idc.com

Checked 22 October 2026, 09:15 UTC · via 8.8.8.8
!Passed with warnings
26 passed 2 warnings 0 failed 3 info

Registration

info

.com generic · MarkMonitor Inc. · expires 2027-07-07

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
MarkMonitor Inc.
Registered
8 July 1997
Last changed
5 June 2026
Expires
7 July 2027
Status
client delete prohibited, client transfer prohibited, client update prohibited
Registry nameservers
ns-1020.awsdns-63.net, ns-1486.awsdns-57.org, ns-1821.awsdns-35.co.uk, ns-376.awsdns-47.com
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 2027-07-07 #3
    The registration is valid until 2027-07-07 (257 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-1020.awsdns-63.net, ns-1486.awsdns-57.org, ns-1821.awsdns-35.co.uk, ns-376.awsdns-47.com

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
ns-1020.awsdns-63.net, ns-1486.awsdns-57.org, ns-1821.awsdns-35.co.uk, ns-376.awsdns-47.com
NS in the zone
ns-1020.awsdns-63.net, ns-1486.awsdns-57.org, ns-1821.awsdns-35.co.uk, ns-376.awsdns-47.com
NameserverAddressesNetwork (AS)Glue
ns-1020.awsdns-63.net205.251.195.252 2600:9000:5303:fc00::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US-
ns-1486.awsdns-57.org205.251.197.206 2600:9000:5305:ce00::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US-
ns-1821.awsdns-35.co.uk205.251.199.29 2600:9000:5307:1d00::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US-
ns-376.awsdns-47.com205.251.193.120 2600:9000:5301:7800::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US205.251.193.120 2600:9000:5301:7800::1

Checks

  • ✓ 4 nameservers #6
    Delegated to ns-1020.awsdns-63.net, ns-1486.awsdns-57.org, ns-1821.awsdns-35.co.uk, ns-376.awsdns-47.com.
  • ✓ 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-1020.awsdns-63.net 205.251.195.252NOERROR, 3 ms, authoritativenoyes / yesrefused-
ns-1020.awsdns-63.net 2600:9000:5303:fc00::1NOERROR, 8 ms, authoritativenoyes / yesrefused-
ns-1486.awsdns-57.org 205.251.197.206NOERROR, 3 ms, authoritativenoyes / yesrefused-
ns-1486.awsdns-57.org 2600:9000:5305:ce00::1NOERROR, 4 ms, authoritativenoyes / yesrefused-
ns-1821.awsdns-35.co.uk 205.251.199.29NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns-1821.awsdns-35.co.uk 2600:9000:5307:1d00::1NOERROR, 13 ms, authoritativenoyes / yesrefused-
ns-376.awsdns-47.com 205.251.193.120NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns-376.awsdns-47.com 2600:9000:5301:7800::1NOERROR, 9 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-376.awsdns-47.com

Found

Primary (MNAME)
ns-376.awsdns-47.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-1020.awsdns-63.net (205.251.195.252)1
ns-1020.awsdns-63.net (2600:9000:5303:fc00::1)1
ns-1486.awsdns-57.org (205.251.197.206)1
ns-1486.awsdns-57.org (2600:9000:5305:ce00::1)1
ns-1821.awsdns-35.co.uk (205.251.199.29)1
ns-1821.awsdns-35.co.uk (2600:9000:5307:1d00::1)1
ns-376.awsdns-47.com (205.251.193.120)1
ns-376.awsdns-47.com (2600:9000:5301:7800::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-376.awsdns-47.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

warn

34 records at the apex

Found

Read from
205.251.195.252:53
TypeValueTTL
SOAns-376.awsdns-47.com. awsdns-hostmaster.amazon.com. 1 7200 900 1209600 86400900
NSns-1020.awsdns-63.net.172800
NSns-1486.awsdns-57.org.172800
NSns-1821.awsdns-35.co.uk.172800
NSns-376.awsdns-47.com.172800
A192.0.66.12960
MX10 idc-com.mail.protection.outlook.com.300
TXT"6d6e8b5f-2b19-4b0a-879e-7b75340203ce"300
TXT"SFMC-BkzH9VL9Wt6Qd_tbGKho6ZP2bIGwvdlI3kgmnBs2"300
TXT"SFMC-ZFYEN_-E3lDIaXrj6Y2gpU3J1Xm76V9Oh-n_l9qC"300
TXT"SFMC-lYr49ziWZVySzut0bDqdNj4_cM4kps0hJimYmdPy"300
TXT"adobe-idp-site-verification=6d8e5080b896d3b561b273ab5de1b361e5c95cded1a01d6ac20b6953257fdf14"300
TXT"anthropic-domain-verification-7nrbq8=LPJWTuGmCDPlFX2Zjsn2hTCBE"300
TXT"atlassian-domain-verification=OgMkscBLxaedWxvOpudpOs7V8IcoptPHKVsL32r4xvdDyzMF/lOlYzBQ0t1aiTCD"300
TXT"atlassian-sending-domain-verification=37518c07-3566-4f87-b5b8-c21e823b5d6c"300
TXT"beautifulai-site-verification=d664beb1-10fb-4783-a4c0-7fa8bc7b711c"300
TXT"canva-site-verification=yg-xWt0H-iqD9zuT2J5ycw"300
TXT"docusign=588df1b5-9825-42f1-aa93-1ea221867bf5"300
TXT"figma-domain-verification=fc832aaeb526a5845ac439dbf4a77f216f8a3967f779d4bc6d56cf2e268f8f9b-1743765650"300
TXT"google-site-verification=5HbooOhirDDTpivEEuweJetr8AuF_GsZZkCSSFSiF5Q"300
TXT"google-site-verification=rkkScVsMpuqXatGMagMm159evJOXO3CrWnXxU0DsG28"300
TXT"jamf-site-verification=sW5qhhYD7Pb4HTn4soz2Tw"300
TXT"knowbe4-site-verification=d3f99773308e74aca24e3c867c088358"300
TXT"mgverify=b3837f3d533795011bda74e0818813b43e19fed5e39c278be93b1fe599fb71eb"300
TXT"onetrust-domain-verification=cc0345893aad4f9fa7dbb40bff8ad0dc"300
TXT"openai-domain-verification=dv-vavK03qneGObYLq086JMkK6c"300
TXT"pendo-domain-verification=tJolXCg5xU5O1VXgXATA6vaXDCI"300
TXT"perplexity-ai-domain-verification-146h1k=phkgputFr9GQMCEmeWGLMf8HH"300
TXT"pexip-ms-tenant-domain-verification=5cc89ccd-1cc1-4485-bf6d-48aa384d1660"300
TXT"slack-domain-verification=C4khAQa9sYT4K73ZDAXAYciBaEGIGFH6hI6536l0"300
TXT"smartsheet-site-validation=F7o9K6RFqn17jfGDLXxU2fi5mBc1MZ7S"300
TXT"sprout-social-ec573070-635f-40fc-b268-c020787bb1c6"300
TXT"v=spf1 include:_u.idc.com._spf.dmarcly.com include:spf.protection.outlook.com -all"300
TXT"wrike-verification=MzEyODc4OmUzYzdiNDRiMzg1ZDNkYjdmYjdiOTJiODNkOWU1OWRiM2ViM2UxOTNhOTY2NDFlZGMyZWRlZmMwZWIwOGVmYTU="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.
  • ✓ No wildcard #34
    Names that don't exist return NXDOMAIN.
  • 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