shen147.com

Checked 22 October 2026, 10:41 UTC · via 8.8.8.8
!Passed with warnings
22 passed 5 warnings 0 failed 4 info

Registration

info

.com generic · Gname.com Pte. Ltd. · expires 2027-07-31

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
Gname.com Pte. Ltd.
Registered
31 July 2021
Last changed
10 September 2026
Expires
31 July 2027
Status
client transfer prohibited
Registry nameservers
a12.share-dns.com, b12.share-dns.net
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 2027-07-31 #3
    The registration is valid until 2027-07-31 (281 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

warn

a12.share-dns.com, b12.share-dns.net

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
a12.share-dns.com, b12.share-dns.net
NS in the zone
a.share-dns.com, b.share-dns.net
NameserverAddressesNetwork (AS)Glue
a.share-dns.com (zone only)172.64.53.25AS13335 CLOUDFLARENET - Cloudflare, Inc., US-
a12.share-dns.com (parent only)172.64.53.25AS13335 CLOUDFLARENET - Cloudflare, Inc., US172.64.53.25
b.share-dns.net (zone only)162.159.27.88AS13335 CLOUDFLARENET - Cloudflare, Inc., US-
b12.share-dns.net (parent only)162.159.27.88AS13335 CLOUDFLARENET - Cloudflare, Inc., US-

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: a12.share-dns.com, b12.share-dns.net.
    #6
  • !
    NS sets differ
    The nameservers at the parent and in the zone should be the same. Only at the parent: a12.share-dns.com, b12.share-dns.net; only in the zone: a.share-dns.com, b.share-dns.net. a.share-dns.com, a12.share-dns.com, b.share-dns.net, b12.share-dns.net report NS a.share-dns.com b.share-dns.net.
    #7
  • ✓ 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.
  • ✓ Nameservers in different networks #10
    The nameservers are spread over 2 IPv4 /24s and 0 IPv6 /48s.
  • i
    All nameservers in one AS
    All nameserver addresses are announced by one network operator (AS13335 (CLOUDFLARENET - Cloudflare, Inc., US): 4 addresses). An outage or attack on that network affects all nameservers; large anycast providers mitigate this, but a secondary DNS provider adds independence.
    #11
  • ✓ Nameserver names under 2 TLDs #12
    Nameserver names use the TLDs .com, .net.
  • !
    No IPv6
    None of the nameservers has an IPv6 address, so IPv6-only resolvers can't reach them.
    #13

Nameservers

warn

4 of 4 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
a.share-dns.com 172.64.53.25NOERROR, 64 ms, authoritativenoyes / yesrefused2026.10.8
a12.share-dns.com 172.64.53.25NOERROR, 61 ms, authoritativenoyes / yesrefused2026.10.8
b.share-dns.net 162.159.27.88NOERROR, 11 ms, authoritativenoyes / yesrefused2026.10.8
b12.share-dns.net 162.159.27.88NOERROR, 11 ms, authoritativenoyes / yesrefused2026.10.8

Checks

  • ✓ All respond #14
    All 4 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: a.share-dns.com: "2026.10.8"; a12.share-dns.com: "2026.10.8"; b.share-dns.net: "2026.10.8"; b12.share-dns.net: "2026.10.8". Hide or replace the version string.
    #17
  • ✓ Zone transfers refused #18
    No nameserver allows a zone transfer to the public.
  • ✓ TCP supported #19
    All nameservers answer over TCP.
  • ✓ EDNS supported #20
    All nameservers support EDNS(0).
  • ✓ Public addresses #21
    All nameserver addresses are publicly routable.

SOA

warn

serial 1790049002 · primary a.share-dns.com

Found

Primary (MNAME)
a.share-dns.com
Contact (RNAME)
master.share-dns.com
Serial
1790049002
Refresh / retry
3600 s / 1200 s
Expire
86400 s
Negative TTL
600 s

Serial per nameserver

NameserverSerial
a.share-dns.com (172.64.53.25)1790049002
a12.share-dns.com (172.64.53.25)1790049002
b.share-dns.net (162.159.27.88)1790049002
b12.share-dns.net (162.159.27.88)1790049002

Checks

  • ✓ Serial 1790049002 everywhere #22
    All nameservers serve the same version of the zone.
  • !
    Unusual SOA timers
    expire 1d is shorter than 7d; secondaries stop answering too soon when the primary is down. Current values: refresh 1h, retry 20m, expire 1d, negative TTL 10m.
    #23
  • ✓ Primary is a public nameserver #24
    The primary nameserver a.share-dns.com is one of the listed nameservers.
  • ✓ Contact master@share-dns.com #25
    The SOA RNAME master.share-dns.com means master@share-dns.com.
  • ✓ Timestamp serial #26
    The serial 1790049002 is a Unix timestamp (2026-09-22 03:50 UTC).

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

info

4 records at the apex

Found

Read from
172.64.53.25:53
TypeValueTTL
SOAa.share-dns.com. master.share-dns.com. 1790049002 3600 1200 86400 600600
NSa.share-dns.com.86400
NSb.share-dns.net.86400
A191.124.0.14600

Checks

  • ✓ TTLs within range #32
    TTLs: A 10m, NS 1d. The NS TTL at the parent is 2d and in the zone 1d; resolvers may use either.
  • ✓ No CNAME at the apex #33
    The zone apex has no CNAME record.
  • ✓ 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