info.cometoj.com
Registered
Page analyze update date:
2026/06/13 14:09:00
Last whois update date:
2026/03/27 11:00:17
Domain Status
Registered
Paid till
29.10.2028
Available from
28.11.2028
×
![Fullscreen website screenshot]()
info.cometoj.com Website screenshot
SEO Score
48.63%
71
Score achieved
146
Maximum score
Main Information
Title: Comet OJ"|常规赛题目难度说明
Description: comet OJ(www.zhixincode.com)高质量 ACM/OI 比赛,原创 ACM/OI 比赛,ACM/OI 比赛解析,ACM/OI 比赛直播题解,最新 ACM 算法题,经典算法题,CCPC-Wannafly Winter Camp,Wannafly Winter Camp，质心教育信息学竞赛
Keywords: unknown
Page Encoding:
utf-8
Page Filesize: 756 KB
Server Information
IP: 182.92.254.107
Location: China,CN,Beijing,,39.911,116.395,Asia/Shanghai
Encoding: utf-8
Meta Tags List
- head: ssr charset: utf-8
- head: ssr name: keywords content: COMETOJ COMET ACM OI OJ 质心 质心教育 信息学 信息学竞赛 NOI NOIP CCPC ICPC CCPC-Wannafly Winter Camp Wannafly Winter Camp
- head: ssr name: viewport content: width=device-width, initial-scale=1.0, user-scalable=no
- head: ssr hid: description name: description content: comet OJ(www.zhixincode.com)高质量 ACM/OI 比赛,原创 ACM/OI 比赛,ACM/OI 比赛解析,ACM/OI 比赛直播题解,最新 ACM 算法题,经典算法题,CCPC-Wannafly Winter Camp,Wannafly Winter Camp，质心教育信息学竞赛
Internal Links
External Links
Whois Information
domain_name: cometoj.com
update_date: 2018-12-25T05:11:07Z
update_time: 1545714667
creation_date: 2018-10-29T02:50:34Z
creation_time: 1540781434
expiration_date: 2028-10-29T02:50:34Z
Whois Raw Data
Domain Name: COMETOJ.COM
Registrar: Alibaba Cloud Computing (Beijing) Co., Ltd.
Domain Status: active
Creation Date: 2018-10-29T02:50:34Z
Registry Expiry Date: 2028-10-29T02:50:34Z
Updated Date: 2018-12-25T05:11:07Z
Name Server: DNS17.HICHINA.COM
Name Server: DNS18.HICHINA.COM
REGISTRAR Contact: Alibaba Cloud Computing (Beijing) Co., Ltd.
>>> Last update of RDAP database: 2026-03-27T11:00:17Z
SEO Audit
Technical SEO
✓
Response Code
200
Status 200 OK - page loads correctly.
✓
Character Encoding
Page: utf-8, Header: utf-8
Character encoding consistent between HTML and headers.
✓
Page Size
774975 bytes
Page size acceptable for fast loading.
✓
Resources
15 total
Optimal number of resources.
✓
Hreflang Tags
0 hreflang tags
Add hreflang tags if you have multilingual content.
!
Robots.txt
Missing
Add robots.txt file to control search engine crawling.
!
Sitemap
Not found
Add sitemap.xml and reference it in robots.txt.
✓
HTTPS
Yes
Secure HTTPS connection enabled.
✓
Compression
gzip
Gzip or Zstd compression enabled for faster loading.
!
Caching
Not set
Add cache-control headers to improve loading speed for returning visitors.
✓
Page Speed
10.36 ms
Excellent loading speed.
On-Page SEO
!
Title
Comet OJ"|常规赛题目难度说明
Title too short. Expand to 30-60 characters for better SEO.
✓
Meta Description
comet OJ(www.zhixincode.com)高质量 ACM/OI 比赛,原创 ACM/OI 比赛,ACM/OI 比赛解析,ACM/OI 比赛直播题解,最新 ACM 算法题,经典算法题,CCPC-Wannafly Winter Camp,Wannafly Winter Camp，质心教育信息学竞赛 Lenght:154
Good meta description length (100-160 characters).
!
H1 Heading
0 found - ""
Add exactly one H1 heading with primary keywords.
!
Word Count
88
Content very short. Aim for at least 500 words for better SEO.
!
Canonical Tag
Add canonical tag to prevent duplicate content issues.
✓
Duplicate Meta
[]
No duplicate meta tags found.
✓
Keywords
Meta keywords are optional (not used by major search engines).
Content and UX
!
Language
Add lang attribute to tag for accessibility and SEO.
!
Images
4 total, 3 missing ALT
Add ALT text to images for accessibility and SEO.
✓
Viewport
width=device-width, initial-scale=1.0, user-scalable=no
Viewport meta tag properly set for mobile devices.
!
Open Graph
Missing: og:title, og:description, og:image, og:url
Add missing OpenGraph tags for social media sharing: og:title, og:description, og:image, og:url
!
Structured Data
0 JSON-LD scripts
Add structured data (JSON-LD) for rich snippets and better SEO.