SurfaceMap › s › shanghufang.com

shanghufang.com

Checked 2026-10-22 10:41 UTC · first added 2026-10-21
✗Problems found Score 45 of 100

Domain & DNS

fail

22 passed 3 warn 1 failed

Areas

iRegistration iDelegation ✗Nameservers !SOA !DNSSEC !Records

Problems

  • ✗
    No DNS over TCP
    Nameservers · DNS over TCP is required (RFC 7766); without it, large answers such as DNSSEC responses fail. Not answering over TCP: ns1.bdydns.cn (180.97.36.63): dial tcp 180.97.36.63:53: i/o timeout; ns1.bdydns.cn (183.232.231.249): dial tcp 183.232.231.249:53: i/o timeout; ns1.bdydns.cn (240e:940:603:3:0:ff:b05b:137e): dial tcp [240e:940:603:3:0:ff:b05b:137e]:53: i/o timeout; ns2.bdydns.cn (14.215.177.154): dial tcp 14.215.177.154:53: i/o timeout; ns2.bdydns.cn (119.75.222.53): dial tcp 119.75.222.53:53: i/o timeout; ns2.bdydns.cn (112.80.248.202): dial tcp 112.80.248.202:53: i/o timeout; ns2.bdydns.cn (240e:940:603:5:0:ff:b0cf:479b): dial tcp [240e:940:603:5:0:ff:b0cf:479b]:53: i/o timeout.
    #19
  • !
    Unusual SOA timers
    SOA · negative caching TTL (minimum) 2m is outside 5m–1d (RFC 2308 recommends 1–3 hours). Current values: refresh 1h, retry 5m, expire 30d, negative TTL 2m.
    #23
  • !
    Not signed
    DNSSEC · The zone is not signed with DNSSEC, so answers can be spoofed. Enable DNSSEC at your DNS provider and publish the DS record at your registrar.
    #27
  • !
    Very low TTLs
    Records · These records have a TTL below 5m, causing extra queries and slower lookups: A (1m). Low TTLs are useful just before a planned change. The NS TTL at the parent is 2d and in the zone 1d; resolvers may use either.
    #32

Recent checks

✗

Full report

Domain & DNS report for shanghufang.com ›

Mail

fail

0 passed 2 warn 3 failed

Areas

✗SPF ✗DMARC ✗DKIM !DNSSEC !MX iBIMI

Problems

  • ✗
    No DMARC record
    DMARC · No DMARC record was found for this domain. DMARC is essential for preventing email spoofing. Add a DMARC record with p=reject or at least p=quarantine.
    #5
  • ✗
    No SPF record
    SPF · No SPF record was found for this domain. SPF is important for preventing email spoofing. Add an SPF record to specify which servers are authorized to send email for your domain.
    #6
  • ✗
    No DKIM keys published
    DKIM · _domainkey.shanghufang.com does not exist (NXDOMAIN), so no DKIM keys are published. DKIM helps prevent email spoofing. Configure DKIM with your email service provider.
    #7
  • !
    Not enabled
    DNSSEC · DNSSEC is not enabled for this domain. Consider enabling DNSSEC to protect against DNS spoofing attacks.
    #8
  • !
    No MX records
    MX · No MX records found. If this domain is used for email, add MX records to specify mail servers. If it never receives mail, publish a null MX ("MX 0 .").
    #9

Recent checks

✗

Full report

Mail report for shanghufang.com ›