inc42.com

Checked 22 October 2026, 09:16 UTC · via 8.8.8.8
!Passed with warnings
29 passed 1 warning 0 failed 5 info

Registration

info

.com generic · GoDaddy.com, LLC · expires 2028-06-11

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
GoDaddy.com, LLC
Registered
11 June 2012
Last changed
18 May 2026
Expires
11 June 2028
Status
client delete prohibited, client renew prohibited, client transfer prohibited, client update prohibited
Registry nameservers
isaac.ns.cloudflare.com, jean.ns.cloudflare.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 2028-06-11 #3
    The registration is valid until 2028-06-11 (598 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

isaac.ns.cloudflare.com, jean.ns.cloudflare.com

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
isaac.ns.cloudflare.com, jean.ns.cloudflare.com
NS in the zone
isaac.ns.cloudflare.com, jean.ns.cloudflare.com
NameserverAddressesNetwork (AS)Glue
isaac.ns.cloudflare.com108.162.193.177 173.245.59.177 172.64.33.177 2a06:98c1:50::ac40:21b1 2803:f800:50::6ca2:c1b1 2606:4700:58::adf5:3bb1AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US108.162.193.177 172.64.33.177 173.245.59.177 2606:4700:58::adf5:3bb1 2803:f800:50::6ca2:c1b1 2a06:98c1:50::ac40:21b1
jean.ns.cloudflare.com172.64.32.121 108.162.192.121 173.245.58.121 2a06:98c1:50::ac40:2079 2606:4700:50::adf5:3a79 2803:f800:50::6ca2:c079AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US108.162.192.121 172.64.32.121 173.245.58.121 2606:4700:50::adf5:3a79 2803:f800:50::6ca2:c079 2a06:98c1:50::ac40:2079

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: isaac.ns.cloudflare.com, jean.ns.cloudflare.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 6 IPv4 /24s and 4 IPv6 /48s.
  • i
    All nameservers in one AS
    All nameserver addresses are announced by one network operator (AS13335 (CLOUDFLARENET - Cloudflare, Inc., US): 12 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
  • ✓ All reachable over IPv6 #13
    Every nameserver has an IPv6 address.

Nameservers

warn

12 of 12 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
isaac.ns.cloudflare.com 108.162.193.177NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
isaac.ns.cloudflare.com 173.245.59.177NOERROR, 20 ms, authoritativenoyes / yesrefused2026.10.2
isaac.ns.cloudflare.com 172.64.33.177NOERROR, 16 ms, authoritativenoyes / yesrefused2026.10.2
isaac.ns.cloudflare.com 2a06:98c1:50::ac40:21b1NOERROR, 18 ms, authoritativenoyes / yesrefused2026.10.2
isaac.ns.cloudflare.com 2803:f800:50::6ca2:c1b1NOERROR, 27 ms, authoritativenoyes / yesrefused2026.10.2
isaac.ns.cloudflare.com 2606:4700:58::adf5:3bb1NOERROR, 21 ms, authoritativenoyes / yesrefused2026.10.2
jean.ns.cloudflare.com 172.64.32.121NOERROR, 20 ms, authoritativenoyes / yesrefused2026.10.2
jean.ns.cloudflare.com 108.162.192.121NOERROR, 16 ms, authoritativenoyes / yesrefused2026.10.2
jean.ns.cloudflare.com 173.245.58.121NOERROR, 19 ms, authoritativenoyes / yesrefused2026.10.2
jean.ns.cloudflare.com 2a06:98c1:50::ac40:2079NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
jean.ns.cloudflare.com 2606:4700:50::adf5:3a79NOERROR, 18 ms, authoritativenoyes / yesrefused2026.10.2
jean.ns.cloudflare.com 2803:f800:50::6ca2:c079NOERROR, 16 ms, authoritativenoyes / yesrefused2026.10.2

Checks

  • ✓ All respond #14
    All 12 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: isaac.ns.cloudflare.com: "2026.10.2"; jean.ns.cloudflare.com: "2026.10.2". 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

pass

serial 2418075192 · primary isaac.ns.cloudflare.com

Found

Primary (MNAME)
isaac.ns.cloudflare.com
Contact (RNAME)
dns.cloudflare.com
Serial
2418075192
Refresh / retry
10000 s / 2400 s
Expire
604800 s
Negative TTL
1800 s

Serial per nameserver

NameserverSerial
isaac.ns.cloudflare.com (108.162.193.177)2418075192
isaac.ns.cloudflare.com (173.245.59.177)2418075192
isaac.ns.cloudflare.com (172.64.33.177)2418075192
isaac.ns.cloudflare.com (2a06:98c1:50::ac40:21b1)2418075192
isaac.ns.cloudflare.com (2803:f800:50::6ca2:c1b1)2418075192
isaac.ns.cloudflare.com (2606:4700:58::adf5:3bb1)2418075192
jean.ns.cloudflare.com (172.64.32.121)2418075192
jean.ns.cloudflare.com (108.162.192.121)2418075192
jean.ns.cloudflare.com (173.245.58.121)2418075192
jean.ns.cloudflare.com (2a06:98c1:50::ac40:2079)2418075192
jean.ns.cloudflare.com (2606:4700:50::adf5:3a79)2418075192
jean.ns.cloudflare.com (2803:f800:50::6ca2:c079)2418075192

Checks

  • ✓ Serial 2418075192 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 2h46m40s, retry 40m, expire 7d, negative TTL 30m.
  • ✓ Primary is a public nameserver #24
    The primary nameserver isaac.ns.cloudflare.com is one of the listed nameservers.
  • ✓ Contact dns@cloudflare.com #25
    The SOA RNAME dns.cloudflare.com means dns@cloudflare.com.
  • ✓ Timestamp serial #26
    The serial 2418075192 is a Unix timestamp (2046-08-16 23:33 UTC).

DNSSEC

info

Signed, DS published at parent

Found

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

DS at the parent

Key tagAlgorithmDigestMatches a key
2371ECDSAP256SHA256 (13)SHA256 F80ACEF4C807FA19…yes

DNSKEY in the zone

Key tagRoleAlgorithm
2371KSK (257)ECDSAP256SHA256 (13)
34505ZSK (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 2371 (SHA256).
  • ✓ Modern algorithms #29
    Key algorithms: ECDSAP256SHA256 (13).
  • ✓ Short-lived signatures (online signing) #30
    Signatures are valid for 50h0m0s and created on demand; the current one was made at 2026-10-21 08:16 UTC and expires at 2026-10-23 10:16 UTC.
  • 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

pass

29 records at the apex

Found

Read from
108.162.193.177:53
TypeValueTTL
SOAisaac.ns.cloudflare.com. dns.cloudflare.com. 2418075192 10000 2400 604800 18001800
NSisaac.ns.cloudflare.com.86400
NSjean.ns.cloudflare.com.86400
A172.67.75.188300
A104.26.12.104300
A104.26.13.104300
AAAA2606:4700:20::681a:c68300
AAAA2606:4700:20::ac43:4bbc300
AAAA2606:4700:20::681a:d68300
MX1 aspmx.l.google.com.300
MX10 aspmx2.googlemail.com.300
MX10 aspmx3.googlemail.com.300
MX5 alt1.aspmx.l.google.com.300
MX5 alt2.aspmx.l.google.com.300
TXT"MS=ms11844522"300
TXT"ca3-a4eded8dda2444738beb2d5266c5133a"300
TXT"facebook-domain-verification=exzuwe1l01exdhlz9pds101z0vidkr"300
TXT"google-site-verification=gkh6UJ_b7ZIIenl1tzk_PGEwI-LRQRqSJV0dxlkZODM"300
TXT"v=spf1 include:_spf.google.com include:spf.mandrillapp.com include:sender.zohobooks.com ~all"300
CAA0 issue "comodoca.com"3600
CAA0 issue "digicert.com; cansignhttpexchanges=yes"3600
CAA0 issue "letsencrypt.org"3600
CAA0 issue "pki.goog; cansignhttpexchanges=yes"3600
CAA0 issue "ssl.com"3600
CAA0 issuewild "comodoca.com"3600
CAA0 issuewild "digicert.com; cansignhttpexchanges=yes"3600
CAA0 issuewild "letsencrypt.org"3600
CAA0 issuewild "pki.goog; cansignhttpexchanges=yes"3600
CAA0 issuewild "ssl.com"3600

Checks

  • ✓ TTLs within range #32
    TTLs: A 5m, AAAA 5m, MX 5m, 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.
  • ✓ CAA restricts issuance #35
    Certificates may be issued by: comodoca.com, digicert.com, letsencrypt.org, pki.goog, ssl.com.