windowsazure.com

Checked 22 October 2026, 11:31 UTC · via 8.8.8.8
!Passed with warnings
27 passed 2 warnings 0 failed 2 info

Registration

info

.com generic · MarkMonitor Inc. · expires 2027-09-03

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
MarkMonitor Inc.
Registered
3 September 2008
Last changed
2 August 2026
Expires
3 September 2027
Status
client delete prohibited, client transfer prohibited, client update prohibited, server delete prohibited, server transfer prohibited, server update prohibited
Registry nameservers
ns1-205.azure-dns.com, ns2-205.azure-dns.net, ns3-205.azure-dns.org, ns4-205.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 2027-09-03 #3
    The registration is valid until 2027-09-03 (316 days).
  • ✓ Transfer locked #4
    Registry status: client delete prohibited, client transfer prohibited, client update prohibited, server delete prohibited, server transfer prohibited, server update prohibited.
  • ✓ Registry and delegation match #5
    The nameservers registered at the registry are the ones published in DNS.

Delegation

info

ns1-205.azure-dns.com, ns2-205.azure-dns.net, ns3-205.azure-dns.org, ns4-205.azure-dns.info

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
ns1-205.azure-dns.com, ns2-205.azure-dns.net, ns3-205.azure-dns.org, ns4-205.azure-dns.info
NS in the zone
ns1-205.azure-dns.com, ns2-205.azure-dns.net, ns3-205.azure-dns.org, ns4-205.azure-dns.info
NameserverAddressesNetwork (AS)Glue
ns1-205.azure-dns.com13.107.236.205 2603:1061:0:700::cdAS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation, US AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation, US13.107.236.205 2603:1061:0:700::cd
ns2-205.azure-dns.net150.171.21.205 2620:1ec:8ec:700::cdAS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation, US AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation, US-
ns3-205.azure-dns.org204.14.183.205 2a01:111:4000:700::cdAS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation, US AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation, US-
ns4-205.azure-dns.info208.84.5.205 2620:1ec:bda:700::cdAS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation, US AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation, US-

Checks

  • ✓ 4 nameservers #6
    Delegated to ns1-205.azure-dns.com, ns2-205.azure-dns.net, ns3-205.azure-dns.org, ns4-205.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
ns1-205.azure-dns.com 13.107.236.205NOERROR, 4 ms, authoritativenoyes / yesrefused-
ns1-205.azure-dns.com 2603:1061:0:700::cdNOERROR, 4 ms, authoritativenoyes / yesrefused-
ns2-205.azure-dns.net 150.171.21.205NOERROR, 4 ms, authoritativenoyes / yesrefused-
ns2-205.azure-dns.net 2620:1ec:8ec:700::cdNOERROR, 4 ms, authoritativenoyes / yesrefused-
ns3-205.azure-dns.org 204.14.183.205NOERROR, 4 ms, authoritativenoyes / yesrefused-
ns3-205.azure-dns.org 2a01:111:4000:700::cdNOERROR, 4 ms, authoritativenoyes / yesrefused-
ns4-205.azure-dns.info 208.84.5.205NOERROR, 4 ms, authoritativenoyes / yesrefusedKnot DNS 3.1.2.1770717641.d6b376aff
ns4-205.azure-dns.info 2620:1ec:bda:700::cdNOERROR, 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.
  • !
    Software version disclosed
    These nameservers report their software version via version.bind/version.server, which helps attackers find known vulnerabilities: ns4-205.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 ns1-205.azure-dns.com

Found

Primary (MNAME)
ns1-205.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
ns1-205.azure-dns.com (13.107.236.205)1
ns1-205.azure-dns.com (2603:1061:0:700::cd)1
ns2-205.azure-dns.net (150.171.21.205)1
ns2-205.azure-dns.net (2620:1ec:8ec:700::cd)1
ns3-205.azure-dns.org (204.14.183.205)1
ns3-205.azure-dns.org (2a01:111:4000:700::cd)1
ns4-205.azure-dns.info (208.84.5.205)1
ns4-205.azure-dns.info (2620:1ec:bda:700::cd)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 ns1-205.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

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

pass

29 records at the apex

Found

Read from
13.107.236.205:53
TypeValueTTL
SOAns1-205.azure-dns.com. azuredns-hostmaster.microsoft.com. 1 3600 300 2419200 3003600
NSns1-205.azure-dns.com.172800
NSns2-205.azure-dns.net.172800
NSns3-205.azure-dns.org.172800
NSns4-205.azure-dns.info.172800
A20.112.250.1333600
A20.231.239.2463600
A20.76.201.1713600
A20.70.246.203600
A20.236.44.1623600
TXT"v=spf1 include:_spf-ssg-a.microsoft.com -all"3600
TXT"google-site-verification=IxTcjZGG00SOzDZA0P1SyTQMf53lVfV2Yzy5YiGe1QI"3600
TXT"wrike-verification=MjYyNDA4OTpiZGQyZDZhOTZmNDIzYjhlMDgzNzlhZDlhYjRkNzMyNzVjYTRlODQ0MjEzYjEzNzExN2I3ZWRkOThiYTlhNDE5"3600
TXT"zapier-domain-verification-challenge=185f9c04-fa52-4c71-bbf6-2dbe5bffdc74"3600
TXT"apple-domain-verification=Ta3fUc5lm0WmCDb0"3600
TXT"apple-domain-verification=9HVRZpQM7igQ424X"3600
TXT"acom-vanity-router-prod-aue-01.azurewebsites.net"3600
TXT"acom-vanity-router-prod-brs-01.azurewebsites.net"3600
TXT"acom-vanity-router-prod-eus-01.azurewebsites.net"3600
TXT"acom-vanity-router-prod-eus-01-staging.azurewebsites.net"3600
TXT"acom-vanity-router-prod-jaw-01.azurewebsites.net"3600
TXT"acom-vanity-router-prod-jaw-01-staging.azurewebsites.net"3600
TXT"acom-vanity-router-prod-seas-01.azurewebsites.net"3600
TXT"acom-vanity-router-prod-seas-01-staging.azurewebsites.net"3600
TXT"acom-vanity-router-prod-weu-01.azurewebsites.net"3600
TXT"acom-vanity-router-prod-weu-01-staging.azurewebsites.net"3600
TXT"acom-vanity-router-prod-wus-01.azurewebsites.net"3600
TXT"acom-vanity-router-prod-wus-01-staging.azurewebsites.net"3600
CAA0 contactemail "caarecordaware@microsoft.com"3600

Checks

  • ✓ TTLs within range #32
    TTLs: A 1h, NS 2d.
  • ✓ 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: .