thisoldhouse.com

Checked 22 October 2026, 11:04 UTC · via 8.8.8.8
!Passed with warnings
24 passed 1 warning 0 failed 6 info

Registration

info

.com generic · CSC Corporate Domains, Inc. · expires 2027-11-13

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
CSC Corporate Domains, Inc.
Registered
14 November 1998
Last changed
2 October 2026
Expires
13 November 2027
Status
client transfer prohibited
Registry nameservers
dns1.cscdns.net, dns2.cscdns.net
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 2027-11-13 #3
    The registration is valid until 2027-11-13 (386 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

dns1.cscdns.net, dns2.cscdns.net

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
dns1.cscdns.net, dns2.cscdns.net
NS in the zone
dns1.cscdns.net, dns2.cscdns.net
NameserverAddressesNetwork (AS)Glue
dns1.cscdns.net156.154.130.100 2610:a1:1022::100AS12008 VERCARA - Vercara, LLC, US AS12008 VERCARA - Vercara, LLC, US-
dns2.cscdns.net156.154.131.100 2610:a1:1023::100AS12008 VERCARA - Vercara, LLC, US AS12008 VERCARA - Vercara, LLC, US-

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: dns1.cscdns.net, dns2.cscdns.net.
    #6
  • ✓ 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 2 IPv4 /24s and 2 IPv6 /48s.
  • i
    All nameservers in one AS
    All nameserver addresses are announced by one network operator (AS12008 (VERCARA - Vercara, LLC, US): 4 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 .net
    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

info

4 of 4 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
dns1.cscdns.net 156.154.130.100NOERROR, 32 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
dns1.cscdns.net 2610:a1:1022::100NOERROR, 32 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
dns2.cscdns.net 156.154.131.100NOERROR, 5 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
dns2.cscdns.net 2610:a1:1023::100NOERROR, 6 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver

Checks

  • ✓ All respond #14
    All 4 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: dns1.cscdns.net: "UltraDNS Nameserver"; dns2.cscdns.net: "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 2020012841 · primary dns1.cscdns.net

Found

Primary (MNAME)
dns1.cscdns.net
Contact (RNAME)
hostmaster.cscdns.net
Serial
2020012841
Refresh / retry
28800 s / 7200 s
Expire
604800 s
Negative TTL
14400 s

Serial per nameserver

NameserverSerial
dns1.cscdns.net (156.154.130.100)2020012841
dns1.cscdns.net (2610:a1:1022::100)2020012841
dns2.cscdns.net (156.154.131.100)2020012841
dns2.cscdns.net (2610:a1:1023::100)2020012841

Checks

  • ✓ Serial 2020012841 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 8h, retry 2h, expire 7d, negative TTL 4h.
  • ✓ Primary is a public nameserver #24
    The primary nameserver dns1.cscdns.net is one of the listed nameservers.
  • ✓ Contact hostmaster@cscdns.net #25
    The SOA RNAME hostmaster.cscdns.net means hostmaster@cscdns.net.
  • ✓ Date-based serial #26
    The serial 2020012841 follows the YYYYMMDDnn convention (2020-01-28).

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

12 records at the apex

Found

Read from
156.154.130.100:53
TypeValueTTL
SOAdns1.cscdns.net. hostmaster.cscdns.net. 2020012841 28800 7200 604800 1440014400
NSdns1.cscdns.net.14400
NSdns2.cscdns.net.14400
A162.159.137.54300
A162.159.136.54300
MX10 thisoldhouse-com.mail.protection.outlook.com.300
TXT"MS=ms73815095"300
TXT"1cq6rcsahhbk4rr78a55926oju"300
TXT"725fqs793gkystcx0w1063k30rbtn9yl"300
TXT"_z7j9y87rlzix4vmeonlv36b1japxpj0"300
TXT"facebook-domain-verification=k6gmd2oe1fobsp27khkh9vd2qdzi3e"300
TXT"v=spf1 include:spf.protection.outlook.com include:spf.mandrillapp.com include:_spf.elasticemail.com ip4:54.85.33.91 ip4:54.209.128.233 ip4:54.209.34.20 ip4:52.70.247.174 ip4:18.205.87.206 ip4:3.232.73.183 ip4:54.208.225.232 ip4:52.5.63.189 ip4:54.157.110." "66 ip4:34.225.42.46 ip4:44.219.75.248 ip4:54.209.110.178 ip4:34.226.178.173 ip4:3.222.95.175 ip4:44.199.80.64 ip4:44.221.155.130 ip4:3.230.224.89 ip4:34.233.68.2 ip4:54.159.66.199 ip4:44.221.92.66 ip4:54.86.253.56 -all"300

Checks

  • ✓ TTLs within range #32
    TTLs: A 5m, MX 5m, NS 4h. The NS TTL at the parent is 2d and in the zone 4h; 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