xda-developers.com

Checked 22 October 2026, 11:34 UTC · via 8.8.8.8
!Passed with warnings
25 passed 3 warnings 0 failed 3 info

Registration

info

.com generic · GoDaddy.com, LLC · expires 2030-12-12

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
GoDaddy.com, LLC
Registered
12 December 2002
Last changed
4 April 2025
Expires
12 December 2030
Status
client delete prohibited, client renew prohibited, client transfer prohibited, client update prohibited
Registry nameservers
ns20.digicertdns.com, ns21.digicertdns.com, ns23.digicertdns.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 2030-12-12 #3
    The registration is valid until 2030-12-12 (1512 days).
  • ✓ Transfer locked #4
    Registry status: client delete prohibited, client renew prohibited, client transfer prohibited, client update prohibited.
  • ✓ Registry and delegation match #5
    The nameservers registered at the registry are the ones published in DNS.

Delegation

warn

ns20.digicertdns.com, ns21.digicertdns.com, ns23.digicertdns.net

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
ns20.digicertdns.com, ns21.digicertdns.com, ns23.digicertdns.net
NS in the zone
ns20.digicertdns.com, ns21.digicertdns.com, ns22.digicertdns.com, ns23.digicertdns.net, ns24.digicertdns.net, ns25.digicertdns.net
NameserverAddressesNetwork (AS)Glue
ns20.digicertdns.com208.94.148.223 2600:1800:10::1:1fAS16552 DIGICERT - Tiggee LLC, US AS16552 DIGICERT - Tiggee LLC, US208.94.148.223 2600:1800:10::1:1f
ns21.digicertdns.com208.80.124.223 2600:1801:11::1:1fAS16552 DIGICERT - Tiggee LLC, US AS16552 DIGICERT - Tiggee LLC, US208.80.124.223 2600:1801:11::1:1f
ns22.digicertdns.com (zone only)208.80.126.223 2600:1802:12::1:1fAS16552 DIGICERT - Tiggee LLC, US AS16552 DIGICERT - Tiggee LLC, US-
ns23.digicertdns.net208.80.125.223 2600:1801:13::1:1fAS16552 DIGICERT - Tiggee LLC, US AS16552 DIGICERT - Tiggee LLC, US-
ns24.digicertdns.net (zone only)208.80.127.223 2600:1802:14::1:1fAS16552 DIGICERT - Tiggee LLC, US AS16552 DIGICERT - Tiggee LLC, US-
ns25.digicertdns.net (zone only)208.94.149.223 2600:1800:15::1:1fAS16552 DIGICERT - Tiggee LLC, US AS16552 DIGICERT - Tiggee LLC, US-

Checks

  • ✓ 3 nameservers #6
    Delegated to ns20.digicertdns.com, ns21.digicertdns.com, ns23.digicertdns.net.
  • !
    NS sets differ
    The nameservers at the parent and in the zone should be the same. Only in the zone: ns22.digicertdns.com, ns24.digicertdns.net, ns25.digicertdns.net. ns20.digicertdns.com, ns21.digicertdns.com, ns22.digicertdns.com, ns23.digicertdns.net, ns24.digicertdns.net, ns25.digicertdns.net report NS ns20.digicertdns.com ns21.digicertdns.com ns22.digicertdns.com ns23.digicertdns.net ns24.digicertdns.net ns25.digicertdns.net.
    #7
  • ✓ 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 (AS16552 (DIGICERT - Tiggee 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 2 TLDs #12
    Nameserver names use the TLDs .com, .net.
  • ✓ All reachable over IPv6 #13
    Every nameserver has an IPv6 address.

Nameservers

info

12 of 12 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns20.digicertdns.com 208.94.148.223NOERROR, 3 ms, authoritativenoyes / yesrefusedDNS Made Easy Anycast
ns20.digicertdns.com 2600:1800:10::1:1fNOERROR, 4 ms, authoritativenoyes / yesrefusedDNS Made Easy Anycast
ns21.digicertdns.com 208.80.124.223NOERROR, 3 ms, authoritativenoyes / yesrefusedDNS Made Easy Anycast
ns21.digicertdns.com 2600:1801:11::1:1fNOERROR, 4 ms, authoritativenoyes / yesrefusedDNS Made Easy Anycast
ns22.digicertdns.com 208.80.126.223NOERROR, 3 ms, authoritativenoyes / yesrefusedDNS Made Easy Anycast
ns22.digicertdns.com 2600:1802:12::1:1fNOERROR, 4 ms, authoritativenoyes / yesrefusedDNS Made Easy Anycast
ns23.digicertdns.net 208.80.125.223NOERROR, 3 ms, authoritativenoyes / yesrefusedDNS Made Easy Anycast
ns23.digicertdns.net 2600:1801:13::1:1fNOERROR, 4 ms, authoritativenoyes / yesrefusedDNS Made Easy Anycast
ns24.digicertdns.net 208.80.127.223NOERROR, 3 ms, authoritativenoyes / yesrefusedDNS Made Easy Anycast
ns24.digicertdns.net 2600:1802:14::1:1fNOERROR, 4 ms, authoritativenoyes / yesrefusedDNS Made Easy Anycast
ns25.digicertdns.net 208.94.149.223NOERROR, 3 ms, authoritativenoyes / yesrefusedDNS Made Easy Anycast
ns25.digicertdns.net 2600:1800:15::1:1fNOERROR, 3 ms, authoritativenoyes / yesrefusedDNS Made Easy Anycast

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: ns20.digicertdns.com: "DNS Made Easy Anycast"; ns21.digicertdns.com: "DNS Made Easy Anycast"; ns22.digicertdns.com: "DNS Made Easy Anycast"; ns23.digicertdns.net: "DNS Made Easy Anycast"; ns24.digicertdns.net: "DNS Made Easy Anycast"; ns25.digicertdns.net: "DNS Made Easy Anycast".
    #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

warn

serial 2009010288 · primary ns20.digicertdns.com

Found

Primary (MNAME)
ns20.digicertdns.com
Contact (RNAME)
dns.digicertdns.com
Serial
2009010288
Refresh / retry
43200 s / 3600 s
Expire
1209600 s
Negative TTL
180 s

Serial per nameserver

NameserverSerial
ns20.digicertdns.com (208.94.148.223)2009010288
ns20.digicertdns.com (2600:1800:10::1:1f)2009010288
ns21.digicertdns.com (208.80.124.223)2009010288
ns21.digicertdns.com (2600:1801:11::1:1f)2009010288
ns22.digicertdns.com (208.80.126.223)2009010288
ns22.digicertdns.com (2600:1802:12::1:1f)2009010288
ns23.digicertdns.net (208.80.125.223)2009010288
ns23.digicertdns.net (2600:1801:13::1:1f)2009010288
ns24.digicertdns.net (208.80.127.223)2009010288
ns24.digicertdns.net (2600:1802:14::1:1f)2009010288
ns25.digicertdns.net (208.94.149.223)2009010288
ns25.digicertdns.net (2600:1800:15::1:1f)2009010288

Checks

  • ✓ Serial 2009010288 everywhere #22
    All nameservers serve the same version of the zone.
  • !
    Unusual SOA timers
    negative caching TTL (minimum) 3m is outside 5m–1d (RFC 2308 recommends 1–3 hours). Current values: refresh 12h, retry 1h, expire 14d, negative TTL 3m.
    #23
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns20.digicertdns.com is one of the listed nameservers.
  • ✓ Contact dns@digicertdns.com #25
    The SOA RNAME dns.digicertdns.com means dns@digicertdns.com.
  • ✓ Date-based serial #26
    The serial 2009010288 follows the YYYYMMDDnn convention (2009-01-02).

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

28 records at the apex

Found

Read from
208.94.148.223:53
TypeValueTTL
SOAns20.digicertdns.com. dns.digicertdns.com. 2009010288 43200 3600 1209600 18086400
NSns25.digicertdns.net.86400
NSns22.digicertdns.com.86400
NSns20.digicertdns.com.86400
NSns21.digicertdns.com.86400
NSns23.digicertdns.net.86400
NSns24.digicertdns.net.86400
A52.5.96.9686400
MX20 alt2.aspmx.l.google.com.86400
MX30 aspmx2.googlemail.com.86400
MX30 aspmx3.googlemail.com.86400
MX20 alt1.aspmx.l.google.com.86400
MX10 aspmx.l.google.com.86400
TXT"google-site-verification=5dEWe2VJ92QC0FCSXyEg-yneBNjDjfM92SW0io0UWwg"86400
TXT"facebook-domain-verification=zqdfjg0fx03qad0495u1r9ebixksm1"86400
TXT"google-site-verification=P-3_ccHueZb55W88C-1uICQaI044464qZthDIeohauw"86400
TXT"google-site-verification=i9qzxvqvvgklBLJE4U9629ngpN9qG4GnboXvPDuzDCQ"86400
TXT"google-site-verification=YJWL27jS4XCsS376vYShlXBULPSv9QISUVQI6XGYchM"86400
TXT"google-site-verification=XLhuNmB2MWcwIXYDjGFuNAOJHcSm7ZsUP1mMGgt5Z7c"86400
TXT"v=spf1 include:_spf.google.com include:amazonses.com include:_spf.emailcampaigns.net ~all"86400
CAA0 issue "letsencrypt.org"86400
CAA0 issuewild "letsencrypt.org"86400
CAA0 issuewild "amazonaws.com"86400
CAA0 issue "amazontrust.com"86400
CAA0 issue "amazonaws.com"86400
CAA0 issue "amazon.com"86400
CAA0 issuewild "amazon.com"86400
CAA0 issuewild "amazontrust.com"86400

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.
  • ✓ CAA restricts issuance #35
    Certificates may be issued by: letsencrypt.org, amazonaws.com, amazontrust.com, amazon.com.