JASTRO.OR.JP 公益社団法人日本放射線腫瘍学会

jastro.or.jp Website Information

Daily Unique Visits: 1,181

Daily Page Views: 2,362

Income Per Day: $7

Estimated Value: $1,680

jastro.or.jp is registered under .JP top-level domain. Please check other sites in .JP zone.

No name server records were found.

and is probably hosted by CPI-NET KDDI Web Communications Inc., JP. See the full list of other websites hosted by CPI-NET KDDI Web Communications Inc., JP.

The highest website jastro.or.jp position in Alexa rank database was 14690 and the lowest rank position was 999383. Current position of jastro.or.jp in Alexa rank database is 607288.

Desktop speed score of jastro.or.jp (64/100) is better than the results of 41.34% of other sites and shows that the page desktop performance can be improved.

Mobile usability score of jastro.or.jp (100/100) is better than the results of 100% of other sites and means that the page is mobile-friendly.

Mobile speed score of jastro.or.jp (59/100) is better than the results of 52.41% of other sites and shows that the landing page performance on mobile devices is poor and can be improved.

Advertisement

jastro.or.jp 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.


jastro.or.jp 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.


[ JPRS database provides information on network administration. Its use is ]
[ restricted to network administration purposes. For further information, ]
[ use 'whois -h whois.jprs.jp help'. To suppress Japanese output, add'/e' ]
[ at the end of command, e.g. 'whois -h whois.jprs.jp xxx/e'. ]

Domain Information: [ドメイン情報]
a. [ドメイン名] JASTRO.OR.JP
e. [そしきめい] いっぱんしゃだんほうじんにほんほうしゃせんしゅようがっかい
f. [組織名] 一般社団法人日本放射線腫瘍学会
g. [Organization] Japanese Society for Therapeutic Radiology and Oncology
k. [組織種別] 社団法人
l. [Organization Type] Corporation
m. [登録担当者] YO9464JP
n. [技術連絡担当者] MY35729JP
p. [ネームサーバ] ns4.cpi.ad.jp
p. [ネームサーバ] ns5.cpi.ad.jp
s. [署名鍵]
[状態] Connected (2022/11/30)
[登録年月日] 2009/11/18
[接続年月日] 2010/01/18
[最終更新] 2021/12/01 01:10:08 (JST)

jastro.or.jp server information

Servers Location

jastro.or.jp desktop page speed rank

Last tested: 2015-10-05


Desktop Speed Bad
64/100

jastro.or.jp Desktop Speed Test Quick Summary


priority - 28Leverage 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:

http://jastro.or.jp/cmsdesigner/data/entry/new_ban…ner.00001.00000007.jpg (expiration not specified)
http://jastro.or.jp/cmsdesigner/data/entry/new_ban…ner.00001.00000015.jpg (expiration not specified)
http://jastro.or.jp/images/banner01.jpg (expiration not specified)
http://jastro.or.jp/images/btn_prev_next.png (expiration not specified)
http://jastro.or.jp/images/pagination.png (expiration not specified)
http://jastro.or.jp/images/top_info_bg.png (expiration not specified)
http://jastro.or.jp/images/top_info_bottom.png (expiration not specified)
http://jastro.or.jp/images/topinfo_ttl01.png (expiration not specified)
http://jastro.or.jp/shared/css/base.css (expiration not specified)
http://jastro.or.jp/shared/css/common.css (expiration not specified)
http://jastro.or.jp/shared/css/contents.css (expiration not specified)
http://jastro.or.jp/shared/css/import.css (expiration not specified)
http://jastro.or.jp/shared/css/layout.css (expiration not specified)
http://jastro.or.jp/shared/images/banner_refresh.png (expiration not specified)
http://jastro.or.jp/shared/images/body_bg.png (expiration not specified)
http://jastro.or.jp/shared/images/footer_bg.png (expiration not specified)
http://jastro.or.jp/shared/images/footer_nav01.png (expiration not specified)
http://jastro.or.jp/shared/images/footer_nav02.png (expiration not specified)
http://jastro.or.jp/shared/images/footer_nav_bg.png (expiration not specified)
http://jastro.or.jp/shared/images/gnav01.png (expiration not specified)
http://jastro.or.jp/shared/images/gnav02.png (expiration not specified)
http://jastro.or.jp/shared/images/gnav03.png (expiration not specified)
http://jastro.or.jp/shared/images/gnav04.png (expiration not specified)
http://jastro.or.jp/shared/images/gnav05.png (expiration not specified)
http://jastro.or.jp/shared/images/gnav06.png (expiration not specified)
http://jastro.or.jp/shared/images/gnav07.png (expiration not specified)
http://jastro.or.jp/shared/images/gnav_bg.png (expiration not specified)
http://jastro.or.jp/shared/images/header_item01.png (expiration not specified)
http://jastro.or.jp/shared/images/header_item02.png (expiration not specified)
http://jastro.or.jp/shared/images/header_login_btn.png (expiration not specified)
http://jastro.or.jp/shared/images/header_logo.png (expiration not specified)
http://jastro.or.jp/shared/images/header_nav01.png (expiration not specified)
http://jastro.or.jp/shared/images/header_nav02.png (expiration not specified)
http://jastro.or.jp/shared/images/header_nav03.png (expiration not specified)
http://jastro.or.jp/shared/images/header_nav_bg.png (expiration not specified)
http://jastro.or.jp/shared/images/header_search_btn.png (expiration not specified)
http://jastro.or.jp/shared/images/header_search_ttl.png (expiration not specified)
http://jastro.or.jp/shared/images/pagetop.png (expiration not specified)
http://jastro.or.jp/shared/images/side_advertiser.png (expiration not specified)
http://jastro.or.jp/shared/images/side_banner_ttl.png (expiration not specified)
http://jastro.or.jp/shared/images/side_box_bg.png (expiration not specified)
http://jastro.or.jp/shared/images/side_box_bottom.png (expiration not specified)
http://jastro.or.jp/shared/images/side_btn_accident.png (expiration not specified)
http://jastro.or.jp/shared/images/side_btn_datacenter.png (expiration not specified)
http://jastro.or.jp/shared/images/side_btn_doctorlist.png (expiration not specified)
http://jastro.or.jp/shared/images/side_btn_jtfs.png (expiration not specified)
http://jastro.or.jp/shared/images/side_btn_member.png (expiration not specified)
http://jastro.or.jp/shared/images/side_btn_safety.png (expiration not specified)
http://jastro.or.jp/shared/images/side_btn_solicitation.png (expiration not specified)
http://jastro.or.jp/shared/images/side_btn_system.png (expiration not specified)
http://jastro.or.jp/shared/images/side_map.png (expiration not specified)
http://jastro.or.jp/shared/images/side_map_ttl.png (expiration not specified)
http://jastro.or.jp/shared/js/common.js (expiration not specified)
http://jastro.or.jp/shared/js/jquery-1.9.1.min.js (expiration not specified)
http://jastro.or.jp/shared/js/jquery.slides.min.js (expiration not specified)
http://www.google-analytics.com/ga.js (2 hours)

priority - 11Enable 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 105.5KiB (68% reduction).

Compressing http://jastro.or.jp/shared/js/jquery-1.9.1.min.js could save 58.4KiB (64% reduction).
Compressing http://jastro.or.jp/ could save 12.7KiB (72% reduction).
Compressing http://jastro.or.jp/shared/js/jquery.slides.min.js could save 8.5KiB (74% reduction).
Compressing http://jastro.or.jp/shared/css/layout.css could save 8.3KiB (79% reduction).
Compressing http://jastro.or.jp/cmsdesigner/data/entry/new_banner/new_banner.00001.xml could save 5.2KiB (80% reduction).
Compressing http://jastro.or.jp/shared/css/common.css could save 5.1KiB (76% reduction).
Compressing http://jastro.or.jp/shared/js/common.js could save 3.4KiB (58% reduction).
Compressing http://jastro.or.jp/shared/css/contents.css could save 2.5KiB (71% reduction).
Compressing http://jastro.or.jp/shared/css/base.css could save 1.4KiB (60% reduction).

priority - 10Eliminate render-blocking JavaScript and CSS in above-the-fold content

Your page has 3 blocking script resources and 5 blocking CSS resources. This causes a delay in rendering your page.

Remove render-blocking JavaScript:

http://jastro.or.jp/shared/js/jquery-1.9.1.min.js
http://jastro.or.jp/shared/js/common.js
http://jastro.or.jp/shared/js/jquery.slides.min.js

Optimize CSS Delivery of the following:

http://jastro.or.jp/shared/css/import.css
http://jastro.or.jp/shared/css/base.css
http://jastro.or.jp/shared/css/layout.css
http://jastro.or.jp/shared/css/common.css
http://jastro.or.jp/shared/css/contents.css

priority - 7Optimize images

Properly formatting and compressing images can save many bytes of data.

Optimize the following images to reduce their size by 65.7KiB (10% reduction).

Losslessly compressing http://jastro.or.jp/images/topinfo_ttl01.png could save 4.2KiB (26% reduction).
Losslessly compressing http://jastro.or.jp/shared/images/side_btn_system.png could save 3.3KiB (44% reduction).
Losslessly compressing http://jastro.or.jp/shared/images/side_btn_jtfs.png could save 3.3KiB (41% reduction).
Losslessly compressing http://jastro.or.jp/shared/images/header_logo.png could save 2.9KiB (28% reduction).
Losslessly compressing http://jastro.or.jp/shared/images/footer_nav02.png could save 2.3KiB (66% reduction).
Losslessly compressing http://jastro.or.jp/shared/images/footer_nav01.png could save 2.2KiB (67% reduction).
Losslessly compressing http://jastro.or.jp/shared/images/side_banner_ttl.png could save 2KiB (15% reduction).
Losslessly compressing http://jastro.or.jp/shared/images/side_map_ttl.png could save 2KiB (13% reduction).
Losslessly compressing http://jastro.or.jp/shared/images/gnav04.png could save 1.9KiB (15% reduction).
Losslessly compressing http://jastro.or.jp/shared/images/side_btn_accident.png could save 1.8KiB (24% reduction).
Losslessly compressing http://jastro.or.jp/shared/images/side_btn_safety.png could save 1.7KiB (24% reduction).
Losslessly compressing http://jastro.or.jp/shared/images/side_btn_doctorlist.png could save 1.5KiB (24% reduction).
Losslessly compressing http://jastro.or.jp/shared/images/side_btn_datacenter.png could save 1.5KiB (23% reduction).
Losslessly compressing http://jastro.or.jp/shared/images/side_map.png could save 1.5KiB (19% reduction).
Losslessly compressing http://jastro.or.jp/shared/images/header_item02.png could save 1.5KiB (52% reduction).
Losslessly compressing http://jastro.or.jp/shared/images/header_item01.png could save 1.3KiB (63% reduction).
Losslessly compressing http://jastro.or.jp/shared/images/gnav01.png could save 1.3KiB (17% reduction).
Losslessly compressing http://jastro.or.jp/shared/images/side_btn_member.png could save 1.3KiB (24% reduction).
Losslessly compressing http://jastro.or.jp/shared/images/gnav06.png could save 1.3KiB (7% reduction).
Losslessly compressing http://jastro.or.jp/shared/images/pagetop.png could save 1.3KiB (68% reduction).
Losslessly compressing http://jastro.or.jp/shared/images/header_search_ttl.png could save 1.2KiB (71% reduction).
Losslessly compressing http://jastro.or.jp/images/btn_prev_next.png could save 1.2KiB (60% reduction).
Losslessly compressing http://jastro.or.jp/shared/images/side_btn_solicitation.png could save 1.1KiB (25% reduction).
Losslessly compressing http://jastro.or.jp/shared/images/header_nav02.png could save 1.1KiB (63% reduction).
Losslessly compressing http://jastro.or.jp/shared/images/header_login_btn.png could save 1.1KiB (37% reduction).
Losslessly compressing http://jastro.or.jp/shared/images/banner_refresh.png could save 1.1KiB (70% reduction).
Losslessly compressing http://jastro.or.jp/shared/images/header_nav03.png could save 1KiB (63% reduction).
Losslessly compressing http://jastro.or.jp/shared/images/gnav07.png could save 1,023B (16% reduction).
Losslessly compressing http://jastro.or.jp/shared/images/header_nav01.png could save 1,018B (65% reduction).
Losslessly compressing http://jastro.or.jp/cmsdesigner/viewimg.php?entryn…0000001&/JASTRO281.jpg could save 986B (1% reduction).
Losslessly compressing http://jastro.or.jp/images/top_info_bg.png could save 933B (88% reduction).
Losslessly compressing http://jastro.or.jp/shared/images/side_box_bg.png could save 932B (89% reduction).
Losslessly compressing http://jastro.or.jp/shared/images/footer_nav_bg.png could save 926B (93% reduction).
Losslessly compressing http://jastro.or.jp/cmsdesigner/viewimg.php?entryn…0000001&/jcerg2016.jpg could save 920B (2% reduction).
Losslessly compressing http://jastro.or.jp/shared/images/header_nav_bg.png could save 919B (89% reduction).
Losslessly compressing http://jastro.or.jp/shared/images/footer_bg.png could save 916B (91% reduction).
Losslessly compressing http://jastro.or.jp/shared/images/gnav_bg.png could save 905B (89% reduction).
Losslessly compressing http://jastro.or.jp/shared/images/header_search_btn.png could save 904B (44% reduction).
Losslessly compressing http://jastro.or.jp/cmsdesigner/viewimg.php?entryn…d=00000001&/top_01.jpg could save 899B (1% reduction).
Losslessly compressing http://jastro.or.jp/images/top_info_bottom.png could save 895B (72% reduction).
Losslessly compressing http://jastro.or.jp/shared/images/body_bg.png could save 891B (66% reduction).
Losslessly compressing http://jastro.or.jp/images/pagination.png could save 889B (80% reduction).
Losslessly compressing http://jastro.or.jp/shared/images/side_box_bottom.png could save 881B (72% reduction).
Losslessly compressing http://jastro.or.jp/shared/images/side_advertiser.png could save 873B (16% reduction).
Losslessly compressing http://jastro.or.jp/shared/images/gnav03.png could save 721B (16% reduction).
Losslessly compressing http://jastro.or.jp/cmsdesigner/viewimg.php?entryn…0001&/banner.jpg&w=502 could save 654B (14% reduction).
Losslessly compressing http://jastro.or.jp/cmsdesigner/viewimg.php?entryn…top_senshin2.jpg&w=502 could save 611B (12% reduction).
Losslessly compressing http://jastro.or.jp/cmsdesigner/viewimg.php?entryn…0001&/sisetu.jpg&w=502 could save 607B (7% reduction).

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 5.5KiB (25% reduction).

Minifying http://jastro.or.jp/shared/css/layout.css could save 2.7KiB (27% reduction).
Minifying http://jastro.or.jp/shared/css/common.css could save 1.6KiB (24% reduction).
Minifying http://jastro.or.jp/shared/css/contents.css could save 732B (21% reduction).
Minifying http://jastro.or.jp/shared/css/base.css could save 527B (23% reduction).

priority - 0Reduce server response time

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 2.6KiB (45% reduction).

Minifying http://jastro.or.jp/shared/js/common.js could save 2.6KiB (45% 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 904B (6% reduction).

Minifying http://jastro.or.jp/ could save 904B (6% reduction).

jastro.or.jp Desktop Resource Breakdown

Total Resources65
Number of Hosts2
Static Resources56
JavaScript Resources4
CSS Resources5

jastro.or.jp mobile page speed rank

Last tested: 2017-11-01


Mobile Speed Bad
59/100

jastro.or.jp 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://jastro.or.jp/
http://www.jastro.or.jp/
https://www.jastro.or.jp/

priority - 18Enable 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 170.9KiB (70% reduction).

Compressing https://www.jastro.or.jp/shared/js/jquery-1.11.3.min.js could save 61.2KiB (65% reduction).
Compressing https://www.jastro.or.jp/shared/js/common.js could save 35KiB (74% reduction).
Compressing https://www.jastro.or.jp/shared/css/layout.css could save 17.6KiB (79% reduction).
Compressing https://www.jastro.or.jp/shared/css/common.css could save 17.5KiB (79% reduction).
Compressing https://www.jastro.or.jp/movie/js/jquery.fancybox.pack.js could save 14.2KiB (62% reduction).
Compressing https://www.jastro.or.jp/shared/css/responsive.css could save 9.6KiB (77% reduction).
Compressing https://www.jastro.or.jp/shared/css/home.css could save 8.9KiB (79% reduction).
Compressing https://www.jastro.or.jp/movie/css/jquery.fancybox.css could save 3.6KiB (71% reduction).
Compressing https://www.jastro.or.jp/ could save 1.8KiB (61% reduction).
Compressing https://www.jastro.or.jp/shared/js/responsive.js could save 1.6KiB (67% 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:

https://www.jastro.or.jp/shared/css/layout.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://www.jastro.or.jp/images/home_arw01.png (expiration not specified)
https://www.jastro.or.jp/images/home_logo.png (expiration not specified)
https://www.jastro.or.jp/images/home_menu01.png (expiration not specified)
https://www.jastro.or.jp/images/home_menu02.png (expiration not specified)
https://www.jastro.or.jp/images/home_menu03.png (expiration not specified)
https://www.jastro.or.jp/images/home_visual.png (expiration not specified)
https://www.jastro.or.jp/movie/css/jquery.fancybox.css (expiration not specified)
https://www.jastro.or.jp/movie/js/jquery.fancybox.pack.js (expiration not specified)
https://www.jastro.or.jp/shared/css/common.css (expiration not specified)
https://www.jastro.or.jp/shared/css/home.css (expiration not specified)
https://www.jastro.or.jp/shared/css/layout.css (expiration not specified)
https://www.jastro.or.jp/shared/css/responsive.css (expiration not specified)
https://www.jastro.or.jp/shared/js/common.js (expiration not specified)
https://www.jastro.or.jp/shared/js/enhancelinks.js (expiration not specified)
https://www.jastro.or.jp/shared/js/ga.js (expiration not specified)
https://www.jastro.or.jp/shared/js/home.js (expiration not specified)
https://www.jastro.or.jp/shared/js/jquery-1.11.3.min.js (expiration not specified)
https://www.jastro.or.jp/shared/js/responsive.js (expiration not specified)
https://ssl.google-analytics.com/ga.js (2 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 14.2KiB (20% reduction).

Minifying https://www.jastro.or.jp/shared/css/layout.css could save 4.8KiB (22% reduction).
Minifying https://www.jastro.or.jp/shared/css/common.css could save 4.3KiB (20% reduction).
Minifying https://www.jastro.or.jp/shared/css/responsive.css could save 2.5KiB (21% reduction).
Minifying https://www.jastro.or.jp/shared/css/home.css could save 1.7KiB (15% reduction).
Minifying https://www.jastro.or.jp/movie/css/jquery.fancybox.css could save 961B (19% reduction).

priority - 0Optimize images

Properly formatting and compressing images can save many bytes of data.

Optimize the following images to reduce their size by 1.5KiB (29% reduction).

Compressing https://www.jastro.or.jp/images/home_logo.png could save 1.5KiB (29% 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 767B (32% reduction).

Minifying https://www.jastro.or.jp/shared/js/responsive.js could save 767B (32% reduction).

jastro.or.jp Mobile Resource Breakdown

Total Resources24
Number of Hosts4
Static Resources19
JavaScript Resources8
CSS Resources5

jastro.or.jp mobile page usability

Last tested: 2017-11-01


Mobile Usability Good
100/100

jastro.or.jp HTML validation

jastro.or.jp similar domains

Similar domains:
www.jastro.com
www.jastro.net
www.jastro.org
www.jastro.info
www.jastro.biz
www.jastro.us
www.jastro.mobi
www.astro.or.jp
www.jastro.or.jp
www.nastro.or.jp
www.jnastro.or.jp
www.njastro.or.jp
www.hastro.or.jp
www.jhastro.or.jp
www.hjastro.or.jp
www.uastro.or.jp
www.juastro.or.jp
www.ujastro.or.jp
www.iastro.or.jp
www.jiastro.or.jp
www.ijastro.or.jp
www.kastro.or.jp
www.jkastro.or.jp
www.kjastro.or.jp
www.mastro.or.jp
www.jmastro.or.jp
www.mjastro.or.jp
www.jstro.or.jp
www.jqstro.or.jp
www.jaqstro.or.jp
www.jqastro.or.jp
www.jwstro.or.jp
www.jawstro.or.jp
www.jwastro.or.jp
www.jsstro.or.jp
www.jasstro.or.jp
www.jsastro.or.jp
www.jzstro.or.jp
www.jazstro.or.jp
www.jzastro.or.jp
www.jatro.or.jp
www.jawtro.or.jp
www.jaswtro.or.jp
www.jaetro.or.jp
www.jasetro.or.jp
www.jaestro.or.jp
www.jadtro.or.jp
www.jasdtro.or.jp
www.jadstro.or.jp
www.jaztro.or.jp
www.jasztro.or.jp
www.jaxtro.or.jp
www.jasxtro.or.jp
www.jaxstro.or.jp
www.jaatro.or.jp
www.jasatro.or.jp
www.jaastro.or.jp
www.jasro.or.jp
www.jasrro.or.jp
www.jastrro.or.jp
www.jasrtro.or.jp
www.jasfro.or.jp
www.jastfro.or.jp
www.jasftro.or.jp
www.jasgro.or.jp
www.jastgro.or.jp
www.jasgtro.or.jp
www.jasyro.or.jp
www.jastyro.or.jp
www.jasytro.or.jp
www.jasto.or.jp
www.jasteo.or.jp
www.jastreo.or.jp
www.jastero.or.jp
www.jastdo.or.jp
www.jastrdo.or.jp
www.jastdro.or.jp
www.jastfo.or.jp
www.jastrfo.or.jp
www.jastto.or.jp
www.jastrto.or.jp
www.jasttro.or.jp
www.jastr.or.jp
www.jastri.or.jp
www.jastroi.or.jp
www.jastrio.or.jp
www.jastrk.or.jp
www.jastrok.or.jp
www.jastrko.or.jp
www.jastrl.or.jp
www.jastrol.or.jp
www.jastrlo.or.jp
www.jastrp.or.jp
www.jastrop.or.jp
www.jastrpo.or.jp

jastro.or.jp 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.


jastro.or.jp 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.