atcoder.jp
AtCoder

!Нет тега H1

AtCoder is a programming contest site for anyone from beginners to experts. We hold weekly programming contests online.

Ключевые слова не указаны

Технический рейтинг

Отсутвует защита от XSS атак. HTTP заголовок "X-XSS-Protection" не найден

Нет защиты от некоторых видов атак. HTTP заголовок "X-Frame-Options" не найден

HTTP отвечает кодом - 200

HTTPS отвечает кодом - 200

Есть перенаправление с HTTP на HTTPS

iHTTP перенаправляет на: https://atcoder.jp:443/

!Время ответа сервера 2,183 сек

Время загрузки HTML страницы 1,177 сек

iРазмер HTML кода: 28783

Ссылка на favicon присутствует

iКоличество IMGs: 23

!Атрибут ALT не установлен для всех IMGs

Адаптирован для мобильных устройств. Есть тег VIEWPORT

!W3C валидация. Количество ошибок HTML и CSS: 38

W3C валидация. Количество предупреждений: 3

Использует robots.txt

!Не использует sitemap

Есть и DNS MX запись, и антиспам записи DMARC и ADSP

Географическое положение сайта Atcoder.jp

iUS Seattle 410 Terry Ave N.

Amazon.com Invictus, 410, Terry Avenue North, South Lake Union, Belltown, Seattle, King County, Washington, 98109-5210, United States

Техническая информация

iСервер: nginx

iIP версии 4: 52.199.250.173, 54.250.110.78

iDNS TXT запись: "pardot884953=58ccd91e72a6f94be7450fef89ee32f712f9e18afb5273954e7d09781c220ec1"
"v=spf1 a:atcoder.jp a:api.atcoder.jp +ip4:183.177.145.0/28 include:_spf.google.com include:aspmx.pardot.com ?all"

iDNS MX почтовая запись: 10 aspmx.l.google.com., 20 alt1.aspmx.l.google.com., 20 alt2.aspmx.l.google.com., 30 aspmx2.googlemail.com., 30 aspmx3.googlemail.com., 30 aspmx4.googlemail.com., 30 aspmx5.googlemail.com.

iDMARC почтовая антиспам запись: 52.199.250.173, 54.250.110.78

iADSP почтовая запись: 54.250.110.78, 52.199.250.173

iПолная информация из Whois

[Querying whois.jprs.jp]
[whois.jprs.jp]
[ 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:
[Domain Name]                   ATCODER.JP

[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]

[Created on]                    2014/11/15
[Expires on]                    2021/11/30
[Status]                        Active
[Last Updated]                  2020/12/01 01:05:08 (JST)

Contact Information:
[Name]                          Whois Privacy Protection Service by VALUE-DOMAIN
[Email]                         [email protected]
[Web Page]                      https://www.value-domain.com/
[Postal code]                   530-0011
[Postal Address]
[Phone]                         06-7634-2727
[Fax]                           06-6374-0121

iПолная информация об IP 52.199.250.173

[Querying whois.arin.net]
[whois.arin.net]

#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/resources/registry/whois/tou/
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/registry/whois/inaccuracy_reporting/
#
# Copyright 1997-2021, American Registry for Internet Numbers, Ltd.
#



# start

NetRange:       52.192.0.0 - 52.223.191.255
CIDR:           52.223.0.0/17, 52.223.128.0/18, 52.208.0.0/13, 52.192.0.0/12, 52.216.0.0/14, 52.220.0.0/15, 52.222.0.0/16
NetName:        AT-88-Z
NetHandle:      NET-52-192-0-0-1
Parent:         NET52 (NET-52-0-0-0-0)
NetType:        Direct Allocation
OriginAS:
Organization:   Amazon Technologies Inc. (AT-88-Z)
RegDate:        2015-09-02
Updated:        2020-09-24
Ref:            https://rdap.arin.net/registry/ip/52.192.0.0



OrgName:        Amazon Technologies Inc.
OrgId:          AT-88-Z
Address:        410 Terry Ave N.
City:           Seattle
StateProv:      WA
PostalCode:     98109
Country:        US
RegDate:        2011-12-08
Updated:        2021-07-28
Comment:        All abuse reports MUST include:
Comment:        * src IP
Comment:        * dest IP (your IP)
Comment:        * dest port
Comment:        * Accurate date/timestamp and timezone of activity
Comment:        * Intensity/frequency (short log extracts)
Comment:        * Your contact details (phone and email) Without these we will be unable to identify the correct owner of the IP address at that point in time.
Ref:            https://rdap.arin.net/registry/entity/AT-88-Z


OrgAbuseHandle: AEA8-ARIN
OrgAbuseName:   Amazon EC2 Abuse
OrgAbusePhone:  +1-206-266-4064
OrgAbuseEmail:  [email protected]
OrgAbuseRef:    https://rdap.arin.net/registry/entity/AEA8-ARIN

OrgRoutingHandle: IPROU3-ARIN
OrgRoutingName:   IP Routing
OrgRoutingPhone:  +1-206-266-4064
OrgRoutingEmail:  [email protected]
OrgRoutingRef:    https://rdap.arin.net/registry/entity/IPROU3-ARIN

OrgTechHandle: ANO24-ARIN
OrgTechName:   Amazon EC2 Network Operations
OrgTechPhone:  +1-206-266-4064
OrgTechEmail:  [email protected]
OrgTechRef:    https://rdap.arin.net/registry/entity/ANO24-ARIN

OrgNOCHandle: AANO1-ARIN
OrgNOCName:   Amazon AWS Network Operations
OrgNOCPhone:  +1-206-266-4064
OrgNOCEmail:  [email protected]
OrgNOCRef:    https://rdap.arin.net/registry/entity/AANO1-ARIN

OrgRoutingHandle: ARMP-ARIN
OrgRoutingName:   AWS RPKI Management POC
OrgRoutingPhone:  +1-206-266-4064
OrgRoutingEmail:  [email protected]
OrgRoutingRef:    https://rdap.arin.net/registry/entity/ARMP-ARIN

# end


# start

NetRange:       52.196.0.0 - 52.199.255.255
CIDR:           52.196.0.0/14
NetName:        AMAZON-NRT
NetHandle:      NET-52-196-0-0-1
Parent:         AT-88-Z (NET-52-192-0-0-1)
NetType:        Reallocated
OriginAS:       AS16509
Organization:   Amazon Data Services Japan (AMAZO-49)
RegDate:        2015-12-10
Updated:        2015-12-10
Ref:            https://rdap.arin.net/registry/ip/52.196.0.0


OrgName:        Amazon Data Services Japan
OrgId:          AMAZO-49
Address:        11F Shibuya Cross Tower
Address:        2-15-1, Shibuya-ku Shibuya
City:           Tokyo
StateProv:
PostalCode:     150-0002
Country:        JP
RegDate:        2012-08-01
Updated:        2014-07-01
Comment:        The activity you have detected originates from a dynamic hosting environment.
Comment:        For fastest response, please submit abuse reports at http://aws-portal.amazon.com/gp/aws/html-forms-controller/contactus/AWSAbuse
Comment:        For more information regarding EC2 see:
Comment:        http://ec2.amazonaws.com/
Comment:        All reports MUST include:
Comment:        * src IP
Comment:        * dest IP (your IP)
Comment:        * dest port
Comment:        * Accurate date/timestamp and timezone of activity
Comment:        * Intensity/frequency (short log extracts)
Comment:        * Your contact details (phone and email) Without these we will be unable to identify the correct owner of the IP address at that point in time.
Ref:            https://rdap.arin.net/registry/entity/AMAZO-49


OrgNOCHandle: AANO1-ARIN
OrgNOCName:   Amazon AWS Network Operations
OrgNOCPhone:  +1-206-266-4064
OrgNOCEmail:  [email protected]
OrgNOCRef:    https://rdap.arin.net/registry/entity/AANO1-ARIN

OrgAbuseHandle: AEA8-ARIN
OrgAbuseName:   Amazon EC2 Abuse
OrgAbusePhone:  +1-206-266-4064
OrgAbuseEmail:  [email protected]
OrgAbuseRef:    https://rdap.arin.net/registry/entity/AEA8-ARIN

OrgTechHandle: ANO24-ARIN
OrgTechName:   Amazon EC2 Network Operations
OrgTechPhone:  +1-206-266-4064
OrgTechEmail:  [email protected]
OrgTechRef:    https://rdap.arin.net/registry/entity/ANO24-ARIN

# end



#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/resources/registry/whois/tou/
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/registry/whois/inaccuracy_reporting/
#
# Copyright 1997-2021, American Registry for Internet Numbers, Ltd.
#

iПолная информация о DNS

A: 52.199.250.173
A: 54.250.110.78

TXT: "pardot884953=58ccd91e72a6f94be7450fef89ee32f712f9e18afb5273954e7d09781c220ec1"
TXT: "v=spf1 a:atcoder.jp a:api.atcoder.jp +ip4:183.177.145.0/28 include:_spf.google.com include:aspmx.pardot.com ?all"

MX: 10 aspmx.l.google.com.
MX: 20 alt1.aspmx.l.google.com.
MX: 20 alt2.aspmx.l.google.com.
MX: 30 aspmx2.googlemail.com.
MX: 30 aspmx3.googlemail.com.
MX: 30 aspmx4.googlemail.com.
MX: 30 aspmx5.googlemail.com.

DMARC: 52.199.250.173
DMARC: 54.250.110.78

ADSP: 54.250.110.78
ADSP: 52.199.250.173