techxplore.com

Checked 22 October 2026, 11:00 UTC · via 8.8.8.8
!Passed with warnings
25 passed 1 warning 0 failed 5 info

Registration

info

.com generic · GoDaddy.com, LLC · expires 2028-09-24

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
GoDaddy.com, LLC
Registered
24 September 2004
Last changed
24 September 2026
Expires
24 September 2028
Status
client delete prohibited, client renew prohibited, client transfer prohibited, client update prohibited
Registry nameservers
gns1.cloudns.net, gns2.cloudns.net, gns3.cloudns.net, gns4.cloudns.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 2028-09-24 #3
    The registration is valid until 2028-09-24 (702 days).
  • ✓ Transfer locked #4
    Registry status: client delete prohibited, client renew prohibited, client transfer prohibited, client update prohibited.
  • ✓ Registry and delegation match #5
    The nameservers registered at the registry are the ones published in DNS.

Delegation

info

gns1.cloudns.net, gns2.cloudns.net, gns3.cloudns.net, gns4.cloudns.net

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
gns1.cloudns.net, gns2.cloudns.net, gns3.cloudns.net, gns4.cloudns.net
NS in the zone
gns1.cloudns.net, gns2.cloudns.net, gns3.cloudns.net, gns4.cloudns.net
NameserverAddressesNetwork (AS)Glue
gns1.cloudns.net185.136.96.122 2a06:fb00:1::1:122AS203391 CLOUDNSNET - Cloud DNS Ltd, BG AS203391 CLOUDNSNET - Cloud DNS Ltd, BG-
gns2.cloudns.net185.136.97.122 2a06:fb00:1::2:122AS203391 CLOUDNSNET - Cloud DNS Ltd, BG AS203391 CLOUDNSNET - Cloud DNS Ltd, BG-
gns3.cloudns.net185.136.98.122 2a06:fb00:1::3:122AS203391 CLOUDNSNET - Cloud DNS Ltd, BG AS203391 CLOUDNSNET - Cloud DNS Ltd, BG-
gns4.cloudns.net185.136.99.122 2a06:fb00:1::4:122AS203391 CLOUDNSNET - Cloud DNS Ltd, BG AS203391 CLOUDNSNET - Cloud DNS Ltd, BG-

Checks

  • ✓ 4 nameservers #6
    Delegated to gns1.cloudns.net, gns2.cloudns.net, gns3.cloudns.net, gns4.cloudns.net.
  • ✓ 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 2a06:fb00:1::/48, while the other address family is spread over several networks.
    #10
  • i
    All nameservers in one AS
    All nameserver addresses are announced by one network operator (AS203391 (CLOUDNSNET - Cloud DNS Ltd, BG): 8 addresses). An outage or attack on that network affects all nameservers; large anycast providers mitigate this, but a secondary DNS provider adds independence.
    #11
  • i
    All nameserver names under .net
    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

info

8 of 8 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
gns1.cloudns.net 185.136.96.122NOERROR, 6 ms, authoritativenoyes / yesrefusedde3-9
gns1.cloudns.net 2a06:fb00:1::1:122NOERROR, 6 ms, authoritativenoyes / yesrefusedde3-9
gns2.cloudns.net 185.136.97.122NOERROR, 5 ms, authoritativenoyes / yesrefusedde3-9
gns2.cloudns.net 2a06:fb00:1::2:122NOERROR, 5 ms, authoritativenoyes / yesrefusedde3-9
gns3.cloudns.net 185.136.98.122NOERROR, 3 ms, authoritativenoyes / yesrefusedde3-9
gns3.cloudns.net 2a06:fb00:1::3:122NOERROR, 5 ms, authoritativenoyes / yesrefusedde3-9
gns4.cloudns.net 185.136.99.122NOERROR, 4 ms, authoritativenoyes / yesrefusedde3-9
gns4.cloudns.net 2a06:fb00:1::4:122NOERROR, 7 ms, authoritativenoyes / yesrefusedde3-9

Checks

  • ✓ All respond #14
    All 8 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.
  • i
    Identifying string disclosed
    These nameservers answer version queries with a string that is not a version number: gns1.cloudns.net: "de3-9"; gns2.cloudns.net: "de3-9"; gns3.cloudns.net: "de3-9"; gns4.cloudns.net: "de3-9".
    #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

pass

serial 2026091310 · primary gns1.cloudns.net

Found

Primary (MNAME)
gns1.cloudns.net
Contact (RNAME)
support.cloudns.net
Serial
2026091310
Refresh / retry
7200 s / 1800 s
Expire
1209600 s
Negative TTL
3600 s

Serial per nameserver

NameserverSerial
gns1.cloudns.net (185.136.96.122)2026091310
gns1.cloudns.net (2a06:fb00:1::1:122)2026091310
gns2.cloudns.net (185.136.97.122)2026091310
gns2.cloudns.net (2a06:fb00:1::2:122)2026091310
gns3.cloudns.net (185.136.98.122)2026091310
gns3.cloudns.net (2a06:fb00:1::3:122)2026091310
gns4.cloudns.net (185.136.99.122)2026091310
gns4.cloudns.net (2a06:fb00:1::4:122)2026091310

Checks

  • ✓ Serial 2026091310 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 2h, retry 30m, expire 14d, negative TTL 1h.
  • ✓ Primary is a public nameserver #24
    The primary nameserver gns1.cloudns.net is one of the listed nameservers.
  • ✓ Contact support@cloudns.net #25
    The SOA RNAME support.cloudns.net means support@cloudns.net.
  • ✓ Date-based serial #26
    The serial 2026091310 follows the YYYYMMDDnn convention (2026-09-13).

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

pass

11 records at the apex

Found

Read from
185.136.96.122:53
TypeValueTTL
SOAgns1.cloudns.net. support.cloudns.net. 2026091310 7200 1800 1209600 36003600
NSgns2.cloudns.net.3600
NSgns1.cloudns.net.3600
NSgns4.cloudns.net.3600
NSgns3.cloudns.net.3600
A72.251.236.573600
AAAA2001:48c8:17:1::573600
MX10 mx.physorg.com.3600
TXT"google-site-verification=NkdBcKQQLSbKqiyMhXJ9rk_qyDeVH9HrsRllujpIxco"3600
TXT"facebook-domain-verification=jvfh746hfl0mjvsf5xvpn6r94i1nwl"3600
CAA0 issuewild "sectigo.com"3600

Checks

  • ✓ TTLs within range #32
    TTLs: A 1h, AAAA 1h, MX 1h, NS 1h. The NS TTL at the parent is 2d and in the zone 1h; 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.
  • ✓ CAA restricts issuance #35
    Certificates may be issued by: sectigo.com.