sfn.cn is not available!

  • Website up
  • Not on blocklists
Registrar
北京国科云计算技术有限公司（原北京中科三方网络技术有限公司）
Registered on
Expires on
Name servers
  • ns1.sfn.cn
  • ns2.sfn.cn
Status
  • clientDeleteProhibited
  • clientUpdateProhibited
  • clientTransferProhibited
DNSSEC
Not signed
Checked
Visit sfn.cn

Website

Answer
200 OKin 1,893 ms
Ends at
https://www.guokeyun.com/
Redirects
  • https://sfn.cn/ (301)
Title
国科云-国科控股旗下域名管理专家-域名注册商-域名解析-DNS解析-云解析-IPv6改造
Server
nginx
Protocols
HTTP/1.1
Certificate
China Financial Certification Authority (CFCA EV OCA) for www.guokeyun.com, guokeyun.com, www.sfn.cn and sfn.cn, valid until
www
Redirects to https://www.guokeyun.com/ (301)

DNS records

sfn.cn

A
TTL 10 min
AAAA
TTL 10 min
MX
  • 6mail.sfn.cn
TTL 1 day
NS
  • ns1.sfn.cn
  • ns2.sfn.cn
TTL 1 day
TXT
  • 118r7j35mlyns2sywdmvghfyfndmrfyl
  • google-site-verification=tuID6n28tUg-VVKqsOqe6EtOYfV-istMBCdbi5_xJ5s
  • v=spf1 include:spf.icoremail.net ~all
TTL 10 min
SOA
  • Primary server
    ns1.sfn.cn
    Contact
    [email protected]
    Serial
    2026102822
    Refresh
    10 min
    Retry
    2 min
    Expire
    7 days
    Negative TTL
    2 hours
TTL 1 day
CAA
None: any certificate authority may issue for this name

www.sfn.cn

A
TTL 10 min
AAAA
TTL 10 min

As 111.63.77.29 answers them

Reputation

Domain blocklists

  • Spamhaus DBL Not listed
  • SURBL Not listed
  • URIBL Not listed

Rankings

35,794 Tranco rank down from 29,444 on 2026-09-21
0.50Open PageRank, out of 10
131,571Open PageRank position
11Referring domains

From Tranco and Open PageRank

WHOIS

Domain Name: sfn.cn
ROID: 20030311s10001s00038525-cn
Domain Status: clientDeleteProhibited
Domain Status: clientUpdateProhibited
Domain Status: clientTransferProhibited
Registrant: 北京国科云计算技术有限公司
Registrant Contact Email: [email protected]
Sponsoring Registrar: 北京国科云计算技术有限公司（原北京中科三方网络技术有限公司）
Name Server: ns1.sfn.cn
Name Server: ns2.sfn.cn
Registration Time: 2003-03-17 12:20:05
Expiration Time: 2035-03-17 12:48:36
DNSSEC: unsigned

DNSSEC

sfn.cn is not signed.

. Verified

  • Found 3 DNSKEY records for .
  • DS=20326/SHA-256 verifies DNSKEY=20326/SEP
  • DS=38696/SHA-256 verifies DNSKEY=38696/SEP
  • Found 1 RRSIGs over DNSKEY RRset
  • RRSIG=38696 and DNSKEY=38696/SEP verifies the DNSKEY RRset

cn Verified

  • Found 1 DS records for cn in the . zone
  • DS=33094/SHA-256 has algorithm RSASHA256
  • Found 1 RRSIGs over DS RRset
  • RRSIG=8763 and DNSKEY=8763 verifies the DS RRset
  • Found 2 DNSKEY records for cn
  • DS=33094/SHA-256 verifies DNSKEY=33094/SEP
  • Found 2 RRSIGs over DNSKEY RRset
  • RRSIG=27768 over the DNSKEY RRset was made with a key that is not trusted here
  • RRSIG=33094 and DNSKEY=33094/SEP verifies the DNSKEY RRset

sfn.cn Not signed

  • No DS records found for sfn.cn in the cn zone