Atcoder.jp AtCoder
AtCoder is a programming contest site for anyone from beginners to experts. We hold weekly programming contests online.
Server IP address resolved: Yes
Http response code: 200
Response time: 0.18 sec.
Last Checked: 11/05/2024
Atcoder.jp traffic volume is 474 unique daily visitors and their 6,636 pageviews. The web value rate of atcoder.jp is 112,478 USD. Each visitor makes around 14.98 page views on average.
By Alexa's traffic estimates atcoder.jp placed at 86,444 position over the world, while the largest amount of its visitors comes from Japan, where it takes 6,360 place.
Perfect for atcoder.jp that their data center (provided by company company AMAZON-02 - Amazon.com, Inc., US) is located in Japan, as that empowers most of the visitors to reduce the page load time. See the list of other web pages hosted by AMAZON-02 - Amazon.com, Inc., US.
Atcoder.jp registered under .JP top-level domain. Check other websites in .JP zone.
The last verification results, performed on (October 11, 2024) atcoder.jp show that atcoder.jp has a valid and up-to-date SSL certificate issued by Amazon expiring on June 29, 2025. Click “Refresh” button for SSL Information at the Safety Information section. Check the list of websites using SSL certificates issued by Amazon.
In accordance with Google Safe Browsing, Google Safe Search and Symantec atcoder.jp is pretty a safe domain.
Relying Google MobileFriendly test atcoder.jp is well optimized for mobile and tablet devices.
Audience Geography. Where are atcoder.jp visitors located?
| Country | Visitors |
|---|---|
 Japan JP | 80.7% |
| India IN | 9.4% |
| Egypt EG | 0.8% |
| Bangladesh BD | 0.5% |
| Nepal NP | 0.5% |
| Other | 8.2% |
| Country | Pageviews |
|---|---|
| Japan JP | 91.5% |
| India IN | 4.9% |
| Egypt EG | 0.3% |
| Nepal NP | 0.3% |
| Bangladesh BD | 0.2% |
| Other | 2.8% |
| Country | Rank |
|---|---|
| Nepal NP | 5609 |
| Japan JP | 6360 |
| Bangladesh BD | 29725 |
| India IN | 39223 |
| Egypt EG | 43655 |
Where do visitors go on atcoder.jp?
| Subdomain | Pageviews |
|---|---|
| beta.atcoder.jp | 38.45% |
| contest.atcoder.jp | 33.51% |
| atcoder.jp | 26.31% |
| img.atcoder.jp | 1.14% |
| other | 0.59% |
| Subdomain | Pageviews per User |
|---|---|
| contest.atcoder.jp | 15 |
| beta.atcoder.jp | 12 |
| atcoder.jp | 7.2 |
| img.atcoder.jp | 1 |
| Subdomain | Reach |
|---|---|
| atcoder.jp | 57.48% |
| beta.atcoder.jp | 49.34% |
| contest.atcoder.jp | 33.89% |
| img.atcoder.jp | 17.49% |
How popular is atcoder.jp?
| Period | Global Rank | Global Rank Delta |
|---|---|---|
| past 3 months | 90449 | -5158 |
| past month | 70008 | -75947 |
| past week | 83828 | 29570 |
| yesterday | 107628 | -781811 |
| Days | Pageviews Rank | Pageviews Rank Delta | Pageviews per Million | Pageviews per Million Delta | Pageviews per User | Pageviews per User Delta |
|---|---|---|---|---|---|---|
| 90 | 35158 | -7242 | 19 | 26% | 14 | 20% |
| 30 | 25018 | -69536 | 28 | 360% | 16 | 100% |
| 7 | 22773 | -3285 | 32 | 10% | 20 | 100% |
| 1 | 140314 | -395383 | 4 | 800% | 2 | -72.846% |
| Days | Reach Rank | Reach Rank Delta | Reach per Million | Reach per Million Delta |
|---|---|---|---|---|
| 90 | 128714 | -3337 | 5 | 5% |
| 30 | 103592 | -79475 | 65 | 100% |
| 7 | 130944 | 56216 | 5 | -50.09% |
| 1 | 111304 | -882468 | 7 | 3000% |
We gather website safety and reputation data and compare it with available third-party sources so we calculate own safety and trustworthiness rate based on information that we get.
Norton ConnectSafe evaluates atcoder.jp for any unsafe and insecure content. The results are critical for families with young children.
SafeSearch is used as a parental control tool to filter out any inappropriate for your children search results on your devices: phones, tablets or personal computers.
Malware: not found.
Phishing: not detected.
Unwanted software: not found.
Harmfull applications: not found.
Google Safe Browsing notifies when websites are compromised by malicious actors. These protections work across Google products and provide a safer online experience.
McAfee assesses atcoder.jp for a meaningful set of security threats. Featured dangers from annoying pop-ups to hidden Trojans, that can steal your identity, will be revealed. McAfee does not analyze atcoder.jp for mature or inappropriate content, only security checks are evaluated.
The WOT calculates reputation of the atcoder.jp. This reputation system receives ratings from users and information from third-party sources, assesses the atcoder.jp for safety features and confirms, whether atcoder.jp is suitable for children.
| Domain | atcoder.jp |
| Issuer Organization | Amazon |
| Issuer | Amazon RSA 2048 M03 |
| Algorithm | RSA-SHA256 |
| Valid form | 05/31/2024 |
| Expiration | 06/29/2025 |
| Signed | Certificate is not self signed |
| Additional Domains |
atcoder.jp |
ASN ID: 16509
ASN Title: AMAZON-02 - Amazon.com, Inc., US
Last Update: 07/31/2024
#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/whois_tou.html
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/whois_reporting/index.html
#
# Copyright 1997-2018, American Registry for Internet Numbers, Ltd.
#
ASNumber: 16509
ASName: AMAZON-02
ASHandle: AS16509
RegDate: 2000-05-03
Updated: 2012-03-02
Ref: https://rdap.arin.net/registry/autnum/16509
OrgName: Amazon.com, Inc.
OrgId: AMAZON-4
Address: 1918 8th Ave
City: SEATTLE
StateProv: WA
PostalCode: 98101-1244
Country: US
RegDate: 1995-01-23
Updated: 2017-01-28
Ref: https://rdap.arin.net/registry/entity/AMAZON-4
OrgAbuseHandle: AEA8-ARIN
OrgAbuseName: Amazon EC2 Abuse
OrgAbusePhone: +1-206-266-4064
OrgAbuseEmail: abuse@amazonaws.com
OrgAbuseRef: https://rdap.arin.net/registry/entity/AEA8-ARIN
OrgTechHandle: ANO24-ARIN
OrgTechName: Amazon EC2 Network Operations
OrgTechPhone: +1-206-266-4064
OrgTechEmail: amzn-noc-contact@amazon.com
OrgTechRef: https://rdap.arin.net/registry/entity/ANO24-ARIN
RTechHandle: AC6-ORG-ARIN
RTechName: Amazon-com Incorporated
RTechPhone: +1-206-266-2187
RTechEmail: ipmanagement@amazon.com
RTechRef: https://rdap.arin.net/registry/entity/AC6-ORG-ARIN
#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/whois_tou.html
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/whois_reporting/index.html
#
# Copyright 1997-2018, American Registry for Internet Numbers, Ltd.
#
[ 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]
[Domain Name] ATCODER.JP
[登録者名] AtCoder Inc.
[Registrant] AtCoder Inc.
[Name Server] ns-96.awsdns-12.com
[Name Server] ns-1144.awsdns-15.org
[Name Server] ns-890.awsdns-47.net
[Name Server] ns-1543.awsdns-00.co.uk
[Signing Key]
[登録年月日] 2014/11/15
[有効期限] 2024/11/30
[状態] Active
[最終更新] 2023/12/01 01:05:04 (JST)
Contact Information: [公開連絡窓口]
[名前] Whois情報公開代行サービス by バリュードメイン
[Name] Whois Privacy Protection Service by VALUE-DOMAIN
[Email] whoisproxy@value-domain.com
[Web Page] https://www.value-domain.com/
[郵便番号] 530-0011
[住所] 大阪府大阪市北区大深町3-1
グランフロント大阪 タワーB 23階
[Postal Address]
[電話番号] 06-6241-6585
[FAX番号] 06-6374-0121
| Host | A Record | TTL |
|---|---|---|
| atcoder.jp | 54.64.223.8 | 60 |
| atcoder.jp | 54.249.74.29 | 60 |
| Host | MX Record | Priority | TTL |
|---|---|---|---|
| atcoder.jp | aspmx.l.google.com | 10 | 300 |
| atcoder.jp | alt1.aspmx.l.google.com | 20 | 300 |
| atcoder.jp | alt2.aspmx.l.google.com | 20 | 300 |
| atcoder.jp | aspmx2.googlemail.com | 30 | 300 |
| atcoder.jp | aspmx3.googlemail.com | 30 | 300 |
| atcoder.jp | aspmx4.googlemail.com | 30 | 300 |
| atcoder.jp | aspmx5.googlemail.com | 30 | 300 |
| Host | NS Record | TTL |
|---|---|---|
| atcoder.jp | ns-1144.awsdns-15.org | 172800 |
| atcoder.jp | ns-1543.awsdns-00.co.uk | 172800 |
| atcoder.jp | ns-890.awsdns-47.net | 172800 |
| atcoder.jp | ns-96.awsdns-12.com | 172800 |
| Host | TXT Record | TTL |
|---|---|---|
| atcoder.jp | v=spf1 a:atcoder.jp a:api.atcoder.jp +ip4:183.177.145.0/28 include:_spf.google.com ?all | 300 |
ns-96.awsdns-12.com
TTL: 900
Email address: awsdns-hostmaster.amazon.com
Serial: 1
Refresh: 7200
Retry: 900
Expire: 1209600
Minimum: 86400
Last tested: 01/28/2019
| Total Resources | 46 |
| Number of Hosts | 9 |
| Static Resources | 28 |
| JavaScript Resources | 16 |
| CSS Resources | 4 |
Last tested: 01/28/2019
| Total Resources | 46 |
| Number of Hosts | 9 |
| Static Resources | 28 |
| JavaScript Resources | 16 |
| CSS Resources | 4 |
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