simpleflying.com

Checked 22 October 2026, 10:43 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 2027-01-12

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
GoDaddy.com, LLC
Registered
12 January 2013
Last changed
13 January 2026
Expires
12 January 2027
Status
client delete prohibited, client renew prohibited, client transfer prohibited, client update prohibited
Registry nameservers
ns20.digicertdns.com, ns21.digicertdns.com, ns23.digicertdns.net, ns24.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 2027-01-12 #3
    The registration is valid until 2027-01-12 (82 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, ns24.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, ns24.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.net208.80.127.223 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

  • ✓ 4 nameservers #6
    Delegated to ns20.digicertdns.com, ns21.digicertdns.com, ns23.digicertdns.net, ns24.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, 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, 3 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, 3 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, 3 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 2009010294 · primary ns20.digicertdns.com

Found

Primary (MNAME)
ns20.digicertdns.com
Contact (RNAME)
dns.digicertdns.com
Serial
2009010294
Refresh / retry
43200 s / 3600 s
Expire
1209600 s
Negative TTL
180 s

Serial per nameserver

NameserverSerial
ns20.digicertdns.com (208.94.148.223)2009010294
ns20.digicertdns.com (2600:1800:10::1:1f)2009010294
ns21.digicertdns.com (208.80.124.223)2009010294
ns21.digicertdns.com (2600:1801:11::1:1f)2009010294
ns22.digicertdns.com (208.80.126.223)2009010294
ns22.digicertdns.com (2600:1802:12::1:1f)2009010294
ns23.digicertdns.net (208.80.125.223)2009010294
ns23.digicertdns.net (2600:1801:13::1:1f)2009010294
ns24.digicertdns.net (208.80.127.223)2009010294
ns24.digicertdns.net (2600:1802:14::1:1f)2009010294
ns25.digicertdns.net (208.94.149.223)2009010294
ns25.digicertdns.net (2600:1800:15::1:1f)2009010294

Checks

  • ✓ Serial 2009010294 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 2009010294 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

27 records at the apex

Found

Read from
208.94.148.223:53
TypeValueTTL
SOAns20.digicertdns.com. dns.digicertdns.com. 2009010294 43200 3600 1209600 18086400
NSns21.digicertdns.com.86400
NSns25.digicertdns.net.86400
NSns23.digicertdns.net.86400
NSns24.digicertdns.net.86400
NSns20.digicertdns.com.86400
NSns22.digicertdns.com.86400
A34.233.113.24186400
MX30 aspmx2.googlemail.com.86400
MX30 aspmx3.googlemail.com.86400
MX10 aspmx.l.google.com.86400
MX20 alt1.aspmx.l.google.com.86400
MX20 alt2.aspmx.l.google.com.86400
TXT"google-site-verification=ZZnMZIrKLSOcEWikXmp3xIJVAf9x9IKDqSm5eaFvrrw"1800
TXT"google-site-verification=2TSArY-GFBxZ8YkAZUOqUuZz7Wk-2ScLTSV3QhmJuVY"1800
TXT"google-site-verification=2OG3wSofA_fgrY98lvefkFPlwgoImopmrnWuqGDdkfc"1800
TXT"google-site-verification=Y0goHEVpJAApVL5hROdtDjbMFGnUQPlFcm4WSAVvXsA"1800
TXT"v=spf1 include:_spf.google.com include:amazonses.com include:one.zoho.com ~all"1800
TXT"google-site-verification=pLHekt5TTVhSjOZT_aFq1I9HQ3HYXiNsOGWIH-sJgcY"1800
CAA0 issue "amazonaws.com"86400
CAA0 issue "amazontrust.com"86400
CAA0 issue "letsencrypt.org"86400
CAA0 issuewild "amazontrust.com"86400
CAA0 issuewild "amazonaws.com"86400
CAA0 issue "amazon.com"86400
CAA0 issuewild "letsencrypt.org"86400
CAA0 issuewild "amazon.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: amazonaws.com, amazontrust.com, letsencrypt.org, amazon.com.