uschamber.com

Checked 22 October 2026, 11:16 UTC · via 8.8.8.8
!Passed with warnings
26 passed 1 warning 0 failed 4 info

Registration

info

.com generic · CSC Corporate Domains, Inc. · expires 2027-03-28

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
CSC Corporate Domains, Inc.
Registered
27 March 1996
Last changed
24 March 2026
Expires
28 March 2027
Status
client transfer prohibited, server delete prohibited, server transfer prohibited, server update prohibited
Registry nameservers
pdns72.ultradns.biz, pdns72.ultradns.co.uk, pdns72.ultradns.com, pdns72.ultradns.info, pdns72.ultradns.net, pdns72.ultradns.org
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 2027-03-28 #3
    The registration is valid until 2027-03-28 (156 days).
  • ✓ Transfer locked #4
    Registry status: client transfer 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

pdns72.ultradns.biz, pdns72.ultradns.co.uk, pdns72.ultradns.com, pdns72.ultradns.info, pdns72.ultradns.net, pdns72.ultradns.org

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
pdns72.ultradns.biz, pdns72.ultradns.co.uk, pdns72.ultradns.com, pdns72.ultradns.info, pdns72.ultradns.net, pdns72.ultradns.org
NS in the zone
pdns72.ultradns.biz, pdns72.ultradns.co.uk, pdns72.ultradns.com, pdns72.ultradns.info, pdns72.ultradns.net, pdns72.ultradns.org
NameserverAddressesNetwork (AS)Glue
pdns72.ultradns.biz156.154.66.72 2610:a1:1015::6cAS12008 VERCARA - Vercara, LLC, US AS12008 VERCARA - Vercara, LLC, US-
pdns72.ultradns.co.uk156.154.69.72 2610:a1:1017::6cAS12008 VERCARA - Vercara, LLC, US AS12008 VERCARA - Vercara, LLC, US-
pdns72.ultradns.com156.154.64.72 2001:502:f3ff::6cAS12008 VERCARA - Vercara, LLC, US AS12008 VERCARA - Vercara, LLC, US156.154.64.72 2001:502:f3ff::6c
pdns72.ultradns.info156.154.68.72 2610:a1:1016::6cAS12008 VERCARA - Vercara, LLC, US AS12008 VERCARA - Vercara, LLC, US-
pdns72.ultradns.net156.154.65.72 2610:a1:1014::6cAS12008 VERCARA - Vercara, LLC, US AS12008 VERCARA - Vercara, LLC, US-
pdns72.ultradns.org156.154.67.72 2001:502:4612::6cAS12008 VERCARA - Vercara, LLC, US AS12008 VERCARA - Vercara, LLC, US-

Checks

  • ✓ 6 nameservers #6
    Delegated to pdns72.ultradns.biz, pdns72.ultradns.co.uk, pdns72.ultradns.com, pdns72.ultradns.info, pdns72.ultradns.net, pdns72.ultradns.org.
  • ✓ 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 6 IPv4 /24s and 6 IPv6 /48s.
  • i
    All nameservers in one AS
    All nameserver addresses are announced by one network operator (AS12008 (VERCARA - Vercara, LLC, US): 12 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 6 TLDs #12
    Nameserver names use the TLDs .biz, .com, .info, .net, .org, .uk.
  • ✓ All reachable over IPv6 #13
    Every nameserver has an IPv6 address.

Nameservers

info

12 of 12 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
pdns72.ultradns.biz 156.154.66.72NOERROR, 3 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
pdns72.ultradns.biz 2610:a1:1015::6cNOERROR, 4 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
pdns72.ultradns.co.uk 156.154.69.72NOERROR, 13 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
pdns72.ultradns.co.uk 2610:a1:1017::6cNOERROR, 13 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
pdns72.ultradns.com 156.154.64.72NOERROR, 3 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
pdns72.ultradns.com 2001:502:f3ff::6cNOERROR, 4 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
pdns72.ultradns.info 156.154.68.72NOERROR, 3 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
pdns72.ultradns.info 2610:a1:1016::6cNOERROR, 4 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
pdns72.ultradns.net 156.154.65.72NOERROR, 4 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
pdns72.ultradns.net 2610:a1:1014::6cNOERROR, 4 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
pdns72.ultradns.org 156.154.67.72NOERROR, 31 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
pdns72.ultradns.org 2001:502:4612::6cNOERROR, 32 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver

Checks

  • ✓ All respond #14
    All 12 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.
  • i
    Identifying string disclosed
    These nameservers answer version queries with a string that is not a version number: pdns72.ultradns.biz: "UltraDNS Nameserver"; pdns72.ultradns.co.uk: "UltraDNS Nameserver"; pdns72.ultradns.com: "UltraDNS Nameserver"; pdns72.ultradns.info: "UltraDNS Nameserver"; pdns72.ultradns.net: "UltraDNS Nameserver"; pdns72.ultradns.org: "UltraDNS Nameserver".
    #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 2012122479 · primary pdns72.ultradns.com

Found

Primary (MNAME)
pdns72.ultradns.com
Contact (RNAME)
mepright.uschamber.com
Serial
2012122479
Refresh / retry
10800 s / 3600 s
Expire
2419200 s
Negative TTL
86400 s

Serial per nameserver

NameserverSerial
pdns72.ultradns.biz (156.154.66.72)2012122479
pdns72.ultradns.biz (2610:a1:1015::6c)2012122479
pdns72.ultradns.co.uk (156.154.69.72)2012122479
pdns72.ultradns.co.uk (2610:a1:1017::6c)2012122479
pdns72.ultradns.com (156.154.64.72)2012122479
pdns72.ultradns.com (2001:502:f3ff::6c)2012122479
pdns72.ultradns.info (156.154.68.72)2012122479
pdns72.ultradns.info (2610:a1:1016::6c)2012122479
pdns72.ultradns.net (156.154.65.72)2012122479
pdns72.ultradns.net (2610:a1:1014::6c)2012122479
pdns72.ultradns.org (156.154.67.72)2012122479
pdns72.ultradns.org (2001:502:4612::6c)2012122479

Checks

  • ✓ Serial 2012122479 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 3h, retry 1h, expire 28d, negative TTL 1d.
  • ✓ Primary is a public nameserver #24
    The primary nameserver pdns72.ultradns.com is one of the listed nameservers.
  • ✓ Contact mepright@uschamber.com #25
    The SOA RNAME mepright.uschamber.com means mepright@uschamber.com.
  • ✓ Date-based serial #26
    The serial 2012122479 follows the YYYYMMDDnn convention (2012-12-24).

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
156.154.66.72:53
TypeValueTTL
SOApdns72.ultradns.com. mepright.uschamber.com. 2012122479 10800 3600 2419200 8640086400
NSpdns72.ultradns.co.uk.86400
NSpdns72.ultradns.biz.86400
NSpdns72.ultradns.com.86400
NSpdns72.ultradns.net.86400
NSpdns72.ultradns.org.86400
NSpdns72.ultradns.info.86400
A151.101.2.13386400
A151.101.66.13386400
A151.101.130.13386400
A151.101.194.13386400
MX100 mxa-00109201.gslb.pphosted.com.86400
MX100 mxb-00109201.gslb.pphosted.com.86400
MX200 mx0a-00109201.pphosted.com.86400
MX200 mx0b-00109201.pphosted.com.86400
TXT"MS=ms14420005"600
TXT"00D5A0000015yWT=1TBPo00000001ov"600
TXT"asv=97249c026f2a209b44d1b61fe9644e11"600
TXT"dropbox-domain-verification=a7k5mtt66gcm"600
TXT"apple-domain-verification=sE02ErxddNO9H7W2"600
TXT"MS=8FDF2F37967C2F2A36067E4626EAE658D2288A7F"600
TXT"jamf-site-verification=ZfwFKEjjxe2oSUSrIRJzIw"600
TXT"facebook-domain-verification=8m50q4bwlkjwwxhjmhdxzbm1856phr"600
TXT"anthropic-domain-verification-b9nxmx=cdFOIuXYEFUZrS3SV2JxyVjF1"600
TXT"calendly-site-verification=OH3lMdyQH4dBuU6s4XrCPSvtIveyUM8JnahhlTiVF"600
TXT"google-site-verification=2jzYML6oxM9ZBCS4_WItyQJAFVPSyKqekZA_MXEJTqI"600
TXT"google-site-verification=X330USjfikKZ6LK3pSwYV7pHdK1qDWNp9Mc39pnBVN8"600
TXT"google-site-verification=cpAB_W51yD3EtBJY8ZjeUuy1dPJf_Wx97-Kz2MCr6hQ"600
TXT"google-site-verification=q2FCUeF0aVRACDJ6yLZCmEmZTZxLP4et16IfLUpTRgc"600
TXT"google-site-verification=w6_zuRntK7uFgegMErxtAM0NrTt1GiaF6cucxgfvWOY"600
TXT"_globalsign-domain-verification=p1fktqCHnOA1sE262wg61RlM1M1TddxeBhTTQfKOf-"600
TXT"JkzgbDnhpvfvwUqQWhR1G/C6qMnxBF9tD7MgXjIxc1wZh9PrfZuFGaZQbnYjKG/LLI3F0h/PNxJ/69fT1YcrbA=="600
TXT"atlassian-domain-verification=NGXfpzqXmD3SRA9Zh45a5t20H5bnrxp1bjcXAsYZrfw9iI8ZBx11yRgbqGKQ8aBc"600
TXT"v=spf1 ip4:128.177.108.46 ip4:209.3.198.0/24 ip4:38.70.10.69 ip4:216.200.160.161/28 ip4:216.185.15.192/26 ip4:103.151.192.0/23 ip4:185.12.80.0/22 ip4:188.172.128.0/20 ip4:192.161.144.0/20 ip4:216.198.0.0/18 include:spf.congressplus.com include:spf.protect" "ion.outlook.com include:email.prnewswire.com include:spf-00109201.pphosted.com include:cust-spf.exacttarget.com include:_spf.salesforce.com include:_spf.psm.knowbe4.com include:44883523.spf02.hubspotemail.net include:50705538.spf04.hubspotemail.net ip4:14" "9.72.146.30 ip4:167.89.111.32 -all"600

Checks

  • ✓ TTLs within range #32
    TTLs: A 1d, MX 1d, 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