sysdig.com

Checked 22 October 2026, 10:53 UTC · via 8.8.8.8
!Passed with warnings
26 passed 2 warnings 0 failed 3 info

Registration

info

.com generic · Gandi SAS · expires 2029-03-03

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
Gandi SAS
Registered
3 March 2009
Last changed
30 January 2026
Expires
3 March 2029
Status
client transfer prohibited
Registry nameservers
ns-1113.awsdns-11.org, ns-1687.awsdns-18.co.uk, ns-461.awsdns-57.com, ns-843.awsdns-41.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 2029-03-03 #3
    The registration is valid until 2029-03-03 (862 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-1113.awsdns-11.org, ns-1687.awsdns-18.co.uk, ns-461.awsdns-57.com, ns-843.awsdns-41.net

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
ns-1113.awsdns-11.org, ns-1687.awsdns-18.co.uk, ns-461.awsdns-57.com, ns-843.awsdns-41.net
NS in the zone
ns-1113.awsdns-11.org, ns-1687.awsdns-18.co.uk, ns-461.awsdns-57.com, ns-843.awsdns-41.net
NameserverAddressesNetwork (AS)Glue
ns-1113.awsdns-11.org205.251.196.89 2600:9000:5304:5900::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US-
ns-1687.awsdns-18.co.uk205.251.198.151 2600:9000:5306:9700::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US-
ns-461.awsdns-57.com205.251.193.205 2600:9000:5301:cd00::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US205.251.193.205 2600:9000:5301:cd00::1
ns-843.awsdns-41.net205.251.195.75 2600:9000:5303:4b00::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US-

Checks

  • ✓ 4 nameservers #6
    Delegated to ns-1113.awsdns-11.org, ns-1687.awsdns-18.co.uk, ns-461.awsdns-57.com, ns-843.awsdns-41.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-1113.awsdns-11.org 205.251.196.89NOERROR, 3 ms, authoritativenoyes / yesrefused-
ns-1113.awsdns-11.org 2600:9000:5304:5900::1NOERROR, 5 ms, authoritativenoyes / yesrefused-
ns-1687.awsdns-18.co.uk 205.251.198.151NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns-1687.awsdns-18.co.uk 2600:9000:5306:9700::1NOERROR, 10 ms, authoritativenoyes / yesrefused-
ns-461.awsdns-57.com 205.251.193.205NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns-461.awsdns-57.com 2600:9000:5301:cd00::1NOERROR, 10 ms, authoritativenoyes / yesrefused-
ns-843.awsdns-41.net 205.251.195.75NOERROR, 3 ms, authoritativenoyes / yesrefused-
ns-843.awsdns-41.net 2600:9000:5303:4b00::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-1687.awsdns-18.co.uk

Found

Primary (MNAME)
ns-1687.awsdns-18.co.uk
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-1113.awsdns-11.org (205.251.196.89)1
ns-1113.awsdns-11.org (2600:9000:5304:5900::1)1
ns-1687.awsdns-18.co.uk (205.251.198.151)1
ns-1687.awsdns-18.co.uk (2600:9000:5306:9700::1)1
ns-461.awsdns-57.com (205.251.193.205)1
ns-461.awsdns-57.com (2600:9000:5301:cd00::1)1
ns-843.awsdns-41.net (205.251.195.75)1
ns-843.awsdns-41.net (2600:9000:5303:4b00::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-1687.awsdns-18.co.uk 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

45 records at the apex

Found

Read from
205.251.196.89:53
TypeValueTTL
SOAns-1687.awsdns-18.co.uk. awsdns-hostmaster.amazon.com. 1 7200 900 1209600 86400900
NSns-1113.awsdns-11.org.172800
NSns-1687.awsdns-18.co.uk.172800
NSns-461.awsdns-57.com.172800
NSns-843.awsdns-41.net.172800
A18.245.31.2860
A18.245.31.7060
A18.245.31.1960
A18.245.31.12460
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"3380D2AC3B"86400
TXT"MS=ms67425343"86400
TXT"ZOOM_verify_mYQ-F0NASAmiEhqr3n_UUA"86400
TXT"adobe-idp-site-verification=8741b072200688873447ba5986a275dce09ab1f38fc46d4f345457c5d7e301e6"86400
TXT"apple-domain-verification=VK9ngd2wDng9V2Nh"86400
TXT"asv=9111f5685d3455ed78ba706ecebef798"86400
TXT"atlassian-domain-verification=pMErTumx5FFIzaSQ3Mi7dpo37jMpYiUd1Lb7eFMA9DG7mu3WFtv9IoKPnIiJ7sRg"86400
TXT"canva-site-verification=rQK943Y0iRNvj6iu-uBBQw"86400
TXT"cisco-ci-domain-verification=2288653e9232ba2a5fadd0ceb2364b6fa89bfaa2fdfb106de4fef24880efce40"86400
TXT"google-site-verification=YmyPsYFBTTUB1QhDGBfPDokC43Bb_NLWQc3Q6g8S0M4"86400
TXT"google-site-verification=fsc4FLmG9fdVSEyAfCPqRS9lEgvrFphCj9OWIwKQCCk"86400
TXT"google-site-verification=uqwLSIozDaFEKwHfEbOB5tn_QMRKW_jl_nahJcowzgg"86400
TXT"loom-site-verification=9839b08c163f4969b4ef1b7a935f6db7"86400
TXT"miro-verification=0ba0c925ecc105f61cd7a8242eb68fe3f8a4ccf3"86400
TXT"mongodb-site-verification=9xljySw7L8phMeBVv9KQgnocM6PfLOYx"86400
TXT"openai-domain-verification=dv-uUwUIWP4efWyeGDb0b4skHll"86400
TXT"parallels-domain-verification=1accaf4ab7b54bcfa27db59d4cfef742419f3345671d4a61896cd4551c4f8ca4"86400
TXT"pendo-domain-verification=e571e971-273e-4008-a440-b0a1f5e32372"86400
TXT"remote-domain-verification=dfe901fc-254e-405f-997e-612f96ddb04a"86400
TXT"segment-site-verification=Ls3FcAxOSsiRVVhjJN8Hsw8yArmA5n5R"86400
TXT"v=spf1 include:amazonses.com include:_spf.google.com include:mktomail.com include:_spf.salesforce.com include:mail-spf.devrev.ai include:spf.mptx.jp ip4:23.21.109.197 ip4:23.21.109.212 ip4:147.160.167.0/26 ~all"86400
TXT"zapier-domain-verification-challenge=f9cfa4e1-46b4-44af-af7e-c6ff3d5fe158"86400
TXT"zoho-verification=zb31577883.zmverify.zoho.com"86400
CAA0 issue "amazon.com"300
CAA0 issue "comodoca.com"300
CAA0 issue "digicert.com"300
CAA0 issue "letsencrypt.org"300
CAA0 issue "pki.goog"300
CAA0 issue "ssl.com"300
CAA0 issuewild "comodoca.com"300
CAA0 issuewild "letsencrypt.org"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
  • ✓ CAA restricts issuance #35
    Certificates may be issued by: amazon.com, comodoca.com, digicert.com, letsencrypt.org, pki.goog, ssl.com.