webinargeek.com

Checked 22 October 2026, 11:24 UTC · via 8.8.8.8
!Passed with warnings
27 passed 1 warning 0 failed 3 info

Registration

info

.com generic · InterNetX GmbH · expires 2027-04-02

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
InterNetX GmbH
Registered
2 April 2014
Last changed
3 April 2026
Expires
2 April 2027
Status
client transfer prohibited
Registry nameservers
ns-1244.awsdns-27.org, ns-1708.awsdns-21.co.uk, ns-287.awsdns-35.com, ns-732.awsdns-27.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 2027-04-02 #3
    The registration is valid until 2027-04-02 (162 days).
  • ✓ Transfer locked #4
    Registry status: client transfer prohibited.
  • ✓ Registry and delegation match #5
    The nameservers registered at the registry are the ones published in DNS.

Delegation

info

ns-1244.awsdns-27.org, ns-1708.awsdns-21.co.uk, ns-287.awsdns-35.com, ns-732.awsdns-27.net

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
ns-1244.awsdns-27.org, ns-1708.awsdns-21.co.uk, ns-287.awsdns-35.com, ns-732.awsdns-27.net
NS in the zone
ns-1244.awsdns-27.org, ns-1708.awsdns-21.co.uk, ns-287.awsdns-35.com, ns-732.awsdns-27.net
NameserverAddressesNetwork (AS)Glue
ns-1244.awsdns-27.org205.251.196.220 2600:9000:5304:dc00::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US-
ns-1708.awsdns-21.co.uk205.251.198.172 2600:9000:5306:ac00::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US-
ns-287.awsdns-35.com205.251.193.31 2600:9000:5301:1f00::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US205.251.193.31 2600:9000:5301:1f00::1
ns-732.awsdns-27.net205.251.194.220 2600:9000:5302:dc00::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US-

Checks

  • ✓ 4 nameservers #6
    Delegated to ns-1244.awsdns-27.org, ns-1708.awsdns-21.co.uk, ns-287.awsdns-35.com, ns-732.awsdns-27.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.
  • ✓ Nameservers in different networks #10
    The nameservers are spread over 4 IPv4 /24s and 4 IPv6 /48s.
  • i
    All nameservers in one AS
    All nameserver addresses are announced by one network operator (AS16509 (AMAZON-02 - Amazon.com, Inc., US): 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
  • ✓ Nameserver names under 4 TLDs #12
    Nameserver names use the TLDs .com, .net, .org, .uk.
  • ✓ All reachable over IPv6 #13
    Every nameserver has an IPv6 address.

Nameservers

pass

8 of 8 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns-1244.awsdns-27.org 205.251.196.220NOERROR, 4 ms, authoritativenoyes / yesrefused-
ns-1244.awsdns-27.org 2600:9000:5304:dc00::1NOERROR, 8 ms, authoritativenoyes / yesrefused-
ns-1708.awsdns-21.co.uk 205.251.198.172NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns-1708.awsdns-21.co.uk 2600:9000:5306:ac00::1NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns-287.awsdns-35.com 205.251.193.31NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns-287.awsdns-35.com 2600:9000:5301:1f00::1NOERROR, 13 ms, authoritativenoyes / yesrefused-
ns-732.awsdns-27.net 205.251.194.220NOERROR, 4 ms, authoritativenoyes / yesrefused-
ns-732.awsdns-27.net 2600:9000:5302:dc00::1NOERROR, 7 ms, authoritativenoyes / yesrefused-

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.
  • ✓ 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 1 · primary ns-287.awsdns-35.com

Found

Primary (MNAME)
ns-287.awsdns-35.com
Contact (RNAME)
awsdns-hostmaster.amazon.com
Serial
1
Refresh / retry
7200 s / 900 s
Expire
1209600 s
Negative TTL
86400 s

Serial per nameserver

NameserverSerial
ns-1244.awsdns-27.org (205.251.196.220)1
ns-1244.awsdns-27.org (2600:9000:5304:dc00::1)1
ns-1708.awsdns-21.co.uk (205.251.198.172)1
ns-1708.awsdns-21.co.uk (2600:9000:5306:ac00::1)1
ns-287.awsdns-35.com (205.251.193.31)1
ns-287.awsdns-35.com (2600:9000:5301:1f00::1)1
ns-732.awsdns-27.net (205.251.194.220)1
ns-732.awsdns-27.net (2600:9000:5302:dc00::1)1

Checks

  • ✓ Serial 1 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 2h, retry 15m, expire 14d, negative TTL 1d.
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns-287.awsdns-35.com is one of the listed nameservers.
  • ✓ Contact awsdns-hostmaster@amazon.com #25
    The SOA RNAME awsdns-hostmaster.amazon.com means awsdns-hostmaster@amazon.com.
  • ✓ Counter serial #26
    The serial 1 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

26 records at the apex

Found

Read from
205.251.196.220:53
TypeValueTTL
SOAns-287.awsdns-35.com. awsdns-hostmaster.amazon.com. 1 7200 900 1209600 86400900
NSns-1244.awsdns-27.org.172800
NSns-1708.awsdns-21.co.uk.172800
NSns-287.awsdns-35.com.172800
NSns-732.awsdns-27.net.172800
A216.150.1.1300
MX1 aspmx.l.google.com.300
MX10 alt3.aspmx.l.google.com.300
MX10 alt4.aspmx.l.google.com.300
MX5 alt1.aspmx.l.google.com.300
MX5 alt2.aspmx.l.google.com.300
TXT"MS=E2BDC518B2F4FCB634B332DB1FCE2B9D73BDC115"300
TXT"_gp39vaja4yarz44gwdzfech0dp4zf05"300
TXT"_hbhamfjkrregqjk74n8jt4ugysv3xuq"300
TXT"anthropic-domain-verification-pkfpj8=eFpzFXMuBr8FddGNSPgwTBr3D"300
TXT"facebook-domain-verification=5m60amo4tq3e8xiuzb5e79lod9c722"300
TXT"google-site-verification=ZbaLdpHB45x11S1VuBPyRi5TiGsRkMtoYa-2joC5dZg"300
TXT"hubspot-developer-verification=OWFmZWY2ODgtMGM5OS00YjczLWEyMjEtZTFjMjJmMGRhNTAw"300
TXT"v=spf1 a mx include:_spf.sparkpostmail.com include:_spf.google.com include:_spf.eu.sparkpostmail.com ~all"300
CAA128 iodef "mailto:admin@webinargeek.com"300
CAA128 issue "amazon.com"300
CAA128 issue "digicert.com"300
CAA128 issue "letsencrypt.org"300
CAA128 issuewild "amazon.com"300
CAA128 issuewild "digicert.com"300
CAA128 issuewild "letsencrypt.org"300

Checks

  • ✓ TTLs within range #32
    TTLs: A 5m, MX 5m, NS 2d.
  • ✓ 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
  • ✓ CAA restricts issuance #35
    Certificates may be issued by: amazon.com, digicert.com, letsencrypt.org.