rescuetime.com

Checked 22 October 2026, 10:31 UTC · via 8.8.8.8
!Passed with warnings
24 passed 2 warnings 0 failed 5 info

Registration

info

.com generic · Gandi SAS · expires 2028-08-14

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
Gandi SAS
Registered
14 August 2006
Last changed
15 June 2026
Expires
14 August 2028
Status
client transfer prohibited
Registry nameservers
dns1.rescuetime.com, dns2.rescuetime.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 2028-08-14 #3
    The registration is valid until 2028-08-14 (662 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

dns1.rescuetime.com, dns2.rescuetime.com

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
dns1.rescuetime.com, dns2.rescuetime.com
NS in the zone
dns1.rescuetime.com, dns2.rescuetime.com
NameserverAddressesNetwork (AS)Glue
dns1.rescuetime.com52.23.100.9AS16509 AMAZON-02 - Amazon.com, Inc., US52.23.100.9
dns2.rescuetime.com52.6.53.44AS16509 AMAZON-02 - Amazon.com, Inc., US52.6.53.44

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: dns1.rescuetime.com, dns2.rescuetime.com.
    #6
  • ✓ Parent and zone agree #7
    The parent delegation and the zone's NS records list the same nameservers.
  • ✓ Glue present and correct #8
    Glue is published for the nameservers inside the zone: dns1.rescuetime.com, dns2.rescuetime.com.
  • ✓ 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 0 IPv6 /48s.
  • i
    All nameservers in one AS
    All nameserver addresses are announced by one network operator (AS16509 (AMAZON-02 - Amazon.com, Inc., US): 2 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
  • !
    No IPv6
    None of the nameservers has an IPv6 address, so IPv6-only resolvers can't reach them.
    #13

Nameservers

pass

2 of 2 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
dns1.rescuetime.com 52.23.100.9NOERROR, 112 ms, authoritativenoyes / yesrefused-
dns2.rescuetime.com 52.6.53.44NOERROR, 98 ms, authoritativenoyes / yesrefused-

Checks

  • ✓ All respond #14
    All 2 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.
  • ✓ No version disclosed #17
    The nameservers don't reveal their software version.
  • ✓ 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

info

serial 2026100502 · primary dns-master.rescuetime.com

Found

Primary (MNAME)
dns-master.rescuetime.com
Contact (RNAME)
ops.rescuetime.com
Serial
2026100502
Refresh / retry
10800 s / 3600 s
Expire
604800 s
Negative TTL
3600 s

Serial per nameserver

NameserverSerial
dns1.rescuetime.com (52.23.100.9)2026100502
dns2.rescuetime.com (52.6.53.44)2026100502

Checks

  • ✓ Serial 2026100502 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 3h, retry 1h, expire 7d, negative TTL 1h.
  • i
    Hidden master
    The primary nameserver dns-master.rescuetime.com is not listed as a nameserver: a hidden master that only feeds the public secondaries. That is a common setup; make sure it is not reachable for zone transfers from outside.
    #24
  • ✓ Contact ops@rescuetime.com #25
    The SOA RNAME ops.rescuetime.com means ops@rescuetime.com.
  • ✓ Date-based serial #26
    The serial 2026100502 follows the YYYYMMDDnn convention (2026-10-05).

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

19 records at the apex

Found

Read from
52.23.100.9:53
TypeValueTTL
SOAdns-master.rescuetime.com. ops.rescuetime.com. 2026100502 10800 3600 604800 3600300
NSdns1.rescuetime.com.300
NSdns2.rescuetime.com.300
A3.213.224.209300
MX10 aspmx.l.google.com.604800
MX20 alt1.aspmx.l.google.com.604800
MX30 alt2.aspmx.l.google.com.604800
MX40 aspmx2.googlemail.com.604800
MX50 aspmx3.googlemail.com.604800
TXT"v=spf1 a mx include:amazonses.com include:_spf.google.com include:servers.mcsv.net -all"300
TXT"MS=1775CD7F2C4771500CFC85FFF9278255CC023D77"300
TXT"MS=ms12032021"300
TXT"y8qyvy6ds3ldmmwlvsq66sswzrb5r8k4"300
TXT"google-site-verification=icuUblP7RNg0gnzFTz8xphWMsqopr2H9ysofEbQOw_Q"300
CAA0 issue "digicert.com"300
CAA0 iodef "mailto:operator@rescuetime.com"300
CAA0 issue "sectigo.com"300
CAA0 issuewild "sectigo.com"300
CAA0 issuewild "amazontrust.com"300

Checks

  • ✓ TTLs within range #32
    TTLs: A 5m, MX 7d, NS 5m. The NS TTL at the parent is 2d and in the zone 5m; 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: digicert.com, sectigo.com, amazontrust.com.