rubiconproject.com

Checked 22 October 2026, 10:33 UTC · via 8.8.8.8
!Passed with warnings
26 passed 3 warnings 0 failed 2 info

Registration

info

.com generic · GoDaddy.com, LLC · expires 2027-05-02

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
GoDaddy.com, LLC
Registered
2 May 2007
Last changed
2 May 2026
Expires
2 May 2027
Status
client delete prohibited, client renew prohibited, client transfer prohibited, client update prohibited
Registry nameservers
ns-1150.awsdns-15.org, ns-1722.awsdns-23.co.uk, ns-483.awsdns-60.com, ns-644.awsdns-16.net, ns-cloud-a1.googledomains.com, ns-cloud-a2.googledomains.com, ns-cloud-a3.googledomains.com, ns-cloud-a4.googledomains.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 2027-05-02 #3
    The registration is valid until 2027-05-02 (191 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

ns-1150.awsdns-15.org, ns-1722.awsdns-23.co.uk, ns-483.awsdns-60.com, ns-644.awsdns-16.net, ns-cloud-a1.googledomains.com, ns-cloud-a2.googledomains.com, ns-cloud-a3.googledomains.com, ns-cloud-a4.googledomains.com

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
ns-1150.awsdns-15.org, ns-1722.awsdns-23.co.uk, ns-483.awsdns-60.com, ns-644.awsdns-16.net, ns-cloud-a1.googledomains.com, ns-cloud-a2.googledomains.com, ns-cloud-a3.googledomains.com, ns-cloud-a4.googledomains.com
NS in the zone
ns-1150.awsdns-15.org, ns-1722.awsdns-23.co.uk, ns-483.awsdns-60.com, ns-644.awsdns-16.net
NameserverAddressesNetwork (AS)Glue
ns-1150.awsdns-15.org205.251.196.126 2600:9000:5304:7e00::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US-
ns-1722.awsdns-23.co.uk205.251.198.186 2600:9000:5306:ba00::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US-
ns-483.awsdns-60.com205.251.193.227 2600:9000:5301:e300::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US205.251.193.227 2600:9000:5301:e300::1
ns-644.awsdns-16.net205.251.194.132 2600:9000:5302:8400::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US-
ns-cloud-a1.googledomains.com (parent only)216.239.32.106 2001:4860:4802:32::6aAS15169 GOOGLE - Google LLC, US AS15169 GOOGLE - Google LLC, US2001:4860:4802:32::6a 216.239.32.106
ns-cloud-a2.googledomains.com (parent only)216.239.34.106 2001:4860:4802:34::6aAS15169 GOOGLE - Google LLC, US AS15169 GOOGLE - Google LLC, US2001:4860:4802:34::6a 216.239.34.106
ns-cloud-a3.googledomains.com (parent only)216.239.36.106 2001:4860:4802:36::6aAS15169 GOOGLE - Google LLC, US AS15169 GOOGLE - Google LLC, US2001:4860:4802:36::6a 216.239.36.106
ns-cloud-a4.googledomains.com (parent only)216.239.38.106 2001:4860:4802:38::6aAS15169 GOOGLE - Google LLC, US AS15169 GOOGLE - Google LLC, US2001:4860:4802:38::6a 216.239.38.106

Checks

  • ✓ 8 nameservers #6
    Delegated to ns-1150.awsdns-15.org, ns-1722.awsdns-23.co.uk, ns-483.awsdns-60.com, ns-644.awsdns-16.net, ns-cloud-a1.googledomains.com, ns-cloud-a2.googledomains.com, ns-cloud-a3.googledomains.com, ns-cloud-a4.googledomains.com.
  • !
    NS sets differ
    The nameservers at the parent and in the zone should be the same. Only at the parent: ns-cloud-a1.googledomains.com, ns-cloud-a2.googledomains.com, ns-cloud-a3.googledomains.com, ns-cloud-a4.googledomains.com. ns-1150.awsdns-15.org, ns-1722.awsdns-23.co.uk, ns-483.awsdns-60.com, ns-644.awsdns-16.net report NS ns-1150.awsdns-15.org ns-1722.awsdns-23.co.uk ns-483.awsdns-60.com ns-644.awsdns-16.net. ns-cloud-a1.googledomains.com, ns-cloud-a2.googledomains.com, ns-cloud-a3.googledomains.com, ns-cloud-a4.googledomains.com report NS ns-cloud-a1.googledomains.com ns-cloud-a2.googledomains.com ns-cloud-a3.googledomains.com ns-cloud-a4.googledomains.com.
    #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 8 IPv4 /24s and 5 IPv6 /48s.
  • ✓ 2 autonomous systems #11
    The nameservers are spread over: AS15169 (GOOGLE - Google LLC, US): 8 addresses; AS16509 (AMAZON-02 - Amazon.com, Inc., US): 8 addresses.
  • ✓ Nameserver names under 4 TLDs #12
    Nameserver names use the TLDs .com, .net, .org, .uk.
  • ✓ All reachable over IPv6 #13
    Every nameserver has an IPv6 address.

Nameservers

pass

16 of 16 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns-1150.awsdns-15.org 205.251.196.126NOERROR, 4 ms, authoritativenoyes / yesrefused-
ns-1150.awsdns-15.org 2600:9000:5304:7e00::1NOERROR, 4 ms, authoritativenoyes / yesrefused-
ns-1722.awsdns-23.co.uk 205.251.198.186NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns-1722.awsdns-23.co.uk 2600:9000:5306:ba00::1NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns-483.awsdns-60.com 205.251.193.227NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns-483.awsdns-60.com 2600:9000:5301:e300::1NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns-644.awsdns-16.net 205.251.194.132NOERROR, 3 ms, authoritativenoyes / yesrefused-
ns-644.awsdns-16.net 2600:9000:5302:8400::1NOERROR, 5 ms, authoritativenoyes / yesrefused-
ns-cloud-a1.googledomains.com 216.239.32.106NOERROR, 11 ms, authoritativenoyes / yesrefused-
ns-cloud-a1.googledomains.com 2001:4860:4802:32::6aNOERROR, 14 ms, authoritativenoyes / yesrefused-
ns-cloud-a2.googledomains.com 216.239.34.106NOERROR, 13 ms, authoritativenoyes / yesrefused-
ns-cloud-a2.googledomains.com 2001:4860:4802:34::6aNOERROR, 11 ms, authoritativenoyes / yesrefused-
ns-cloud-a3.googledomains.com 216.239.36.106NOERROR, 42 ms, authoritativenoyes / yesrefused-
ns-cloud-a3.googledomains.com 2001:4860:4802:36::6aNOERROR, 45 ms, authoritativenoyes / yesrefused-
ns-cloud-a4.googledomains.com 216.239.38.106NOERROR, 12 ms, authoritativenoyes / yesrefused-
ns-cloud-a4.googledomains.com 2001:4860:4802:38::6aNOERROR, 16 ms, authoritativenoyes / yesrefused-

Checks

  • ✓ All respond #14
    All 16 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

pass

serial 1 · primary ns-644.awsdns-16.net

Found

Primary (MNAME)
ns-644.awsdns-16.net
Contact (RNAME)
awsdns-hostmaster.amazon.com
Serial
1
Refresh / retry
7200 s / 900 s
Expire
1209600 s
Negative TTL
86400 s

Serial per nameserver

NameserverSerial
ns-1150.awsdns-15.org (205.251.196.126)1
ns-1150.awsdns-15.org (2600:9000:5304:7e00::1)1
ns-1722.awsdns-23.co.uk (205.251.198.186)1
ns-1722.awsdns-23.co.uk (2600:9000:5306:ba00::1)1
ns-483.awsdns-60.com (205.251.193.227)1
ns-483.awsdns-60.com (2600:9000:5301:e300::1)1
ns-644.awsdns-16.net (205.251.194.132)1
ns-644.awsdns-16.net (2600:9000:5302:8400::1)1
ns-cloud-a1.googledomains.com (216.239.32.106)1
ns-cloud-a1.googledomains.com (2001:4860:4802:32::6a)1
ns-cloud-a2.googledomains.com (216.239.34.106)1
ns-cloud-a2.googledomains.com (2001:4860:4802:34::6a)1
ns-cloud-a3.googledomains.com (216.239.36.106)1
ns-cloud-a3.googledomains.com (2001:4860:4802:36::6a)1
ns-cloud-a4.googledomains.com (216.239.38.106)1
ns-cloud-a4.googledomains.com (2001:4860:4802:38::6a)1

Checks

  • ✓ Serial 1 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 2h, retry 15m, expire 14d, negative TTL 1d.
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns-644.awsdns-16.net is one of the listed nameservers.
  • ✓ Contact awsdns-hostmaster@amazon.com #25
    The SOA RNAME awsdns-hostmaster.amazon.com means awsdns-hostmaster@amazon.com.
  • ✓ Counter serial #26
    The serial 1 is a plain counter.

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

warn

31 records at the apex

Found

Read from
205.251.196.126:53
TypeValueTTL
SOAns-644.awsdns-16.net. awsdns-hostmaster.amazon.com. 1 7200 900 1209600 86400900
NSns-1150.awsdns-15.org.300
NSns-1722.awsdns-23.co.uk.300
NSns-483.awsdns-60.com.300
NSns-644.awsdns-16.net.300
A99.84.152.3760
A99.84.152.6760
A99.84.152.9360
A99.84.152.11160
AAAA2600:9000:20e8:aa00:19:133b:2800:93a160
AAAA2600:9000:20e8:7200:19:133b:2800:93a160
AAAA2600:9000:20e8:3800:19:133b:2800:93a160
AAAA2600:9000:20e8:fc00:19:133b:2800:93a160
AAAA2600:9000:20e8:5600:19:133b:2800:93a160
AAAA2600:9000:20e8:6600:19:133b:2800:93a160
AAAA2600:9000:20e8:5a00:19:133b:2800:93a160
AAAA2600:9000:20e8:e800:19:133b:2800:93a160
MX1 aspmx.l.google.com.3600
MX10 aspmx2.googlemail.com.3600
MX10 aspmx3.googlemail.com.3600
MX5 alt1.aspmx.l.google.com.3600
MX5 alt2.aspmx.l.google.com.3600
TXT"00d700000008awveam"3600
TXT"adobe-idp-site-verification=7ba00fd005454fcba9ed31a7ad48786fef98ee97ccc28d469c180d51d3aa792b"3600
TXT"apple-domain-verification=G4AVkC9r63d1Wgp7"3600
TXT"docusign=740bb1dc-f7a3-4027-b408-aed4bd2824d0"3600
TXT"google-site-verification=8Oe3JXELIVSWdd5P6OY4UM5pF_aqaApPAbdvsIqjvtY"3600
TXT"google-site-verification=U-FUvU0VS4falHBMujbJtZpgqy95I2EFC08ADvrqlSQ"3600
TXT"logmein-domain-confirmation 90DIFG9EEUT8U8R48952255"3600
TXT"slack-domain-verification=mlIG4ylJounirRIFXuVrwirxvgiAUa63gagbhqV0"3600
TXT"v=spf1 ip4:72.34.113.100 ip4:69.194.143.140 include:spf.rubiconproject.com include:sendgrid.net include:_spf.google.com include:mktomail.com include:spf.mandrillapp.com include:aspmx.pardot.com ~all"3600

Checks

  • !
    Very low TTLs
    These records have a TTL below 5m, causing extra queries and slower lookups: A (1m), AAAA (1m). Low TTLs are useful just before a planned change. The NS TTL at the parent is 2d and in the zone 5m; resolvers may use either.
    #32
  • ✓ 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