northerntool.com

Checked 22 October 2026, 10:03 UTC · via 8.8.8.8
!Passed with warnings
22 passed 4 warnings 0 failed 5 info

Registration

info

.com generic · Network Solutions, LLC · expires 2034-09-01

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
Network Solutions, LLC
Registered
2 September 1998
Last changed
1 September 2024
Expires
1 September 2034
Status
client transfer prohibited
Registry nameservers
a.ns.northerntool.com, b.ns.northerntool.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 2034-09-01 #3
    The registration is valid until 2034-09-01 (2870 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

warn

a.ns.northerntool.com, b.ns.northerntool.com

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
a.ns.northerntool.com, b.ns.northerntool.com
NS in the zone
a.ns.northerntool.com, b.ns.northerntool.com, ns1.northerntool.com, ns2.northerntool.com, ns3.northerntool.com
NameserverAddressesNetwork (AS)Glue
a.ns.northerntool.com162.159.3.49 2400:cb00:2049:1::a29f:331AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US162.159.3.49
b.ns.northerntool.com162.159.4.24 2400:cb00:2049:1::a29f:418AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US162.159.4.24
ns1.northerntool.com (zone only)162.159.0.168 2400:cb00:2049:1::a29f:a8AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US-
ns2.northerntool.com (zone only)162.159.1.168 2400:cb00:2049:1::a29f:1a8AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US-
ns3.northerntool.com (zone only)162.159.2.71 2400:cb00:2049:1::a29f:247AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US-

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: a.ns.northerntool.com, b.ns.northerntool.com.
    #6
  • !
    NS sets differ
    The nameservers at the parent and in the zone should be the same. Only in the zone: ns1.northerntool.com, ns2.northerntool.com, ns3.northerntool.com. a.ns.northerntool.com, b.ns.northerntool.com, ns1.northerntool.com, ns2.northerntool.com, ns3.northerntool.com report NS a.ns.northerntool.com b.ns.northerntool.com ns1.northerntool.com ns2.northerntool.com ns3.northerntool.com.
    #7
  • !
    Glue differs from the zone
    The addresses at the parent (glue) differ from the addresses in the zone: a.ns.northerntool.com (glue 162.159.3.49, zone 162.159.3.49, 2400:cb00:2049:1::a29f:331); b.ns.northerntool.com (glue 162.159.4.24, zone 162.159.4.24, 2400:cb00:2049:1::a29f:418). Update the glue at your registrar.
    #8
  • ✓ All names resolve #9
    Every nameserver name has an address and is not an alias.
  • i
    One address family in one network
    all IPv6 addresses are in 2400:cb00:2049::/48, while the other address family is spread over several networks.
    #10
  • i
    All nameservers in one AS
    All nameserver addresses are announced by one network operator (AS13335 (CLOUDFLARENET - Cloudflare, Inc., US): 10 addresses). An outage or attack on that network affects all nameservers; large anycast providers mitigate this, but a secondary DNS provider adds independence.
    #11
  • i
    All nameserver names under .com
    All nameserver names are under one TLD, so a problem with that TLD also makes the nameservers unreachable. Some operators use names under two TLDs for extra resilience.
    #12
  • ✓ All reachable over IPv6 #13
    Every nameserver has an IPv6 address.

Nameservers

warn

10 of 10 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
a.ns.northerntool.com 162.159.3.49NOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
a.ns.northerntool.com 2400:cb00:2049:1::a29f:331NOERROR, 16 ms, authoritativenoyes / yesrefused2026.10.2
b.ns.northerntool.com 162.159.4.24NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
b.ns.northerntool.com 2400:cb00:2049:1::a29f:418NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
ns1.northerntool.com 162.159.0.168NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
ns1.northerntool.com 2400:cb00:2049:1::a29f:a8NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
ns2.northerntool.com 162.159.1.168NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
ns2.northerntool.com 2400:cb00:2049:1::a29f:1a8NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
ns3.northerntool.com 162.159.2.71NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
ns3.northerntool.com 2400:cb00:2049:1::a29f:247NOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2

Checks

  • ✓ All respond #14
    All 10 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: a.ns.northerntool.com: "2026.10.2"; b.ns.northerntool.com: "2026.10.2"; ns1.northerntool.com: "2026.10.2"; ns2.northerntool.com: "2026.10.2"; ns3.northerntool.com: "2026.10.2". 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 2417063115 · primary ns1.northerntool.com

Found

Primary (MNAME)
ns1.northerntool.com
Contact (RNAME)
dns.cloudflare.com
Serial
2417063115
Refresh / retry
10000 s / 2400 s
Expire
604800 s
Negative TTL
1800 s

Serial per nameserver

NameserverSerial
a.ns.northerntool.com (162.159.3.49)2417063115
a.ns.northerntool.com (2400:cb00:2049:1::a29f:331)2417063115
b.ns.northerntool.com (162.159.4.24)2417063115
b.ns.northerntool.com (2400:cb00:2049:1::a29f:418)2417063115
ns1.northerntool.com (162.159.0.168)2417063115
ns1.northerntool.com (2400:cb00:2049:1::a29f:a8)2417063115
ns2.northerntool.com (162.159.1.168)2417063115
ns2.northerntool.com (2400:cb00:2049:1::a29f:1a8)2417063115
ns3.northerntool.com (162.159.2.71)2417063115
ns3.northerntool.com (2400:cb00:2049:1::a29f:247)2417063115

Checks

  • ✓ Serial 2417063115 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 2h46m40s, retry 40m, expire 7d, negative TTL 30m.
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns1.northerntool.com is one of the listed nameservers.
  • ✓ Contact dns@cloudflare.com #25
    The SOA RNAME dns.cloudflare.com means dns@cloudflare.com.
  • ✓ Timestamp serial #26
    The serial 2417063115 is a Unix timestamp (2046-08-05 06:25 UTC).

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

37 records at the apex

Found

Read from
162.159.3.49:53
TypeValueTTL
SOAns1.northerntool.com. dns.cloudflare.com. 2417063115 10000 2400 604800 18001800
NSns1.northerntool.com.86400
NSns2.northerntool.com.86400
NSns3.northerntool.com.86400
NSa.ns.northerntool.com.86400
NSb.ns.northerntool.com.86400
A104.16.219.245300
A104.16.218.245300
AAAA2606:4700::6810:daf5300
AAAA2606:4700::6810:dbf5300
MX10 us-smtp-inbound-1.mimecast.com.300
MX10 us-smtp-inbound-2.mimecast.com.300
TXT"0ed1fe018a1115a96fa4be4365adcd25d303d26d61"300
TXT"M0O2X32546"300
TXT"MS=ms45681351"300
TXT"_84wnke6xxjagexapftojkmgpqickedu"300
TXT"apple-domain-verification=J6qeiwbLL3uPrqKf"300
TXT"f297ca60342498316a038d00d90395e4fc3ba6b89dd630b83f"300
TXT"google-site-verification=7WKOvmZspWrUHyAOK_baBbTqV2ByuiaF6ERsomyH6Kg"300
TXT"google-site-verification=7nsRxNLNuYnMoAMx3ErFy-fiHiqIeGih7ZnRLrhUbqc"300
TXT"google-site-verification=IggriU53DuNAEUm3yagyqjNDYVby_ar-7OntTjQikac"300
TXT"safetyculture-domain-verification=b15bdca3-0975-40a4-acee-20a3f830b129"300
TXT"teamviewer-sso-verification=a93fe95d245c484aa9b37e2ab2f67b64"300
TXT"v=spf1 mx a ip4:63.225.137.0/24 ip4:70.42.153.0/24 ip4:208.89.13.0/20 ip4:20.106.12.195/32 ip4:52.189.71.243/32 ip4:23.251.237.159/32 ip4:23.251.237.160/29 ip4:23.251.237.168/30 ip4:20.112.209.83/32 ip4:20.37.136.59/32 ip4:52.177.236.102/32 ip4:20.98.178." "71 ip4:20.186.227.196 ip4:20.75.56.221 ip4:104.152.224.62 include:us._netblocks.mimecast.com include:spf.protection.outlook.com include:spf.gomoxie.cloud include:df3f79.workshop-spf.net -all"300
TXT"vrWhCZAjUAP6devkM8W5Ps0IJKHGjMZFzBPXXAMBG/kJuJoj+jgtHx6AQUBD/MYnMkvrlKgdjHje6wBowuJ69A=="300
CAA0 iodef "mailto:ssl-certs@northerntool.com"300
CAA0 issue "amazontrust.com"300
CAA0 issue "comodoca.com"300
CAA0 issue "digicert.com; cansignhttpexchanges=yes"300
CAA0 issue "letsencrypt.org"300
CAA0 issue "pki.goog; cansignhttpexchanges=yes"300
CAA0 issue "ssl.com"300
CAA0 issuewild "comodoca.com"300
CAA0 issuewild "digicert.com; cansignhttpexchanges=yes"300
CAA0 issuewild "letsencrypt.org"300
CAA0 issuewild "pki.goog; cansignhttpexchanges=yes"300
CAA0 issuewild "ssl.com"300

Checks

  • ✓ TTLs within range #32
    TTLs: A 5m, AAAA 5m, 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.
  • ✓ CAA restricts issuance #35
    Certificates may be issued by: amazontrust.com, comodoca.com, digicert.com, letsencrypt.org, pki.goog, ssl.com.