usaco.org网站历史

usaco.org历史解析记录：

• 104.21.78.228 2024-02-20 --- 2026-06-29
• 172.67.137.226 2024-02-20 --- 2026-06-29
• 130.127.204.224 2020-05-14 --- 2024-02-20
• 130.127.215.7 2019-07-21 --- 2020-01-19

usaco.org备案信息:

usaco.orgWhois域名信息:

[Querying whois.pir.org]

[whois.pir.org]

Domain Name: usaco.org

Registry Domain ID: REDACTED

Registrar WHOIS Server: whois.register.com

Registrar URL: http://www.register.com

Updated Date: 2025-08-24T11:02:08Z

Creation Date: 1996-09-05T04:00:00Z

Registry Expiry Date: 2029-09-04T04:00:00Z

Registrar: Register.com - Network Solutions, LLC

Registrar IANA ID: 9

Registrar Abuse Contact Email: domain.operations@web.com

Registrar Abuse Contact Phone: +1.8777228662

Domain Status: clientTransferProhibited https://icann.org/epp#clientTransferProhibited

Name Server: andronicus.ns.cloudflare.com

Name Server: aurora.ns.cloudflare.com

DNSSEC: unsigned

URL of the ICANN Whois Inaccuracy Complaint Form: https://icann.org/wicf/

>>> Last update of WHOIS database: 2026-01-22T01:31:19Z <<<

以上信息更新时间：2026-01-22

usaco.org子域名:

• www.usaco.org
• contest.usaco.org
• usaco.org
• train.usaco.org