nationbuilder.com

Checked 22 October 2026, 10:00 UTC · via 8.8.8.8
!Passed with warnings
22 passed 3 warnings 0 failed 6 info

Registration

info

.com generic · NameCheap, Inc. · expires 2027-09-07

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
NameCheap, Inc.
Registered
7 September 1999
Last changed
8 August 2026
Expires
7 September 2027
Status
client transfer prohibited
Registry nameservers
ns1.nationbuilder.com, ns2.nationbuilder.com, ns3.nationbuilder.com, ns4.nationbuilder.com, ns5.nationbuilder.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 2027-09-07 #3
    The registration is valid until 2027-09-07 (320 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

ns1.nationbuilder.com, ns2.nationbuilder.com, ns3.nationbuilder.com, ns4.nationbuilder.com, ns5.nationbuilder.com

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
ns1.nationbuilder.com, ns2.nationbuilder.com, ns3.nationbuilder.com, ns4.nationbuilder.com, ns5.nationbuilder.com
NS in the zone
ns1.nationbuilder.com, ns2.nationbuilder.com, ns3.nationbuilder.com, ns4.nationbuilder.com, ns5.nationbuilder.com
NameserverAddressesNetwork (AS)Glue
ns1.nationbuilder.com162.159.1.253 2400:cb00:2049:1::a29f:1fdAS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US162.159.1.253
ns2.nationbuilder.com162.159.4.251 2400:cb00:2049:1::a29f:4fbAS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US162.159.4.251
ns3.nationbuilder.com162.159.5.251 2400:cb00:2049:1::a29f:5fbAS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US162.159.5.251
ns4.nationbuilder.com162.159.6.249 2400:cb00:2049:1::a29f:6f9AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US162.159.6.249
ns5.nationbuilder.com162.159.7.235 2400:cb00:2049:1::a29f:7ebAS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US162.159.7.235

Checks

  • ✓ 5 nameservers #6
    Delegated to ns1.nationbuilder.com, ns2.nationbuilder.com, ns3.nationbuilder.com, ns4.nationbuilder.com, ns5.nationbuilder.com.
  • ✓ Parent and zone agree #7
    The parent delegation and the zone's NS records list the same nameservers.
  • !
    Glue differs from the zone
    The addresses at the parent (glue) differ from the addresses in the zone: ns1.nationbuilder.com (glue 162.159.1.253, zone 162.159.1.253, 2400:cb00:2049:1::a29f:1fd); ns2.nationbuilder.com (glue 162.159.4.251, zone 162.159.4.251, 2400:cb00:2049:1::a29f:4fb); ns3.nationbuilder.com (glue 162.159.5.251, zone 162.159.5.251, 2400:cb00:2049:1::a29f:5fb); ns4.nationbuilder.com (glue 162.159.6.249, zone 162.159.6.249, 2400:cb00:2049:1::a29f:6f9); ns5.nationbuilder.com (glue 162.159.7.235, zone 162.159.7.235, 2400:cb00:2049:1::a29f:7eb). 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
ns1.nationbuilder.com 162.159.1.253NOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
ns1.nationbuilder.com 2400:cb00:2049:1::a29f:1fdNOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
ns2.nationbuilder.com 162.159.4.251NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
ns2.nationbuilder.com 2400:cb00:2049:1::a29f:4fbNOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
ns3.nationbuilder.com 162.159.5.251NOERROR, 17 ms, authoritativenoyes / yesrefused2026.10.2
ns3.nationbuilder.com 2400:cb00:2049:1::a29f:5fbNOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
ns4.nationbuilder.com 162.159.6.249NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
ns4.nationbuilder.com 2400:cb00:2049:1::a29f:6f9NOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
ns5.nationbuilder.com 162.159.7.235NOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
ns5.nationbuilder.com 2400:cb00:2049:1::a29f:7ebNOERROR, 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: ns1.nationbuilder.com: "2026.10.2"; ns2.nationbuilder.com: "2026.10.2"; ns3.nationbuilder.com: "2026.10.2"; ns4.nationbuilder.com: "2026.10.2"; ns5.nationbuilder.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 2418141031 · primary ns1.nationbuilder.com

Found

Primary (MNAME)
ns1.nationbuilder.com
Contact (RNAME)
dns.cloudflare.com
Serial
2418141031
Refresh / retry
10000 s / 2400 s
Expire
604800 s
Negative TTL
1800 s

Serial per nameserver

NameserverSerial
ns1.nationbuilder.com (162.159.1.253)2418141031
ns1.nationbuilder.com (2400:cb00:2049:1::a29f:1fd)2418141031
ns2.nationbuilder.com (162.159.4.251)2418141031
ns2.nationbuilder.com (2400:cb00:2049:1::a29f:4fb)2418141031
ns3.nationbuilder.com (162.159.5.251)2418141031
ns3.nationbuilder.com (2400:cb00:2049:1::a29f:5fb)2418141031
ns4.nationbuilder.com (162.159.6.249)2418141031
ns4.nationbuilder.com (2400:cb00:2049:1::a29f:6f9)2418141031
ns5.nationbuilder.com (162.159.7.235)2418141031
ns5.nationbuilder.com (2400:cb00:2049:1::a29f:7eb)2418141031

Checks

  • ✓ Serial 2418141031 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.nationbuilder.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 2418141031 is a Unix timestamp (2046-08-17 17:50 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

info

34 records at the apex

Found

Read from
162.159.1.253:53
TypeValueTTL
SOAns1.nationbuilder.com. dns.cloudflare.com. 2418141031 10000 2400 604800 18001800
NSns1.nationbuilder.com.86400
NSns2.nationbuilder.com.86400
NSns3.nationbuilder.com.86400
NSns4.nationbuilder.com.86400
NSns5.nationbuilder.com.86400
A162.159.138.44300
A162.159.128.45300
AAAA2606:4700:7::a29f:8a2c300
AAAA2606:4700:7::a29f:802d300
MX1 smtp.google.com.300
TXT"208FAB9406"30
TXT"265828448-6968164"30
TXT"MS=ms92274457"30
TXT"anthropic-domain-verification-ek9s16=HwAHCKZUHQfhh2h0HBEnFjYMx"30
TXT"ca3-27a52289e6c14b52961d3f9f07558140"30
TXT"ca3-318947983e0c42a68fae6160905953ff"30
TXT"ca3-90cc5791db164f53bbefaacfc4e8ea3b"30
TXT"ca3-b603efc66d784e1cb144c059e93c1bcc"30
TXT"cloudflare_dashboard_sso=1358d1ea6079e96dff341f7cd174d43b"30
TXT"cloudflare_dashboard_sso=50555dfecb5b208f584ae3cabe7172ee"30
TXT"cloudflare_dashboard_sso=bec003ada724533aa2073fde53e896a2"30
TXT"cloudflare_dashboard_sso=e428a0d7f38ac8e3573677bcc1396199"30
TXT"facebook-domain-verification=gau2snoigq1pwglyivrgpxz9cwiye6"30
TXT"google-site-verification=JovjIzQMKJvVOCaNu42YZH5ZsPPihb3Q1eCmd4l_rXA"30
TXT"google-site-verification=Ntel0mWwa-jcPFJdM7wjgPXM7R08Xb3hus1-H7bi3IQ"30
TXT"google-site-verification=XjIR4IU1nafuw08V5DAIy6OqrZBgKmwy_WkFGlI6Tnw"30
TXT"include:45684064.spf05.hubspotemail.net"30
TXT"kmmbsagvq4t940530ao9kd39jm"30
TXT"mandrill_verify.uZ8la211RCa5RyzSmfW_ag"30
TXT"status-page-domain-verification=kn2myc1zjbyn"30
TXT"status-page-domain-verification=rh79sc3kzz81"30
TXT"tmrf1simqk5vd79t9jfbtbvt4a"30
TXT"v=spf1 a mx include:_spf.google.com include:sendgrid.net include:45684064.spf05.hubspotemail.net include:stspg-customer.com -all"30

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.
  • i
    Wildcard record
    A random name under the zone resolves, so there is a wildcard (*) record. Typos and non-existent hosts resolve too, which can confuse mail and certificate checks.
    #34
  • 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