bt21.com Website Information
Daily Unique Visits: 973
Daily Page Views: 1,946
Income Per Day: $6
Estimated Value: $1,440
bt21.com is registered under .COM top-level domain. Please check other sites in .COM zone.
No name server records were found.
and is probably hosted by LINE LINE Corporation, JP. See the full list of other websites hosted by LINE LINE Corporation, JP.
The highest website bt21.com position in Alexa rank database was 15207 and the lowest rank position was 930464. Current position of bt21.com in Alexa rank database is 737062.
Desktop speed score of bt21.com (60/100) is better than the results of 35.69% of other sites and shows that the page desktop performance can be improved.
Mobile usability score of bt21.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 bt21.com (56/100) is better than the results of 45.93% of other sites and shows that the landing page performance on mobile devices is poor and can be improved.
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bt21.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.
bt21.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.
Registry Domain ID: 1555325921_DOMAIN_COM-VRSN
Registrar WHOIS Server: whois.gabia.com
Registrar URL: http://www.gabia.com
Updated Date: 2023-04-20T07:20:20Z
Creation Date: 2009-05-11T18:21:04Z
Registry Expiry Date: 2026-05-11T18:21:04Z
Registrar: Gabia, Inc.
Registrar IANA ID: 244
Registrar Abuse Contact Email: abuse@gabia.com
Registrar Abuse Contact Phone: +82.2.829.3543
Domain Status: clientTransferProhibited https://icann.org/epp#clientTransferProhibited
Name Server: ADNS1.NAVER.COM
Name Server: ADNS2.NAVER.COM
Name Server: NS1.NAVER.JP
Name Server: NS2.NAVER.JP
DNSSEC: unsigned
URL of the ICANN Whois Inaccuracy Complaint Form: https://www.icann.org/wicf/
>>> Last update of whois database: 2023-12-24T07:09:52Z
bt21.com server information
Servers Location
bt21.com desktop page speed rank
Last tested: 2017-12-30
bt21.com Desktop Speed Test Quick Summary
priority - 27Optimize images
Properly formatting and compressing images can save many bytes of data.
Optimize the following images to reduce their size by 260.2KiB (87% reduction).
Compressing and resizing https://www.bt21.com/img/thumb_sticker03.png could save 5.1KiB (66% reduction).
priority - 24Enable 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 229.7KiB (81% reduction).
Compressing https://www.bt21.com/css/bt21.css?release=201712200808 could save 38.7KiB (85% reduction).
Compressing https://www.bt21.com/ could save 4.5KiB (61% reduction).
Compressing https://www.bt21.com/js/common.js?release=201712200808 could save 1.9KiB (66% reduction).
Compressing https://www.bt21.com/css/slick.css could save 1.3KiB (70% reduction).
priority - 7Avoid landing page redirects
Your page has 2 redirects. Redirects introduce additional delays before the page can be loaded.
Avoid landing page redirects for the following chain of redirected URLs.
http://www.bt21.com/
https://www.bt21.com/
priority - 6Minify 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 58.2KiB (26% reduction).
Minifying https://www.bt21.com/js/common.js?release=201712200808 could save 687B (23% reduction).
priority - 4Eliminate render-blocking JavaScript and CSS in above-the-fold content
Your page has 1 blocking CSS resources. This causes a delay in rendering your page.
Optimize CSS Delivery of the following:
priority - 1Leverage 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://www.google-analytics.com/analytics.js (2 hours)
https://www.bt21.com/content/201712/pc_main_top_01.jpg (24 hours)
priority - 1Minify CSS
Compacting CSS code can save many bytes of data and speed up download and parse times.
Minify CSS for the following resources to reduce their size by 9.2KiB (21% reduction).
priority - 0Reduce server response time
priority - 0Minify HTML
Compacting HTML code, including any inline JavaScript and CSS contained in it, can save many bytes of data and speed up download and parse times.
Minify HTML for the following resources to reduce their size by 2.1KiB (29% reduction).
bt21.com Desktop Resource Breakdown
| Total Resources | 21 |
| Number of Hosts | 6 |
| Static Resources | 16 |
| JavaScript Resources | 5 |
| CSS Resources | 2 |
bt21.com mobile page speed rank
Last tested: 2017-12-30
bt21.com Mobile Speed Test Quick Summary
priority - 26Avoid landing page redirects
Your page has 2 redirects. Redirects introduce additional delays before the page can be loaded.
Avoid landing page redirects for the following chain of redirected URLs.
http://www.bt21.com/
https://www.bt21.com/
priority - 23Enable 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 223.2KiB (81% reduction).
Compressing https://www.bt21.com/css/w_bt21.css?release=201712200804 could save 34.6KiB (84% reduction).
Compressing https://www.bt21.com/ could save 3.4KiB (60% reduction).
Compressing https://www.bt21.com/js/common.js?release=201712200804 could save 1.9KiB (66% reduction).
priority - 16Eliminate render-blocking JavaScript and CSS in above-the-fold content
Your page has 1 blocking CSS resources. This causes a delay in rendering your page.
Optimize CSS Delivery of the following:
priority - 10Optimize images
Properly formatting and compressing images can save many bytes of data.
Optimize the following images to reduce their size by 100.1KiB (46% reduction).
priority - 6Minify 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 58.2KiB (26% reduction).
Minifying https://www.bt21.com/js/common.js?release=201712200804 could save 687B (23% reduction).
priority - 2Leverage 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://www.google-analytics.com/analytics.js (2 hours)
https://www.bt21.com/content/201712/main_top_01.jpg (24 hours)
priority - 1Minify CSS
Compacting CSS code can save many bytes of data and speed up download and parse times.
Minify CSS for the following resources to reduce their size by 8.2KiB (21% reduction).
priority - 0Minify HTML
Compacting HTML code, including any inline JavaScript and CSS contained in it, can save many bytes of data and speed up download and parse times.
Minify HTML for the following resources to reduce their size by 1.4KiB (25% reduction).
priority - 0Reduce server response time
bt21.com Mobile Resource Breakdown
| Total Resources | 23 |
| Number of Hosts | 6 |
| Static Resources | 18 |
| JavaScript Resources | 5 |
| CSS Resources | 1 |
bt21.com mobile page usability
Last tested: 2017-12-30
bt21.com HTML validation
Errors
Forbidden code point U+0080.
"...o"> <link rel=âiconâ href=..." Line: 23 Column: - 19
"...nk rel=âiconâ href=â/fav..." Line: 23 Column: - 28
"...iconâ href=â/favicon.icoâ..." Line: 23 Column: - 43
".../favicon.icoâ type=âimag..." Line: 23 Column: - 52
"...n.icoâ type=âimage/x-iconâ..." Line: 23 Column: - 67
"...image/x-iconâ> <link href=..."
Forbidden code point U+009d.
"..."> <link rel=âiconâ href=â..." Line: 23 Column: - 20
"...k rel=âiconâ href=â/favi..." Line: 23 Column: - 29
"...iconâ href=â/favicon.icoâ..." Line: 23 Column: - 44
".../favicon.icoâ type=âimage..." Line: 23 Column: - 53
"....icoâ type=âimage/x-iconâ..." Line: 23 Column: - 68
"...image/x-iconâ> <link href="..."
Bad value “âiconâ” for attribute “rel” on element “link”: The string “âiconâ” is not a registered keyword.
"...con.ico"> <link rel=âiconâ href=â/favicon.icoâ type=âimage/x-iconâ> <link..."
Bad value “â/favicon.icoâ” for attribute “href” on element “link”: Illegal character in path segment: “” is not allowed.
"...con.ico"> <link rel=âiconâ href=â/favicon.icoâ type=âimage/x-iconâ> <link..."
Bad value “âimage/x-iconâ” for attribute “type” on element “link”: Expected a token character but saw “â” instead.
"...con.ico"> <link rel=âiconâ href=â/favicon.icoâ type=âimage/x-iconâ> <link..."
“script” element between “head” and “body”.
"...> </head> <script async src="https://www.googletagmanager.com/gtag/js?id=UA-50391448-6"></scri..."
Cannot recover after last error. Any further errors will be ignored.
"...> </head> <script async src="https://www.googletagmanager.com/gtag/js?id=UA-50391448-6"></scri..."
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bt21.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.
bt21.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.