technorati.com

Checked 22 October 2026, 11:00 UTC · via 8.8.8.8
!Passed with warnings
22 passed 3 warnings 0 failed 6 info

Registration

warn

.com generic · GoDaddy.com, LLC · expires 2026-11-10

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
GoDaddy.com, LLC
Registered
10 November 2002
Last changed
11 November 2025
Expires
10 November 2026
Status
client delete prohibited, client renew prohibited, client transfer prohibited, client update prohibited
Registry nameservers
ns1.synacortechnologies.com, ns2.synacortechnologies.com, ns3.synacortechnologies.com, ns4.synacortechnologies.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 in 19 days
    The registration expires on 2026-11-10. Make sure it is renewed.
    #3
  • ✓ 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

ns1.synacortechnologies.com, ns2.synacortechnologies.com, ns3.synacortechnologies.com, ns4.synacortechnologies.com

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
ns1.synacortechnologies.com, ns2.synacortechnologies.com, ns3.synacortechnologies.com, ns4.synacortechnologies.com
NS in the zone
ns1.synacortechnologies.com, ns2.synacortechnologies.com, ns3.synacortechnologies.com, ns4.synacortechnologies.com
NameserverAddressesNetwork (AS)Glue
ns1.synacortechnologies.com169.197.85.52AS26548 PUREVOLTAGE-INC - PureVoltage Hosting Inc., US169.197.85.52
ns2.synacortechnologies.com169.197.85.53AS26548 PUREVOLTAGE-INC - PureVoltage Hosting Inc., US169.197.85.53
ns3.synacortechnologies.com72.219.237.159AS12174 AD-MEDIA-01 - Ad.com Interactive Media, Inc., US72.219.237.159
ns4.synacortechnologies.com72.219.237.160AS12174 AD-MEDIA-01 - Ad.com Interactive Media, Inc., US72.219.237.160

Checks

  • ✓ 4 nameservers #6
    Delegated to ns1.synacortechnologies.com, ns2.synacortechnologies.com, ns3.synacortechnologies.com, ns4.synacortechnologies.com.
  • ✓ 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.
  • ✓ 2 autonomous systems #11
    The nameservers are spread over: AS12174 (AD-MEDIA-01 - Ad.com Interactive Media, Inc., US): 2 addresses; AS26548 (PUREVOLTAGE-INC - PureVoltage Hosting Inc., US): 2 addresses.
  • 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

info

4 of 4 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns1.synacortechnologies.com 169.197.85.52NOERROR, 85 ms, authoritativenoyes / yesrefusedgdnsd/3
ns2.synacortechnologies.com 169.197.85.53NOERROR, 85 ms, authoritativenoyes / yesrefusedgdnsd/3
ns3.synacortechnologies.com 72.219.237.159NOERROR, 158 ms, authoritativenoyes / yesrefusedgdnsd/3
ns4.synacortechnologies.com 72.219.237.160NOERROR, 158 ms, authoritativenoyes / yesrefusedgdnsd/3

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.
  • i
    Identifying string disclosed
    These nameservers answer version queries with a string that is not a version number: ns1.synacortechnologies.com: "gdnsd/3"; ns2.synacortechnologies.com: "gdnsd/3"; ns3.synacortechnologies.com: "gdnsd/3"; ns4.synacortechnologies.com: "gdnsd/3".
    #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

info

serial 3 · primary ns1.technorati.com

Found

Primary (MNAME)
ns1.technorati.com
Contact (RNAME)
hostmaster.technorati.com
Serial
3
Refresh / retry
7200 s / 1800 s
Expire
1209600 s
Negative TTL
900 s

Serial per nameserver

NameserverSerial
ns1.synacortechnologies.com (169.197.85.52)3
ns2.synacortechnologies.com (169.197.85.53)3
ns3.synacortechnologies.com (72.219.237.159)3
ns4.synacortechnologies.com (72.219.237.160)3

Checks

  • ✓ Serial 3 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 2h, retry 30m, expire 14d, negative TTL 15m.
  • i
    Hidden master
    The primary nameserver ns1.technorati.com is not listed as a nameserver: a hidden master that only feeds the public secondaries. That is a common setup; make sure it is not reachable for zone transfers from outside.
    #24
  • ✓ Contact hostmaster@technorati.com #25
    The SOA RNAME hostmaster.technorati.com means hostmaster@technorati.com.
  • ✓ Counter serial #26
    The serial 3 is a plain counter.

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

13 records at the apex

Found

Read from
169.197.85.52:53
TypeValueTTL
SOAns1.technorati.com. hostmaster.technorati.com. 3 7200 1800 1209600 900900
NSns1.synacortechnologies.com.7200
NSns2.synacortechnologies.com.7200
NSns3.synacortechnologies.com.7200
NSns4.synacortechnologies.com.7200
A129.213.208.647200
MX10 aspmx2.googlemail.com.7200
MX10 aspmx3.googlemail.com.7200
MX2 aspmx.l.google.com.7200
MX5 alt1.aspmx.l.google.com.7200
MX5 alt2.aspmx.l.google.com.7200
TXT"google-site-verification=Lfghm1JqeCO1RAsxywjZHs2WpTUNC0342EYKNSIQFww"7200
TXT"v=spf1 mx ip4:208.66.64.0/22 include:sendgrid.net"7200

Checks

  • ✓ TTLs within range #32
    TTLs: A 2h, MX 2h, NS 2h. The NS TTL at the parent is 2d and in the zone 2h; resolvers may use either.
  • ✓ No CNAME at the apex #33
    The zone apex has no CNAME record.
  • i
    Wildcard record
    A random name under the zone resolves, so there is a wildcard (*) record. Typos and non-existent hosts resolve too, which can confuse mail and certificate checks.
    #34
  • 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