zytdysyxgs.com

Checked 22 October 2026, 11:44 UTC · via 8.8.8.8
✗Problems found
21 passed 3 warnings 2 failed 5 info

Registration

info

.com generic · Hefei Juming Network Technology Co., Ltd · expires 2026-12-17

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
Hefei Juming Network Technology Co., Ltd
Registered
17 December 2020
Last changed
3 November 2025
Expires
17 December 2026
Status
client transfer prohibited
Registry nameservers
ns5.diymysite.com, ns6.diymysite.com
RDAP server
https://rdap.verisign.com/com/v1/

Checks

  • i
    .com is a generic TLD (gTLD)
    Generic TLD under an ICANN registry agreement: ICANN-accredited registrars, UDRP and RDAP apply.
    #1
  • ✓ TLD delegated and signed #2
    .com is delegated in the root zone and DNSSEC-signed.
  • ✓ Expires on 2026-12-17 #3
    The registration is valid until 2026-12-17 (55 days).
  • ✓ Transfer locked #4
    Registry status: client transfer prohibited.
  • ✓ Registry and delegation match #5
    The nameservers registered at the registry are the ones published in DNS.

Delegation

info

ns5.diymysite.com, ns6.diymysite.com

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
ns5.diymysite.com, ns6.diymysite.com
NS in the zone
ns5.diymysite.com, ns6.diymysite.com
NameserverAddressesNetwork (AS)Glue
ns5.diymysite.com61.172.183.73 118.123.249.114 240e:d9:c200::2AS4811 CHINANET-SHANGHAI-MAN - China Telecom (Group), CN AS38283 CHINANET-SCIDC-AS-AP - CHINANET SiChuan Telecom Internet Data Center, CN AS38283 CHINANET-SCIDC-AS-AP - CHINANET SiChuan Telecom Internet Data Center, CN118.123.249.114 240e:d9:c200::2 61.172.183.73
ns6.diymysite.com118.123.253.132 60.247.150.13 240e:d9:c200:1::2AS38283 CHINANET-SCIDC-AS-AP - CHINANET SiChuan Telecom Internet Data Center, CN AS38283 CHINANET-SCIDC-AS-AP - CHINANET SiChuan Telecom Internet Data Center, CN AS38283 CHINANET-SCIDC-AS-AP - CHINANET SiChuan Telecom Internet Data Center, CN118.123.253.132 240e:d9:c200:1::2 60.247.150.13

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: ns5.diymysite.com, ns6.diymysite.com.
    #6
  • ✓ Parent and zone agree #7
    The parent delegation and the zone's NS records list the same nameservers.
  • ✓ No glue needed #8
    All nameservers are outside the zone, so no glue records are needed.
  • ✓ All names resolve #9
    Every nameserver name has an address and is not an alias.
  • i
    One address family in one network
    all IPv6 addresses are in 240e:d9:c200::/48, while the other address family is spread over several networks.
    #10
  • ✓ 2 autonomous systems #11
    The nameservers are spread over: AS38283 (CHINANET-SCIDC-AS-AP - CHINANET SiChuan Telecom Internet Data Center, CN): 5 addresses; AS4811 (CHINANET-SHANGHAI-MAN - China Telecom (Group), CN): 1 address.
  • i
    All nameserver names under .com
    All nameserver names are under one TLD, so a problem with that TLD also makes the nameservers unreachable. Some operators use names under two TLDs for extra resilience.
    #12
  • ✓ All reachable over IPv6 #13
    Every nameserver has an IPv6 address.

Nameservers

fail

6 of 6 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns5.diymysite.com 61.172.183.73NOERROR, 212 ms, authoritativenono / norefused-
ns5.diymysite.com 118.123.249.114NOERROR, 217 ms, authoritativenono / yesrefusedv1.1
ns5.diymysite.com 240e:d9:c200::2NOERROR, 226 ms, authoritativenono / yesrefusedv1.1
ns6.diymysite.com 118.123.253.132NOERROR, 228 ms, authoritativenoyes / yesrefusedv1.1
ns6.diymysite.com 60.247.150.13NOERROR, 218 ms, authoritativenoyes / yesrefusedv1.1
ns6.diymysite.com 240e:d9:c200:1::2NOERROR, 228 ms, authoritativenono / yesrefusedv1.1

Checks

  • ✓ All respond #14
    All 6 nameserver addresses answered.
  • ✓ All authoritative #15
    Every responding nameserver answers authoritatively for the zone.
  • ✓ No recursion #16
    The nameservers do not answer recursive queries for other domains.
  • !
    Software version disclosed
    These nameservers report their software version via version.bind/version.server, which helps attackers find known vulnerabilities: ns5.diymysite.com: "v1.1"; ns6.diymysite.com: "v1.1". Hide or replace the version string.
    #17
  • ✓ Zone transfers refused #18
    No nameserver allows a zone transfer to the public.
  • ✗
    No DNS over TCP
    DNS over TCP is required (RFC 7766); without it, large answers such as DNSSEC responses fail. Not answering over TCP: ns5.diymysite.com (61.172.183.73): dial tcp 61.172.183.73:53: i/o timeout; ns5.diymysite.com (118.123.249.114): dial tcp 118.123.249.114:53: i/o timeout; ns5.diymysite.com (240e:d9:c200::2): dial tcp [240e:d9:c200::2]:53: i/o timeout; ns6.diymysite.com (240e:d9:c200:1::2): dial tcp [240e:d9:c200:1::2]:53: i/o timeout.
    #19
  • !
    No EDNS
    These nameservers don't support EDNS(0), needed for DNSSEC and answers larger than 512 bytes: ns5.diymysite.com (61.172.183.73).
    #20
  • ✓ Public addresses #21
    All nameserver addresses are publicly routable.

SOA

pass

serial 2024081701 · primary ns5.diymysite.com

Found

Primary (MNAME)
ns5.diymysite.com
Contact (RNAME)
dnsconct.myhostadmin.net
Serial
2024081701
Refresh / retry
3600 s / 300 s
Expire
1209600 s
Negative TTL
3600 s

Serial per nameserver

NameserverSerial
ns5.diymysite.com (61.172.183.73)2024081701
ns5.diymysite.com (118.123.249.114)2024081701
ns5.diymysite.com (240e:d9:c200::2)2024081701
ns6.diymysite.com (118.123.253.132)2024081701
ns6.diymysite.com (60.247.150.13)2024081701
ns6.diymysite.com (240e:d9:c200:1::2)2024081701

Checks

  • ✓ Serial 2024081701 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 1h, retry 5m, expire 14d, negative TTL 1h.
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns5.diymysite.com is one of the listed nameservers.
  • ✓ Contact dnsconct@myhostadmin.net #25
    The SOA RNAME dnsconct.myhostadmin.net means dnsconct@myhostadmin.net.
  • ✓ Date-based serial #26
    The serial 2024081701 follows the YYYYMMDDnn convention (2024-08-17).

DNSSEC

warn

Not signed

Found

Validated by resolver
no

Checks

  • !
    Not signed
    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

Records

fail

3 records at the apex

Found

Read from
61.172.183.73:53
TypeValueTTL
SOANS5.DIYMYSITE.COM. dnsconct.myhostadmin.net. 2024081701 3600 300 1209600 36003600
NSNS6.DIYMYSITE.COM.3600
NSNS5.DIYMYSITE.COM.3600

Checks

  • ✓ TTLs within range #32
    TTLs: NS 1h. The NS TTL at the parent is 2d and in the zone 1h; resolvers may use either.
  • ✗
    CNAME at the apex
    The zone apex is a CNAME to zytdysyxgs.gotoip2.com. A CNAME can't coexist with the SOA and NS records (RFC 1034); use your provider's ALIAS/flattening feature instead.
    #33
  • ✓ No wildcard #34
    Names that don't exist return NXDOMAIN.
  • i
    No CAA records
    Without CAA records any certificate authority may issue certificates for this domain. A CAA record limits issuance to the CAs you use.
    #35