share.flipboard.com

Zone flipboard.com · Checked 22 October 2026, 10:41 UTC · via 8.8.8.8
!Passed with warnings
27 passed 2 warnings 0 failed 2 info

Registration

info

.com generic · Amazon Registrar, Inc. · expires 2027-03-06

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
Amazon Registrar, Inc.
Registered
6 March 2000
Last changed
15 May 2026
Expires
6 March 2027
Status
client transfer prohibited
Registry nameservers
ns-1510.awsdns-60.org, ns-1756.awsdns-27.co.uk, ns-60.awsdns-07.com, ns-816.awsdns-38.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 2027-03-06 #3
    The registration is valid until 2027-03-06 (134 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

ns-1510.awsdns-60.org, ns-1756.awsdns-27.co.uk, ns-60.awsdns-07.com, ns-816.awsdns-38.net

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
ns-1510.awsdns-60.org, ns-1756.awsdns-27.co.uk, ns-60.awsdns-07.com, ns-816.awsdns-38.net
NS in the zone
ns-1510.awsdns-60.org, ns-1756.awsdns-27.co.uk, ns-60.awsdns-07.com, ns-816.awsdns-38.net
NameserverAddressesNetwork (AS)Glue
ns-1510.awsdns-60.org205.251.197.230 2600:9000:5305:e600::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US-
ns-1756.awsdns-27.co.uk205.251.198.220 2600:9000:5306:dc00::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US-
ns-60.awsdns-07.com205.251.192.60 2600:9000:5300:3c00::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US205.251.192.60 2600:9000:5300:3c00::1
ns-816.awsdns-38.net205.251.195.48 2600:9000:5303:3000::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US-

Checks

  • ✓ 4 nameservers #6
    Delegated to ns-1510.awsdns-60.org, ns-1756.awsdns-27.co.uk, ns-60.awsdns-07.com, ns-816.awsdns-38.net.
  • ✓ 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 4 IPv4 /24s and 4 IPv6 /48s.
  • i
    All nameservers in one AS
    All nameserver addresses are announced by one network operator (AS16509 (AMAZON-02 - Amazon.com, Inc., US): 8 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 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

8 of 8 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns-1510.awsdns-60.org 205.251.197.230NOERROR, 3 ms, authoritativenoyes / yesrefused-
ns-1510.awsdns-60.org 2600:9000:5305:e600::1NOERROR, 4 ms, authoritativenoyes / yesrefused-
ns-1756.awsdns-27.co.uk 205.251.198.220NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns-1756.awsdns-27.co.uk 2600:9000:5306:dc00::1NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns-60.awsdns-07.com 205.251.192.60NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns-60.awsdns-07.com 2600:9000:5300:3c00::1NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns-816.awsdns-38.net 205.251.195.48NOERROR, 4 ms, authoritativenoyes / yesrefused-
ns-816.awsdns-38.net 2600:9000:5303:3000::1NOERROR, 4 ms, authoritativenoyes / yesrefused-

Checks

  • ✓ All respond #14
    All 8 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 1371041870 · primary ns-816.awsdns-38.net

Found

Primary (MNAME)
ns-816.awsdns-38.net
Contact (RNAME)
awsdns-hostmaster.amazon.com
Serial
1371041870
Refresh / retry
43200 s / 10800 s
Expire
1209600 s
Negative TTL
3600 s

Serial per nameserver

NameserverSerial
ns-1510.awsdns-60.org (205.251.197.230)1371041870
ns-1510.awsdns-60.org (2600:9000:5305:e600::1)1371041870
ns-1756.awsdns-27.co.uk (205.251.198.220)1371041870
ns-1756.awsdns-27.co.uk (2600:9000:5306:dc00::1)1371041870
ns-60.awsdns-07.com (205.251.192.60)1371041870
ns-60.awsdns-07.com (2600:9000:5300:3c00::1)1371041870
ns-816.awsdns-38.net (205.251.195.48)1371041870
ns-816.awsdns-38.net (2600:9000:5303:3000::1)1371041870

Checks

  • ✓ Serial 1371041870 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 12h, retry 3h, expire 14d, negative TTL 1h.
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns-816.awsdns-38.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.
  • ✓ Timestamp serial #26
    The serial 1371041870 is a Unix timestamp (2013-06-12 12:57 UTC).

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

43 records at the apex

Found

Read from
205.251.197.230:53
TypeValueTTL
SOAns-816.awsdns-38.net. awsdns-hostmaster.amazon.com. 1371041870 43200 10800 1209600 36003600
NSns-1510.awsdns-60.org.172800
NSns-1756.awsdns-27.co.uk.172800
NSns-60.awsdns-07.com.172800
NSns-816.awsdns-38.net.172800
A18.173.205.9160
A18.173.205.7660
A18.173.205.9360
A18.173.205.3260
AAAA2600:9000:2724:9c00:15:d33e:2640:93a160
AAAA2600:9000:2724:400:15:d33e:2640:93a160
AAAA2600:9000:2724:9400:15:d33e:2640:93a160
AAAA2600:9000:2724:3800:15:d33e:2640:93a160
AAAA2600:9000:2724:4000:15:d33e:2640:93a160
AAAA2600:9000:2724:7800:15:d33e:2640:93a160
AAAA2600:9000:2724:a00:15:d33e:2640:93a160
AAAA2600:9000:2724:ce00:15:d33e:2640:93a160
MX10 aspmx.l.google.com.3600
MX20 alt1.aspmx.l.google.com.3600
MX20 alt2.aspmx.l.google.com.3600
MX30 aspmx2.googlemail.com.3600
MX30 aspmx3.googlemail.com.3600
MX30 aspmx4.googlemail.com.3600
MX30 aspmx5.googlemail.com.3600
TXT"_wpengine-sso-challenge.flipboard.com= 2KkDEiUGF0IvgPeA6uHIcV57z9H"60
TXT"_wpengine-sso-challenge= 2KkDEiUGF0IvgPeA6uHIcV57z9H"60
TXT"anthropic-domain-verification-1avd9b=GWlaVK7cM1UrnAecUR0PhzRI7"60
TXT"atlassian-domain-verification=dZ8g4eOwcpvhvx5AD10LH0gUSjKTUUgORwal07qANXl3412gq8IYKOlI4oa4llnl"60
TXT"google-site-verification=196ICmalqDggbij227IKpDuO8wjKIGJOoWQUKVR0B0U"60
TXT"google-site-verification=47g-PnfQPJHjb8Ze5YYF-hF2ABg67yFQc-kwrSv8PAY"60
TXT"google-site-verification=9rExE5dYg3CPZ3GFGvrkj2MbbKAkdHHH5aRUYSnq9w4"60
TXT"google-site-verification=BqjKftnKldO1vP49cSkz2ryHMLPk5y3V6-JlkIhUo1U"60
TXT"google-site-verification=EU2djlhiCyLFRE6dqL0HEIwLSclUSRLzkbvQ4ObXr7I"60
TXT"google-site-verification=eqogjmVDZB-9UMYUFvv5OlEO_a20KZadbY7DJw35Dys"60
TXT"have-i-been-pwned-verification=6b731851fd4ef8a6d49f6f8ff8f3eed4"60
TXT"v=spf1 include:servers.mcsv.net include:sendgrid.net include:_spf.google.com -all"60
CAA0 issue "amazon.com"300
CAA0 issue "amazonaws.com"300
CAA0 issue "amazontrust.com"300
CAA0 issue "awstrust.com"300
CAA0 issue "digicert.com"300
CAA0 issue "letsencrypt.org"300
CAA0 issue "pki.goog"300

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.
    #32
  • ✓ 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: amazon.com, amazonaws.com, amazontrust.com, awstrust.com, digicert.com, letsencrypt.org, pki.goog.