searchengineland.com

Checked 22 October 2026, 10:35 UTC · via 8.8.8.8
!Passed with warnings
23 passed 2 warnings 0 failed 6 info

Registration

info

.com generic · Tiger Technologies LLC · expires 2027-07-26

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
Tiger Technologies LLC
Registered
26 July 2006
Last changed
27 July 2026
Expires
26 July 2027
Status
active
Registry nameservers
bob.ns.cloudflare.com, hera.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 2027-07-26 #3
    The registration is valid until 2027-07-26 (277 days).
  • i
    No transfer lock
    The domain has no transfer lock (status: active). A registrar lock protects against unauthorized transfers.
    #4
  • ✓ Registry and delegation match #5
    The nameservers registered at the registry are the ones published in DNS.

Delegation

info

bob.ns.cloudflare.com, hera.ns.cloudflare.com

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
bob.ns.cloudflare.com, hera.ns.cloudflare.com
NS in the zone
bob.ns.cloudflare.com, hera.ns.cloudflare.com
NameserverAddressesNetwork (AS)Glue
bob.ns.cloudflare.com108.162.193.104 172.64.33.104 173.245.59.104 2a06:98c1:50::ac40:2168 2803:f800:50::6ca2:c168 2606:4700:58::adf5:3b68AS13335 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., US108.162.193.104 172.64.33.104 173.245.59.104 2606:4700:58::adf5:3b68 2803:f800:50::6ca2:c168 2a06:98c1:50::ac40:2168
hera.ns.cloudflare.com173.245.58.162 108.162.192.162 172.64.32.162 2a06:98c1:50::ac40:20a2 2803:f800:50::6ca2:c0a2 2606:4700:50::adf5:3aa2AS13335 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., US108.162.192.162 172.64.32.162 173.245.58.162 2606:4700:50::adf5:3aa2 2803:f800:50::6ca2:c0a2 2a06:98c1:50::ac40:20a2

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: bob.ns.cloudflare.com, hera.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
bob.ns.cloudflare.com 108.162.193.104NOERROR, 7 ms, authoritativenoyes / yesrefused2026.10.2
bob.ns.cloudflare.com 172.64.33.104NOERROR, 6 ms, authoritativenoyes / yesrefused2026.10.2
bob.ns.cloudflare.com 173.245.59.104NOERROR, 6 ms, authoritativenoyes / yesrefused2026.10.2
bob.ns.cloudflare.com 2a06:98c1:50::ac40:2168NOERROR, 11 ms, authoritativenoyes / yesrefused2026.10.2
bob.ns.cloudflare.com 2803:f800:50::6ca2:c168NOERROR, 6 ms, authoritativenoyes / yesrefused2026.10.2
bob.ns.cloudflare.com 2606:4700:58::adf5:3b68NOERROR, 7 ms, authoritativenoyes / yesrefused2026.10.2
hera.ns.cloudflare.com 173.245.58.162NOERROR, 4 ms, authoritativenoyes / yesrefused2026.10.2
hera.ns.cloudflare.com 108.162.192.162NOERROR, 5 ms, authoritativenoyes / yesrefused2026.10.2
hera.ns.cloudflare.com 172.64.32.162NOERROR, 5 ms, authoritativenoyes / yesrefused2026.10.2
hera.ns.cloudflare.com 2a06:98c1:50::ac40:20a2NOERROR, 6 ms, authoritativenoyes / yesrefused2026.10.2
hera.ns.cloudflare.com 2803:f800:50::6ca2:c0a2NOERROR, 6 ms, authoritativenoyes / yesrefused2026.10.2
hera.ns.cloudflare.com 2606:4700:50::adf5:3aa2NOERROR, 8 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: bob.ns.cloudflare.com: "2026.10.2"; hera.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 2418103104 · primary bob.ns.cloudflare.com

Found

Primary (MNAME)
bob.ns.cloudflare.com
Contact (RNAME)
dns.cloudflare.com
Serial
2418103104
Refresh / retry
10000 s / 2400 s
Expire
604800 s
Negative TTL
1800 s

Serial per nameserver

NameserverSerial
bob.ns.cloudflare.com (108.162.193.104)2418103104
bob.ns.cloudflare.com (172.64.33.104)2418103104
bob.ns.cloudflare.com (173.245.59.104)2418103104
bob.ns.cloudflare.com (2a06:98c1:50::ac40:2168)2418103104
bob.ns.cloudflare.com (2803:f800:50::6ca2:c168)2418103104
bob.ns.cloudflare.com (2606:4700:58::adf5:3b68)2418103104
hera.ns.cloudflare.com (173.245.58.162)2418103104
hera.ns.cloudflare.com (108.162.192.162)2418103104
hera.ns.cloudflare.com (172.64.32.162)2418103104
hera.ns.cloudflare.com (2a06:98c1:50::ac40:20a2)2418103104
hera.ns.cloudflare.com (2803:f800:50::6ca2:c0a2)2418103104
hera.ns.cloudflare.com (2606:4700:50::adf5:3aa2)2418103104

Checks

  • ✓ Serial 2418103104 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 bob.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 2418103104 is a Unix timestamp (2046-08-17 07:18 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

15 records at the apex

Found

Read from
108.162.193.104:53
TypeValueTTL
SOAbob.ns.cloudflare.com. dns.cloudflare.com. 2418103104 10000 2400 604800 18001800
NSbob.ns.cloudflare.com.86400
NShera.ns.cloudflare.com.86400
A104.18.16.195300
A104.18.17.195300
AAAA2606:4700::6812:11c3300
AAAA2606:4700::6812:10c3300
MX10 mx1.tigertech.net.300
MX10 mx2.tigertech.net.300
MX20 mx3.tigertech.net.300
TXT"apple-domain-verification=OydlW9ZQYQsAQ7C2LUc2lMgrtrEMtpTIXGkPIIkE_fE"300
TXT"facebook-domain-verification=fzllc7h10zj6dsj4582utk83bwzpb8"300
TXT"google-site-verification=c9app5XVp8lVmCyt-cHaPGOrTdwfrBbZW6HoZeH7Rnc"300
TXT"v=spf1 include:tigertech.net include:_u.searchengineland.com._spf.smart.ondmarc.com ~all"300
TXT"yahoo-verification-key=bwoMKfexANXq8QhaHmgiOE1b9AkEXR5IP+l20aL4MSc="300

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.
  • 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