 69
"... <div class='container'> ..." Line: 608 Column: 47 - 69
"... <div class='container'> ..."
“=” in an unquoted attribute value. Probable causes: Attributes running together or a URL query string in an unquoted attribute value.
Line: 462 Column: - 68
"...ev= data-scroll=2 data-height=..."
"...ev= data-scroll=2 data-height=..."
No “p” element in scope but a “p” end tag seen.
Line: 469 Column: 20 - 23
"... </form></p> <h4>배..."
"... </form></p> <h4>배..."
Element “style” not allowed as child of element “span” in this context. (Suppressing further errors from this subtree.)
Line: 617 Column: 119 - 125
"...lass="s1"><style> #butt..."
"...lass="s1"><style> #butt..."
End tag “div” seen, but there were open elements.
Line: 628 Column: 9 - 14
"...> </div> <..."
"...> </div> <..."
Unclosed element “section”.
Line: 622 Column: 43 - 75
"... <section class='main nextstripe'> ..."
"... <section class='main nextstripe'> ..."
Stray end tag “section”.
Line: 630 Column: 1 - 10
"... </div> </section> <foot..."
"... </div> </section> <foot..."
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Line: 646 Column: 46 - 117
"...ome/@인프런"><img src="https://inflearn.com/wp-content/uploads/yellowIDbanner.jpg" /></a></..." Line: 881 Column: 11 - 2
"...<noscript><img height="1" width="1" style="display:none" src="https://www.facebook.com/tr?id=718931344874402&ev=PageView&noscript=1" /></nosc..."
"...ome/@인프런"><img src="https://inflearn.com/wp-content/uploads/yellowIDbanner.jpg" /></a></..." Line: 881 Column: 11 - 2
"...<noscript><img height="1" width="1" style="display:none" src="https://www.facebook.com/tr?id=718931344874402&ev=PageView&noscript=1" /></nosc..."
Stray end tag “div”.
Line: 687 Column: 1 - 6
".../div> --> </div><!-- E..." Line: 688 Column: 1 - 6
"...USHER --> </div><!-- E..."
".../div> --> </div><!-- E..." Line: 688 Column: 1 - 6
"...USHER --> </div><!-- E..."
Element “style” not allowed as child of element “body” in this context. (Suppressing further errors from this subtree.)
Line: 690 Column: 3 - 25
"...PTS --> <style type="text/css"> @i..."
"...PTS --> <style type="text/css"> @i..."
Duplicate ID “s”.
Line: 780 Column: 17 - 93
"... <input type="text" value="" name="s" id="s" placeholder="원하는 강좌를 찾아보세요.^^" /> ..."
"... <input type="text" value="" name="s" id="s" placeholder="원하는 강좌를 찾아보세요.^^" /> ..."
End of file inside comment.
Line: 883 Column: - 7
"...→</body> </html>..."
"...→</body> </html>..."
Warnings
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
Line: 314 Column: 1 - 20
"...</header> <section id="title"> <..." Line: 324 Column: 1 - 22
".../section> <section id="content"> <..." Line: 483 Column: 31 - 52
"... <section class='main'> ..." Line: 489 Column: 41 - 64
"... <section class='stripe'> ..." Line: 498 Column: 43 - 75
"... <section class='main nextstripe'> ..." Line: 514 Column: 43 - 75
"... <section class='main nextstripe'> ..." Line: 552 Column: 43 - 75
"... <section class='main nextstripe'> ..." Line: 607 Column: 43 - 75
"... <section class='main nextstripe'> ..." Line: 613 Column: 41 - 64
"... <section class='stripe'> ..." Line: 622 Column: 43 - 75
"... <section class='main nextstripe'> ..."
"...</header> <section id="title"> <..." Line: 324 Column: 1 - 22
".../section> <section id="content"> <..." Line: 483 Column: 31 - 52
"... <section class='main'> ..." Line: 489 Column: 41 - 64
"... <section class='stripe'> ..." Line: 498 Column: 43 - 75
"... <section class='main nextstripe'> ..." Line: 514 Column: 43 - 75
"... <section class='main nextstripe'> ..." Line: 552 Column: 43 - 75
"... <section class='main nextstripe'> ..." Line: 607 Column: 43 - 75
"... <section class='main nextstripe'> ..." Line: 613 Column: 41 - 64
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"... <section class='main nextstripe'> ..."
The first occurrence of ID “s” was here.
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"...e" /> <input type="text" value="" name="s" id="s" placeholder="배우고 싶은 분야를 검색해 보세요!" /> ..."
"...e" /> <input type="text" value="" name="s" id="s" placeholder="배우고 싶은 분야를 검색해 보세요!" /> ..."
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inflearn.com Ping
Ping is a computer network administration software utility used to test the reachability of a host on an Internet Protocol (IP) network. It measures the round-trip time for messages sent from the originating host to a destination computer that are echoed back to the source.
inflearn.com TRACEROUTE
Traceroute is a computer network diagnostic tool for displaying the route (path) and measuring transit delays of packets across an Internet Protocol (IP) network. The history of the route is recorded as the round-trip times of the packets received from each successive host (remote node) in the route (path); the sum of the mean times in each hop is a measure of the total time spent to establish the connection. Traceroute proceeds unless all (three) sent packets are lost more than twice, then the connection is lost and the route cannot be evaluated.