nextgov.com

Checked 22 October 2026, 10:02 UTC · via 8.8.8.8
!Passed with warnings
26 passed 2 warnings 0 failed 3 info

Registration

info

.com generic · Amazon Registrar, Inc. · expires 2027-09-19

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
Amazon Registrar, Inc.
Registered
19 September 2002
Last changed
15 August 2026
Expires
19 September 2027
Status
client transfer prohibited
Registry nameservers
ns1-04.azure-dns.com, ns2-04.azure-dns.net, ns3-04.azure-dns.org, ns4-04.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 2027-09-19 #3
    The registration is valid until 2027-09-19 (332 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

ns1-04.azure-dns.com, ns2-04.azure-dns.net, ns3-04.azure-dns.org, ns4-04.azure-dns.info

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
ns1-04.azure-dns.com, ns2-04.azure-dns.net, ns3-04.azure-dns.org, ns4-04.azure-dns.info
NS in the zone
ns1-04.azure-dns.com, ns2-04.azure-dns.net, ns3-04.azure-dns.org, ns4-04.azure-dns.info
NameserverAddressesNetwork (AS)Glue
ns1-04.azure-dns.com13.107.236.4 2603:1061:0:700::4AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation, US AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation, US13.107.236.4 2603:1061:0:700::4
ns2-04.azure-dns.net150.171.21.4 2620:1ec:8ec:700::4AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation, US AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation, US-
ns3-04.azure-dns.org204.14.183.4 2a01:111:4000:700::4AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation, US AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation, US-
ns4-04.azure-dns.info208.84.5.4 2620:1ec:bda:700::4AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation, US AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation, US-

Checks

  • ✓ 4 nameservers #6
    Delegated to ns1-04.azure-dns.com, ns2-04.azure-dns.net, ns3-04.azure-dns.org, ns4-04.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
ns1-04.azure-dns.com 13.107.236.4NOERROR, 4 ms, authoritativenoyes / yesrefused-
ns1-04.azure-dns.com 2603:1061:0:700::4NOERROR, 5 ms, authoritativenoyes / yesrefused-
ns2-04.azure-dns.net 150.171.21.4NOERROR, 5 ms, authoritativenoyes / yesrefused-
ns2-04.azure-dns.net 2620:1ec:8ec:700::4NOERROR, 5 ms, authoritativenoyes / yesrefused-
ns3-04.azure-dns.org 204.14.183.4NOERROR, 4 ms, authoritativenoyes / yesrefused-
ns3-04.azure-dns.org 2a01:111:4000:700::4NOERROR, 5 ms, authoritativenoyes / yesrefused-
ns4-04.azure-dns.info 208.84.5.4NOERROR, 4 ms, authoritativenoyes / yesrefusedKnot DNS 3.1.2.1770717641.d6b376aff
ns4-04.azure-dns.info 2620:1ec:bda:700::4NOERROR, 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: ns4-04.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 2019092068 · primary ns1-04.azure-dns.com

Found

Primary (MNAME)
ns1-04.azure-dns.com
Contact (RNAME)
premiumdns.support.neustar
Serial
2019092068
Refresh / retry
28800 s / 7200 s
Expire
1209600 s
Negative TTL
86400 s

Serial per nameserver

NameserverSerial
ns1-04.azure-dns.com (13.107.236.4)2019092068
ns1-04.azure-dns.com (2603:1061:0:700::4)2019092068
ns2-04.azure-dns.net (150.171.21.4)2019092068
ns2-04.azure-dns.net (2620:1ec:8ec:700::4)2019092068
ns3-04.azure-dns.org (204.14.183.4)2019092068
ns3-04.azure-dns.org (2a01:111:4000:700::4)2019092068
ns4-04.azure-dns.info (208.84.5.4)2019092068
ns4-04.azure-dns.info (2620:1ec:bda:700::4)2019092068

Checks

  • ✓ Serial 2019092068 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 8h, retry 2h, expire 14d, negative TTL 1d.
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns1-04.azure-dns.com is one of the listed nameservers.
  • ✓ Contact premiumdns@support.neustar #25
    The SOA RNAME premiumdns.support.neustar means premiumdns@support.neustar.
  • ✓ Date-based serial #26
    The serial 2019092068 follows the YYYYMMDDnn convention (2019-09-20).

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

info

19 records at the apex

Found

Read from
13.107.236.4:53
TypeValueTTL
SOAns1-04.azure-dns.com. premiumdns.support.neustar. 2019092068 28800 7200 1209600 8640086400
NSns1-04.azure-dns.com.86400
NSns2-04.azure-dns.net.86400
NSns3-04.azure-dns.org.86400
NSns4-04.azure-dns.info.86400
A20.119.16.43600
MX20 alt2.aspmx.l.google.com.300
MX20 alt1.aspmx.l.google.com.300
MX10 aspmx.l.google.com.300
MX30 aspmx2.googlemail.com.300
MX30 aspmx3.googlemail.com.300
TXT"_globalsign-domain-verification=R1bvWDvJUF1gpXlmc7Q3deFwpZciil5dpJR4t-a8XM"3600
TXT"facebook-domain-verification=bx8tnbheqofzl2hamrei8jgav86uu0"3600
TXT"v=spf1 include:_spf.google.com ~all"3600
TXT"google-site-verification=caSFhrha_x7MpuS_qTO3YEb66AExPasLWuaJArU1xgU"3600
TXT"google-site-verification=sU4CiaKdK14XUflOxq4hU70YyYEpQQu4_YhvpwWbH1E"3600
TXT"n6b9rhp0pcqg9ft6595hwbyq3ft3yq8f"3600
TXT"google-site-verification=3zJsQr4d87y-_rkcj3sdRlzHbN7N0Y6WyZZ47ipcRi0"3600
TXT"8s1bfx8yjkj3ydsyvn80xb3qfxw2gm1l"3600

Checks

  • ✓ TTLs within range #32
    TTLs: A 1h, MX 5m, NS 1d. The NS TTL at the parent is 2d and in the zone 1d; resolvers may use either.
  • ✓ 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