tutorialspoint.com

Checked 22 October 2026, 11:13 UTC · via 8.8.8.8
!Passed with warnings
27 passed 2 warnings 0 failed 6 info

Registration

info

.com generic · GoDaddy.com, LLC · expires 2027-09-30

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
GoDaddy.com, LLC
Registered
30 September 2006
Last changed
10 October 2026
Expires
30 September 2027
Status
client delete prohibited, client renew prohibited, client transfer prohibited, client update prohibited
Registry nameservers
pdns13.domaincontrol.com, pdns14.domaincontrol.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 2027-09-30 #3
    The registration is valid until 2027-09-30 (342 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

warn

pdns13.domaincontrol.com, pdns14.domaincontrol.com

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
pdns13.domaincontrol.com, pdns14.domaincontrol.com
NS in the zone
pdns13.domaincontrol.com, pdns14.domaincontrol.com
NameserverAddressesNetwork (AS)Glue
pdns13.domaincontrol.com97.74.110.56AS44273 GODADDY-DNS - Host Europe GmbH, DE97.74.110.56
pdns14.domaincontrol.com173.201.78.56AS44273 GODADDY-DNS - Host Europe GmbH, DE173.201.78.56

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: pdns13.domaincontrol.com, pdns14.domaincontrol.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.
  • ✓ 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 (AS44273 (GODADDY-DNS - Host Europe GmbH, DE): 2 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 .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
  • !
    No IPv6
    None of the nameservers has an IPv6 address, so IPv6-only resolvers can't reach them.
    #13

Nameservers

pass

2 of 2 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
pdns13.domaincontrol.com 97.74.110.56NOERROR, 3 ms, authoritativenoyes / yesrefused-
pdns14.domaincontrol.com 173.201.78.56NOERROR, 3 ms, authoritativenoyes / yesrefused-

Checks

  • ✓ All respond #14
    All 2 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.
  • ✓ No version disclosed #17
    The nameservers don't reveal their software version.
  • ✓ 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 2026070815 · primary pdns13.domaincontrol.com

Found

Primary (MNAME)
pdns13.domaincontrol.com
Contact (RNAME)
dns.jomax.net
Serial
2026070815
Refresh / retry
28800 s / 7200 s
Expire
604800 s
Negative TTL
600 s

Serial per nameserver

NameserverSerial
pdns13.domaincontrol.com (97.74.110.56)2026070815
pdns14.domaincontrol.com (173.201.78.56)2026070815

Checks

  • ✓ Serial 2026070815 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 8h, retry 2h, expire 7d, negative TTL 10m.
  • ✓ Primary is a public nameserver #24
    The primary nameserver pdns13.domaincontrol.com is one of the listed nameservers.
  • ✓ Contact dns@jomax.net #25
    The SOA RNAME dns.jomax.net means dns@jomax.net.
  • ✓ Date-based serial #26
    The serial 2026070815 follows the YYYYMMDDnn convention (2026-07-08).

DNSSEC

warn

Signed, DS published at parent

Found

Validated by resolver
yes
Denial of existence
NSEC
Signatures valid until
25 October 2026

DS at the parent

Key tagAlgorithmDigestMatches a key
27873ECDSAP256SHA256 (13)SHA256 6DA42D0382CB8A6F…yes
14138ECDSAP256SHA256 (13)SHA256 9A7EC2EC4161AB6F…yes

DNSKEY in the zone

Key tagRoleAlgorithm
27873KSK (257)ECDSAP256SHA256 (13)
14138KSK (257)ECDSAP256SHA256 (13)
47541ZSK (256)ECDSAP256SHA256 (13)
1041ZSK (256)ECDSAP256SHA256 (13)

Checks

  • ✓ Signed and validated #27
    The zone is signed, the parent publishes a DS record, and the resolver validates the answers.
  • ✓ DS matches a key #28
    The DS record at the parent matches a key in the zone: key tag 27873 (SHA256), key tag 14138 (SHA256).
  • ✓ Modern algorithms #29
    Key algorithms: ECDSAP256SHA256 (13).
  • !
    Signatures expire soon
    The earliest signature expires at 2026-10-25 10:16 UTC (in 71h0m0s). Check that automatic re-signing works.
    #30
  • i
    NSEC
    The zone uses NSEC, so its full contents can be listed by walking the NSEC chain. That is fine unless the names are sensitive.
    #31

Records

info

15 records at the apex

Found

Read from
97.74.110.56:53
TypeValueTTL
SOApdns13.domaincontrol.com. dns.jomax.net. 2026070815 28800 7200 604800 6003600
NSpdns13.domaincontrol.com.3600
NSpdns14.domaincontrol.com.3600
A135.181.223.2543600
MX1 aspmx.l.google.com.3600
MX10 alt4.aspmx.l.google.com.3600
MX10 alt3.aspmx.l.google.com.3600
MX5 alt2.aspmx.l.google.com.3600
MX5 alt1.aspmx.l.google.com.3600
TXT"v=spf1 include:spf.sendinblue.com include:_spf.google.com ~all"1800
TXT"google-site-verification=S2zMIBQyc6WxHPiOdUzkWYvx_FKbf03xDOsI8OgG20A"1800
TXT"ggcf4w839g1xkdg2r37ns4x4w3y04g2g"1800
TXT"Sendinblue-code:7f95f2741c679f5d4a96ef24caafe733"1800
TXT"google-site-verification=-RNr-P1jBNMarh7tMQEgXtlBVUi000DUph-h8H7uSaQ"1800
TXT"2b12sk0mqxgjl19wg2fmzsjkdm2thbq7"1800

Checks

  • ✓ TTLs within range #32
    TTLs: A 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.
  • 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