ifdesign.com

Checked 22 October 2026, 09:15 UTC · via 8.8.8.8
!Passed with warnings
29 passed 2 warnings 0 failed 4 info

Registration

info

.com generic · COREhub, S.R.L. · expires 2027-10-10

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
COREhub, S.R.L.
Registered
11 October 1995
Last changed
11 October 2026
Expires
10 October 2027
Status
client delete prohibited, client transfer prohibited
Registry nameservers
ns1-37.azure-dns.com, ns2-37.azure-dns.net, ns3-37.azure-dns.org, ns4-37.azure-dns.info
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 2027-10-10 #3
    The registration is valid until 2027-10-10 (352 days).
  • ✓ Transfer locked #4
    Registry status: client delete prohibited, client transfer prohibited.
  • ✓ Registry and delegation match #5
    The nameservers registered at the registry are the ones published in DNS.

Delegation

info

ns1-37.azure-dns.com, ns2-37.azure-dns.net, ns3-37.azure-dns.org, ns4-37.azure-dns.info

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
ns1-37.azure-dns.com, ns2-37.azure-dns.net, ns3-37.azure-dns.org, ns4-37.azure-dns.info
NS in the zone
ns1-37.azure-dns.com, ns2-37.azure-dns.net, ns3-37.azure-dns.org, ns4-37.azure-dns.info
NameserverAddressesNetwork (AS)Glue
ns1-37.azure-dns.com150.171.10.37 2603:1061:0:10::25AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation, US AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation, US150.171.10.37 2603:1061:0:10::25
ns2-37.azure-dns.net150.171.16.37 2620:1ec:8ec:10::25AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation, US AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation, US-
ns3-37.azure-dns.org13.107.222.37 2a01:111:4000:10::25AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation, US AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation, US-
ns4-37.azure-dns.info13.107.206.37 2620:1ec:bda:10::25AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation, US AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation, US-

Checks

  • ✓ 4 nameservers #6
    Delegated to ns1-37.azure-dns.com, ns2-37.azure-dns.net, ns3-37.azure-dns.org, ns4-37.azure-dns.info.
  • ✓ 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 (AS8075 (MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation, 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, .info, .net, .org.
  • ✓ All reachable over IPv6 #13
    Every nameserver has an IPv6 address.

Nameservers

warn

8 of 8 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns1-37.azure-dns.com 150.171.10.37NOERROR, 4 ms, authoritativenoyes / yesrefused-
ns1-37.azure-dns.com 2603:1061:0:10::25NOERROR, 5 ms, authoritativenoyes / yesrefused-
ns2-37.azure-dns.net 150.171.16.37NOERROR, 4 ms, authoritativenoyes / yesrefusedKnot DNS 3.1.2.1770717641.d6b376aff
ns2-37.azure-dns.net 2620:1ec:8ec:10::25NOERROR, 5 ms, authoritativenoyes / yesrefused-
ns3-37.azure-dns.org 13.107.222.37NOERROR, 4 ms, authoritativenoyes / yesrefused-
ns3-37.azure-dns.org 2a01:111:4000:10::25NOERROR, 4 ms, authoritativenoyes / yesrefused-
ns4-37.azure-dns.info 13.107.206.37NOERROR, 4 ms, authoritativenoyes / yesrefusedKnot DNS 3.1.2.1770717641.d6b376aff
ns4-37.azure-dns.info 2620:1ec:bda:10::25NOERROR, 5 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.
  • !
    Software version disclosed
    These nameservers report their software version via version.bind/version.server, which helps attackers find known vulnerabilities: ns2-37.azure-dns.net: "Knot DNS 3.1.2.1770717641.d6b376aff"; ns4-37.azure-dns.info: "Knot DNS 3.1.2.1770717641.d6b376aff". Hide or replace the version string.
    #17
  • ✓ 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 ns1-37.azure-dns.com

Found

Primary (MNAME)
ns1-37.azure-dns.com
Contact (RNAME)
azuredns-hostmaster.microsoft.com
Serial
1
Refresh / retry
3600 s / 300 s
Expire
2419200 s
Negative TTL
300 s

Serial per nameserver

NameserverSerial
ns1-37.azure-dns.com (150.171.10.37)1
ns1-37.azure-dns.com (2603:1061:0:10::25)1
ns2-37.azure-dns.net (150.171.16.37)1
ns2-37.azure-dns.net (2620:1ec:8ec:10::25)1
ns3-37.azure-dns.org (13.107.222.37)1
ns3-37.azure-dns.org (2a01:111:4000:10::25)1
ns4-37.azure-dns.info (13.107.206.37)1
ns4-37.azure-dns.info (2620:1ec:bda:10::25)1

Checks

  • ✓ Serial 1 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 1h, retry 5m, expire 28d, negative TTL 5m.
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns1-37.azure-dns.com is one of the listed nameservers.
  • ✓ Contact azuredns-hostmaster@microsoft.com #25
    The SOA RNAME azuredns-hostmaster.microsoft.com means azuredns-hostmaster@microsoft.com.
  • ✓ Counter serial #26
    The serial 1 is a plain counter.

DNSSEC

info

Signed, DS published at parent

Found

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

DS at the parent

Key tagAlgorithmDigestMatches a key
1599ECDSAP256SHA256 (13)SHA256 40C5E14AB223DE64…yes

DNSKEY in the zone

Key tagRoleAlgorithm
1599KSK (257)ECDSAP256SHA256 (13)
60224ZSK (256)ECDSAP256SHA256 (13)
53391ZSK (256)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 1599 (SHA256).
  • ✓ Modern algorithms #29
    Key algorithms: ECDSAP256SHA256 (13).
  • ✓ Short-lived signatures (online signing) #30
    Signatures are valid for 50h0m0s and created on demand; the current one was made at 2026-10-21 08:15 UTC and expires at 2026-10-23 10:15 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

16 records at the apex

Found

Read from
150.171.10.37:53
TypeValueTTL
SOAns1-37.azure-dns.com. azuredns-hostmaster.microsoft.com. 1 3600 300 2419200 3003600
NSns1-37.azure-dns.com.172800
NSns2-37.azure-dns.net.172800
NSns3-37.azure-dns.org.172800
NSns4-37.azure-dns.info.172800
A150.171.109.10060
AAAA2603:1061:14:63::160
MX0 ifdesign-com.mail.eo.outlook.com.3600
TXT"MS=ms68365785"3600
TXT"v=spf1 include:spf.protection.outlook.com include:_spf.senders.scnem.com include:maxbrain.com include:email.prnewswire.com -all"3600
TXT"f2hvm9tkkc196bad4as85jaqa5"3600
TXT"MS=ms15238903"3600
TXT"google-site-verification=IJvF31glRodLGS-mCrPQleLeCVDr1stHQ0ihXOQgW74"3600
TXT"ms-domain-verification=bd607226-2824-4889-ac80-98865d93fb5c"3600
TXT"apple-domain-verification=yjt5BQBnKFgGAzCE"3600
TXT"brevo-code:6ef1bdca0140128a0b0cdffd769c529f"3600

Checks

  • !
    Very low TTLs
    These records have a TTL below 5m, causing extra queries and slower lookups: A (1m), AAAA (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