invaluable.com

Checked 22 October 2026, 09:21 UTC · via 8.8.8.8
!Passed with warnings
25 passed 2 warnings 0 failed 4 info

Registration

info

.com generic · Network Solutions, LLC · expires 2030-10-07

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
Network Solutions, LLC
Registered
8 October 1998
Last changed
7 October 2020
Expires
7 October 2030
Status
client transfer prohibited
Registry nameservers
ns-1229.awsdns-25.org, ns-1563.awsdns-03.co.uk, ns-493.awsdns-61.com, ns-904.awsdns-49.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 2030-10-07 #3
    The registration is valid until 2030-10-07 (1445 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-1229.awsdns-25.org, ns-1563.awsdns-03.co.uk, ns-493.awsdns-61.com, ns-904.awsdns-49.net

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
ns-1229.awsdns-25.org, ns-1563.awsdns-03.co.uk, ns-493.awsdns-61.com, ns-904.awsdns-49.net
NS in the zone
ns-1229.awsdns-25.org, ns-1563.awsdns-03.co.uk, ns-493.awsdns-61.com, ns-904.awsdns-49.net
NameserverAddressesNetwork (AS)Glue
ns-1229.awsdns-25.org205.251.196.205 2600:9000:5304:cd00::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US-
ns-1563.awsdns-03.co.uk205.251.198.27 2600:9000:5306:1b00::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US-
ns-493.awsdns-61.com205.251.193.237 2600:9000:5301:ed00::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US205.251.193.237 2600:9000:5301:ed00::1
ns-904.awsdns-49.net205.251.195.136 2600:9000:5303:8800::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US-

Checks

  • ✓ 4 nameservers #6
    Delegated to ns-1229.awsdns-25.org, ns-1563.awsdns-03.co.uk, ns-493.awsdns-61.com, ns-904.awsdns-49.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-1229.awsdns-25.org 205.251.196.205NOERROR, 3 ms, authoritativenoyes / yesrefused-
ns-1229.awsdns-25.org 2600:9000:5304:cd00::1NOERROR, 4 ms, authoritativenoyes / yesrefused-
ns-1563.awsdns-03.co.uk 205.251.198.27NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns-1563.awsdns-03.co.uk 2600:9000:5306:1b00::1NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns-493.awsdns-61.com 205.251.193.237NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns-493.awsdns-61.com 2600:9000:5301:ed00::1NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns-904.awsdns-49.net 205.251.195.136NOERROR, 4 ms, authoritativenoyes / yesrefused-
ns-904.awsdns-49.net 2600:9000:5303:8800::1NOERROR, 4 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-904.awsdns-49.net

Found

Primary (MNAME)
ns-904.awsdns-49.net
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-1229.awsdns-25.org (205.251.196.205)1
ns-1229.awsdns-25.org (2600:9000:5304:cd00::1)1
ns-1563.awsdns-03.co.uk (205.251.198.27)1
ns-1563.awsdns-03.co.uk (2600:9000:5306:1b00::1)1
ns-493.awsdns-61.com (205.251.193.237)1
ns-493.awsdns-61.com (2600:9000:5301:ed00::1)1
ns-904.awsdns-49.net (205.251.195.136)1
ns-904.awsdns-49.net (2600:9000:5303:8800::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-904.awsdns-49.net 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

warn

35 records at the apex

Found

Read from
205.251.196.205:53
TypeValueTTL
SOAns-904.awsdns-49.net. awsdns-hostmaster.amazon.com. 1 7200 900 1209600 86400900
NSns-1229.awsdns-25.org.172800
NSns-1563.awsdns-03.co.uk.172800
NSns-493.awsdns-61.com.172800
NSns-904.awsdns-49.net.172800
A3.23.221.10560
A18.118.53.14260
A3.136.16.21160
MX10 us-smtp-inbound-1.mimecast.com.3600
MX20 us-smtp-inbound-2.mimecast.com.3600
TXT"1password-site-verification=P3KNO3BT5NCVNOILYAN2NQYJ24"300
TXT"3KGO1AQ46MB8AN0QIQ81L990BQ"300
TXT"MS=ms69626911"300
TXT"ZOOM_verify_JA1yAKbpQlx1UuBTSvFMFL"300
TXT"_globalsign-domain-verification=Fw09cFhmPL_-Bfg6BV5_NkyDEkXJfmQd4uPViX560A"300
TXT"anthropic-domain-verification-j2y8vk=aRNpDccO0idRT61rlze9rMYk8"300
TXT"atlassian-domain-verification=yR2fT/QYLTLGCfpFszxHz9tD0jnVnj/FtZkBp09Ws1dzQZGJWvfRqqnl1AfUtoQQ"300
TXT"facebook-domain-verification=latuq1plehe3tgkectvufbx66s52sg"300
TXT"globalsign-domain-verification=uyj4tt9q-A42e3Yu7NxbvzQ4ns9M02lt3zOvZh2r5_"300
TXT"google-gws-recovery-domain-verification=74519982"300
TXT"google-site-verification=4tzRpwEFzA8br38ZBtzWvPJt1Ztj11I28xQW-ZgNsWE"300
TXT"google-site-verification=9DNR6gEoqy-TLVZxGJfxg-Gwt60U9DraxofeEdqAYLY"300
TXT"google-site-verification=EaNhSi7eyesTYZ0A0wN6_NNwhhAOWcyMUcFuay66q_0"300
TXT"google-site-verification=Up-SySH9lPHIzmvUeSn3KH70d9LIX5dUH1ALhe_wyJ8"300
TXT"google-site-verification=eJRQ1GgADIQvncHCBTnNG0Nff6bhbr_Lz1z_BeIrlAU"300
TXT"google-site-verification=qRD8jQ0v7rdBoBATMRpZ8RweiU_Plwgw19M8zyivH0Q"300
TXT"google-site-verification=qan5kkgl87XTMmNBn-ce7nqKDAF4OwsuFT21XJ7hM38"300
TXT"google-site-verification=tYVSUQ5MixBpyAnA6hcE9BQzEBe53jiDcGsQwEdtcfA"300
TXT"npoog4rivso84eh21bcpmq4f6n"300
TXT"o5bach28t0vjdpochn4rebe1o8"300
TXT"rb43h3m1pbnkfjj49dslppout9"300
TXT"status-page-domain-verification=bnj6pj69l5lv"300
TXT"tipalti-domain-verification=3237ac02-ed31-f111-838f-02501973a9c1"300
TXT"v5u95r4m3a23icvqkob4juks86"300
TXT"v=spf1 ip4:192.81.98.0/24 include:spf.protection.outlook.com include:email.chargebee.com" " ip4:207.211.31.0/25 ip4:205.139.110.0/24 ip4:216.205.24.0/24 ip4:170.10.129.0/24 ip4:63.128.21.0/24 ip4:41.74.192.0/22 ip4:41.74.196.0/22 ip4:41.74.200.0/23 ip4:41.74.204.0/23" " ip4:41.74.206.0/24 ip4:51.163.158.0/24 ip4:194.104.109.0/24 ip4:194.104.110.21/32 ip4:194.104.110.240/28 ip4:194.104.111.0/24 ip4:62.140.7.0/24 ip4:62.140.10.21/32 ip4:194.104.108.240/29 ip4:194.104.108.21/32 ip4:103.13.69.0/24 ip4:124.47.150.0/24" " ip4:124.47.189.0/24 ip4:103.96.23.0/24 ip4:103.96.21.0/24 ip4:103.96.22.96/28 ip4:103.96.22.22/32 ip4:103.96.20.96/28 ip4:103.96.20.22/32 ip4:170.10.133.0/24 ip4:180.189.28.0/24 ip4:216.145.217.0/24 include:_spf.salesforce.com include:sendgrid.net ~all"300

Checks

  • !
    Very low TTLs
    These records have a TTL below 5m, causing extra queries and slower lookups: A (1m). Low TTLs are useful just before a planned change.
    #32
  • ✓ 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