smartrecruiters.com

Checked 22 October 2026, 10:44 UTC · via 8.8.8.8
!Passed with warnings
31 passed 1 warning 0 failed 3 info

Registration

info

.com generic · GoDaddy.com, LLC · expires 2027-11-10

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
GoDaddy.com, LLC
Registered
20 November 2005
Last changed
8 December 2025
Expires
10 November 2027
Status
client delete prohibited, client renew prohibited, client transfer prohibited, client update prohibited
Registry nameservers
ns-1508.awsdns-60.org, ns-1909.awsdns-46.co.uk, ns-216.awsdns-27.com, ns-770.awsdns-32.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 2027-11-10 #3
    The registration is valid until 2027-11-10 (384 days).
  • ✓ 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

info

ns-1508.awsdns-60.org, ns-1909.awsdns-46.co.uk, ns-216.awsdns-27.com, ns-770.awsdns-32.net

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
ns-1508.awsdns-60.org, ns-1909.awsdns-46.co.uk, ns-216.awsdns-27.com, ns-770.awsdns-32.net
NS in the zone
ns-1508.awsdns-60.org, ns-1909.awsdns-46.co.uk, ns-216.awsdns-27.com, ns-770.awsdns-32.net
NameserverAddressesNetwork (AS)Glue
ns-1508.awsdns-60.org205.251.197.228 2600:9000:5305:e400::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US-
ns-1909.awsdns-46.co.uk205.251.199.117 2600:9000:5307:7500::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US-
ns-216.awsdns-27.com205.251.192.216 2600:9000:5300:d800::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US205.251.192.216 2600:9000:5300:d800::1
ns-770.awsdns-32.net205.251.195.2 2600:9000:5303:200::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US-

Checks

  • ✓ 4 nameservers #6
    Delegated to ns-1508.awsdns-60.org, ns-1909.awsdns-46.co.uk, ns-216.awsdns-27.com, ns-770.awsdns-32.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-1508.awsdns-60.org 205.251.197.228NOERROR, 3 ms, authoritativenoyes / yesrefused-
ns-1508.awsdns-60.org 2600:9000:5305:e400::1NOERROR, 4 ms, authoritativenoyes / yesrefused-
ns-1909.awsdns-46.co.uk 205.251.199.117NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns-1909.awsdns-46.co.uk 2600:9000:5307:7500::1NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns-216.awsdns-27.com 205.251.192.216NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns-216.awsdns-27.com 2600:9000:5300:d800::1NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns-770.awsdns-32.net 205.251.195.2NOERROR, 4 ms, authoritativenoyes / yesrefused-
ns-770.awsdns-32.net 2600:9000:5303:200::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 2 · primary ns-770.awsdns-32.net

Found

Primary (MNAME)
ns-770.awsdns-32.net
Contact (RNAME)
awsdns-hostmaster.amazon.com
Serial
2
Refresh / retry
7200 s / 900 s
Expire
1209600 s
Negative TTL
86400 s

Serial per nameserver

NameserverSerial
ns-1508.awsdns-60.org (205.251.197.228)2
ns-1508.awsdns-60.org (2600:9000:5305:e400::1)2
ns-1909.awsdns-46.co.uk (205.251.199.117)2
ns-1909.awsdns-46.co.uk (2600:9000:5307:7500::1)2
ns-216.awsdns-27.com (205.251.192.216)2
ns-216.awsdns-27.com (2600:9000:5300:d800::1)2
ns-770.awsdns-32.net (205.251.195.2)2
ns-770.awsdns-32.net (2600:9000:5303:200::1)2

Checks

  • ✓ Serial 2 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-770.awsdns-32.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 2 is a plain counter.

DNSSEC

info

Signed, DS published at parent

Found

Validated by resolver
yes
Denial of existence
NSEC
Signatures valid until
22 October 2026

DS at the parent

Key tagAlgorithmDigestMatches a key
14916ECDSAP256SHA256 (13)SHA256 7F6DAF77D208D472…yes

DNSKEY in the zone

Key tagRoleAlgorithm
2331ZSK (256)ECDSAP256SHA256 (13)
24092ZSK (256)ECDSAP256SHA256 (13)
14916KSK (257)ECDSAP256SHA256 (13)

Checks

  • ✓ Signed and validated #27
    The zone is signed, the parent publishes a DS record, and the resolver validates the answers.
  • ✓ DS matches a key #28
    The DS record at the parent matches a key in the zone: key tag 14916 (SHA256).
  • ✓ Modern algorithms #29
    Key algorithms: ECDSAP256SHA256 (13).
  • ✓ Short-lived signatures (online signing) #30
    Signatures are valid for 2h0m0s and created on demand; the current one was made at 2026-10-22 09:44 UTC and expires at 2026-10-22 11:59 UTC.
  • i
    NSEC
    The zone uses NSEC, so its full contents can be listed by walking the NSEC chain. That is fine unless the names are sensitive.
    #31

Records

warn

40 records at the apex

Found

Read from
205.251.197.228:53
TypeValueTTL
SOAns-770.awsdns-32.net. awsdns-hostmaster.amazon.com. 2 7200 900 1209600 86400900
NSns-1508.awsdns-60.org.300
NSns-1909.awsdns-46.co.uk.300
NSns-216.awsdns-27.com.300
NSns-770.awsdns-32.net.300
A63.184.211.24660
A3.127.46.12160
MX1 aspmx.l.google.com.3600
MX10 alt3.aspmx.l.google.com.3600
MX10 alt4.aspmx.l.google.com.3600
MX5 alt1.aspmx.l.google.com.3600
MX5 alt2.aspmx.l.google.com.3600
TXT"MS=ms72473879"300
TXT"anthropic-domain-verification-v9dy58=qHvaoc8tOYsTdqPFoBi1dzr6g"300
TXT"atlassian-domain-verification=3emg83b8HamIoBopGRfUw1F8harnDZ9RabKSZ6NBFSTQL3yh2HuSJRnabwxmfFd/"300
TXT"cursor-domain-verification-yvhq1p=Mxvc15ppT7ksNyEWMkZ1NFqPF"300
TXT"docusign=4d1f7eb5-ad5e-4b55-b3f3-06d61706831e"300
TXT"docusign=9ab265d9-c042-42c7-8b0b-7a75bede8fb3"300
TXT"ds=f3ac3c4c-073a-4509-932c-fc65f11fa182"300
TXT"facebook-domain-verification=u3tg93sfdfd9ootzctgso9znpror8p"300
TXT"globalsign-domain-verification=25D1206593D201ABA34B52E835939B02"300
TXT"google-site-verification=AdhlKDn2ZMYliaHR8PgpPAEVs7o0BrAJ4m2XybY9Rhg"300
TXT"google-site-verification=OcmgCUQWAfZ1PJRsB4Bqweq75ms-zffrf-X0SeeL0eg"300
TXT"google-site-verification=metvp8BQg5Bvid2EUwqQqnrNq96F_MalydxyP1ljK_U"300
TXT"loom-verification=343518718"300
TXT"miro-verification=c4de28335a2edc1ba08006cf966ecc2d88954d2b"300
TXT"onetrust-domain-verification=8fe1e18bdafd48e981cc7edca5e9075a"300
TXT"status-page-domain-verification=fdg9x3kb6cv3"300
TXT"stripe-verification=852dfebd3d7eaa19500d5acb3f4c996f2d3d60d97e9af0d0bc936daedab2cdbd"300
TXT"stripe-verification=9956966b5ba84437ed5c7a04d8337020c098c55287dc3d6dc0fc65a893cdbea5"300
TXT"twilio-domain-verification=2dbb83b62c9d9b09317d15cff0cfffea"300
TXT"v=spf1 mx include:_spf.google.com include:sendgrid.net exists:%{i}._spf.mta.salesforce.com include:mktomail.com ip4:199.15.212.1 ip4:199.15.215.254 include:_spf.eu.mailgun.org -all"300
TXT"zoom-domain-verification = ZOOM_verify_56d310540a1b437381ac7d212c3f864c"300
TXT"zoom-domain-verification = bdfb3515-c978-470e-93a9-ea7d03ff33ab"300
CAA0 iodef "mailto:caa@smartrecruiters.com"300
CAA0 issue "amazon.com"300
CAA0 issue "digicert.com"300
CAA0 issue "letsencrypt.org"300
CAA0 issue "pki.goog"300
CAA0 issue "sectigo.com"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. The NS TTL at the parent is 2d and in the zone 5m; resolvers may use either.
    #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: amazon.com, digicert.com, letsencrypt.org, pki.goog, sectigo.com.