percona.com

Checked 22 October 2026, 10:13 UTC · via 8.8.8.8
!Passed with warnings
27 passed 2 warnings 0 failed 2 info

Registration

info

.com generic · DNC Holdings, Inc. · expires 2027-06-08

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
DNC Holdings, Inc.
Registered
8 June 2006
Last changed
8 May 2025
Expires
8 June 2027
Status
client delete prohibited, client transfer prohibited, client update prohibited
Registry nameservers
ns-1347.awsdns-40.org, ns-1546.awsdns-01.co.uk, ns-447.awsdns-55.com, ns-815.awsdns-37.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 2027-06-08 #3
    The registration is valid until 2027-06-08 (229 days).
  • ✓ Transfer locked #4
    Registry status: client delete 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

ns-1347.awsdns-40.org, ns-1546.awsdns-01.co.uk, ns-447.awsdns-55.com, ns-815.awsdns-37.net

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
ns-1347.awsdns-40.org, ns-1546.awsdns-01.co.uk, ns-447.awsdns-55.com, ns-815.awsdns-37.net
NS in the zone
ns-1347.awsdns-40.org, ns-1546.awsdns-01.co.uk, ns-447.awsdns-55.com, ns-815.awsdns-37.net
NameserverAddressesNetwork (AS)Glue
ns-1347.awsdns-40.org205.251.197.67 2600:9000:5305:4300::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US-
ns-1546.awsdns-01.co.uk205.251.198.10 2600:9000:5306:a00::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US-
ns-447.awsdns-55.com205.251.193.191 2600:9000:5301:bf00::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US205.251.193.191 2600:9000:5301:bf00::1
ns-815.awsdns-37.net205.251.195.47 2600:9000:5303:2f00::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US-

Checks

  • ✓ 4 nameservers #6
    Delegated to ns-1347.awsdns-40.org, ns-1546.awsdns-01.co.uk, ns-447.awsdns-55.com, ns-815.awsdns-37.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-1347.awsdns-40.org 205.251.197.67NOERROR, 3 ms, authoritativenoyes / yesrefused-
ns-1347.awsdns-40.org 2600:9000:5305:4300::1NOERROR, 5 ms, authoritativenoyes / yesrefused-
ns-1546.awsdns-01.co.uk 205.251.198.10NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns-1546.awsdns-01.co.uk 2600:9000:5306:a00::1NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns-447.awsdns-55.com 205.251.193.191NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns-447.awsdns-55.com 2600:9000:5301:bf00::1NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns-815.awsdns-37.net 205.251.195.47NOERROR, 4 ms, authoritativenoyes / yesrefused-
ns-815.awsdns-37.net 2600:9000:5303:2f00::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-815.awsdns-37.net

Found

Primary (MNAME)
ns-815.awsdns-37.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-1347.awsdns-40.org (205.251.197.67)1
ns-1347.awsdns-40.org (2600:9000:5305:4300::1)1
ns-1546.awsdns-01.co.uk (205.251.198.10)1
ns-1546.awsdns-01.co.uk (2600:9000:5306:a00::1)1
ns-447.awsdns-55.com (205.251.193.191)1
ns-447.awsdns-55.com (2600:9000:5301:bf00::1)1
ns-815.awsdns-37.net (205.251.195.47)1
ns-815.awsdns-37.net (2600:9000:5303:2f00::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-815.awsdns-37.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

40 records at the apex

Found

Read from
205.251.197.67:53
TypeValueTTL
SOAns-815.awsdns-37.net. awsdns-hostmaster.amazon.com. 1 7200 900 1209600 86400900
NSns-1347.awsdns-40.org.172800
NSns-1546.awsdns-01.co.uk.172800
NSns-447.awsdns-55.com.172800
NSns-815.awsdns-37.net.172800
A98.89.9.4160
A100.30.64.6160
MX10 aspmx.l.google.com.3600
MX20 alt1.aspmx.l.google.com.3600
MX20 alt2.aspmx.l.google.com.3600
MX30 aspmx2.googlemail.com.3600
MX30 aspmx3.googlemail.com.3600
TXT"MS=ms94174238"3600
TXT"TAILSCALE-Ln0njsu8in2bkW1sNx5I"3600
TXT"_globalsign-domain-verification=yRdIt507tQIZyVRXF6VBvVbEIWhqpzJaxh8r1qdSUr"3600
TXT"anthropic-domain-verification-z0z622=QdUwqoQeRpCVypPn4j8hLeuEK"3600
TXT"atlassian-domain-verification=V3AFkUqaLd/i61c6jX/Nbdo1pl018wJ6OZ6nPHSrs4FpQFdw6byjyZauK272e8b2"3600
TXT"atlassian-domain-verification=mogNS3wMQezryqKDLJqFMlGH98i7K/5MZZlKn5o50tVvqzppNNJxb3/Y9IvexZPc"3600
TXT"atlassian-domain-verification=x6/yZ8Q9iFUAp55TZq+hs8jZ/zVHxMrP39tPky3y9QhFSnWa1PKvuVlN51t/77DQ"3600
TXT"box-domain-verification=1766cd72367386f45f1eea147564984f988c66bef4ef9895a23261b9862ca23e"3600
TXT"canva-site-verification=HYBCkXiGHRLal01_prAo_g"3600
TXT"cursor-domain-verification-k5b9r4=t85936gp0ooYLMbmxHjLSl2Fm"3600
TXT"docusign=f7a07e69-6a00-4e38-bbde-e80f4291a08b"3600
TXT"duo_sso_verification=Kw4gOF1nY3YzYCON1Kov5Xlr9YkEbWCOTXnFQ3OyS94kliFqSFMbokuG7Ffw3WWw"3600
TXT"google-site-verification=QWmjDvs-m95vBEQWetMix5o0s_HXzs04C45ZFrNeujk"3600
TXT"intacct-esk=4FED1A55D9767088E053D706A8C0E546"3600
TXT"miro-verification=d99747ddeb212e624c63aa0e5d3f19b88d6ffdf4"3600
TXT"mongodb-site-verification=JSL6kzzn2c2pw4rLmXzx3fnUmz3CaU0W"3600
TXT"mongodb-site-verification=kVRpItpj85VHQ5HVUte3Mfy8FgLDkA5n"3600
TXT"notion-domain-verification=n2z3g1syZtAUc9iV6gnIyOCiDQMgZeEj2Cuwba9Xw54"3600
TXT"openai-domain-verification=dv-IeHTXXxxajy1mfCMj3kuC84J"3600
TXT"site24x7-signals-domain-verification=7b8dd035f15aff1b710340c115283b49"3600
TXT"v=spf1 include:_spf.salesforce.com include:_spf.google.com include:entrustedmail.net include:_spf.percona.com include:758664.spf08.hubspotemail.net include:_spf.intacct.com -all"3600
CAA0 issue "GoDaddy.com"3600
CAA0 issue "amazon.com"3600
CAA0 issue "comodoca.com"3600
CAA0 issue "digicert.com"3600
CAA0 issue "letsencrypt.org"3600
CAA0 issue "ssl.com"3600
CAA0 issuewild "ssl.com"3600

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.
  • ✓ No wildcard #34
    Names that don't exist return NXDOMAIN.
  • ✓ CAA restricts issuance #35
    Certificates may be issued by: GoDaddy.com, amazon.com, comodoca.com, digicert.com, letsencrypt.org, ssl.com.