redfin.com

Checked 22 October 2026, 10:30 UTC · via 8.8.8.8
!Passed with warnings
26 passed 2 warnings 0 failed 3 info

Registration

info

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

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
GoDaddy Corporate Domains, LLC
Registered
2 May 2000
Last changed
7 April 2026
Expires
2 May 2027
Status
client transfer prohibited, server delete prohibited, server transfer prohibited, server update prohibited
Registry nameservers
ns-1284.awsdns-32.org, ns-146.awsdns-18.com, ns-1591.awsdns-06.co.uk, ns-716.awsdns-25.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 2027-05-02 #3
    The registration is valid until 2027-05-02 (191 days).
  • ✓ Transfer locked #4
    Registry status: client transfer prohibited, server delete prohibited, server transfer prohibited, server update prohibited.
  • ✓ Registry and delegation match #5
    The nameservers registered at the registry are the ones published in DNS.

Delegation

info

ns-1284.awsdns-32.org, ns-146.awsdns-18.com, ns-1591.awsdns-06.co.uk, ns-716.awsdns-25.net

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
ns-1284.awsdns-32.org, ns-146.awsdns-18.com, ns-1591.awsdns-06.co.uk, ns-716.awsdns-25.net
NS in the zone
ns-1284.awsdns-32.org, ns-146.awsdns-18.com, ns-1591.awsdns-06.co.uk, ns-716.awsdns-25.net
NameserverAddressesNetwork (AS)Glue
ns-1284.awsdns-32.org205.251.197.4 2600:9000:5305:400::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US-
ns-146.awsdns-18.com205.251.192.146 2600:9000:5300:9200::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US205.251.192.146 2600:9000:5300:9200::1
ns-1591.awsdns-06.co.uk205.251.198.55 2600:9000:5306:3700::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US-
ns-716.awsdns-25.net205.251.194.204 2600:9000:5302:cc00::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US-

Checks

  • ✓ 4 nameservers #6
    Delegated to ns-1284.awsdns-32.org, ns-146.awsdns-18.com, ns-1591.awsdns-06.co.uk, ns-716.awsdns-25.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-1284.awsdns-32.org 205.251.197.4NOERROR, 5 ms, authoritativenoyes / yesrefused-
ns-1284.awsdns-32.org 2600:9000:5305:400::1NOERROR, 5 ms, authoritativenoyes / yesrefused-
ns-146.awsdns-18.com 205.251.192.146NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns-146.awsdns-18.com 2600:9000:5300:9200::1NOERROR, 10 ms, authoritativenoyes / yesrefused-
ns-1591.awsdns-06.co.uk 205.251.198.55NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns-1591.awsdns-06.co.uk 2600:9000:5306:3700::1NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns-716.awsdns-25.net 205.251.194.204NOERROR, 6 ms, authoritativenoyes / yesrefused-
ns-716.awsdns-25.net 2600:9000:5302:cc00::1NOERROR, 6 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 1 · primary ns-1284.awsdns-32.org

Found

Primary (MNAME)
ns-1284.awsdns-32.org
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-1284.awsdns-32.org (205.251.197.4)1
ns-1284.awsdns-32.org (2600:9000:5305:400::1)1
ns-146.awsdns-18.com (205.251.192.146)1
ns-146.awsdns-18.com (2600:9000:5300:9200::1)1
ns-1591.awsdns-06.co.uk (205.251.198.55)1
ns-1591.awsdns-06.co.uk (2600:9000:5306:3700::1)1
ns-716.awsdns-25.net (205.251.194.204)1
ns-716.awsdns-25.net (2600:9000:5302:cc00::1)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-1284.awsdns-32.org 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

53 records at the apex

Found

Read from
205.251.197.4:53
TypeValueTTL
SOAns-1284.awsdns-32.org. awsdns-hostmaster.amazon.com. 1 7200 900 1209600 86400900
NSns-1284.awsdns-32.org.60
NSns-146.awsdns-18.com.60
NSns-1591.awsdns-06.co.uk.60
NSns-716.awsdns-25.net.60
A143.204.181.2660
A143.204.181.10860
A143.204.181.8160
A143.204.181.6060
MX1 aspmx.l.google.com.300
MX10 alt3.aspmx.l.google.com.300
MX10 alt4.aspmx.l.google.com.300
MX5 alt1.aspmx.l.google.com.300
MX5 alt2.aspmx.l.google.com.300
TXT"Dynatrace-site-verification=d15fd62c-977e-4021-b620-5c30b6630dea__dietm86k7cfav8micmobtav84n"3600
TXT"MS=435E12EDA2B94B223DF2B0158BA1C906D6EF6D7A"3600
TXT"MS=6E91B3AA6D411AED1AECAF6ED6545A6591659542"3600
TXT"MS=ms72583604"3600
TXT"YG8-PL4-TDM"3600
TXT"ZOOM_verify_cSEUY9L4r5nzFKfUPrXqDm"3600
TXT"adobe-idp-site-verification=585c3a26452055f0f820247b1a4d327b4ee4204522f0fa5983ec2a255859bd50"3600
TXT"amazonses:iIzKxR3dWwMTgCLElb5bFSz21OQ4hjd+6ouPTZHbqT0="3600
TXT"amazonses:wRTLrd52jcIewqXTXP7w1A1F5lGM4v4AVx4jY6meuQY="3600
TXT"anthropic-domain-verification-g24c3r=YGuSJBPgLv22GH9SCkVUxds9T"3600
TXT"anthropic-domain-verification-qwa3xa=yNv1xaBe3ctijnhh8QSvpZrMR"3600
TXT"apple-domain-verification=SpXJdzegQhOP-d2ni7JBIFjCOWeqRgMvQuzvHcZ584I"3600
TXT"apple-domain-verification=ZqqDKsoKEUgt8cjg"3600
TXT"atlassian-domain-verification=giamZFKVWuoQT-LZwb4wTOONU3aj6IM0VVf/hxYXzyUofcsBwbGoYXk/XteJDauM"3600
TXT"canva-site-verification=YZ_nfTN9u7oVqZdf1DDcCw"3600
TXT"canva-site-verification=izDhYyMNgbGPvTLxyTOESg"3600
TXT"docker-verification=c4402b67-13bb-4738-996b-7e3b450f1aa4"3600
TXT"docusign=3146bfe3-5dec-46b2-b9ce-45fc29bbc8f8"3600
TXT"docusign=8b17e0c4-5963-41b2-916b-958d5d71adb3"3600
TXT"es-domain-verification=f6857f1b-926d-404e-a258-43f3bae92e44"3600
TXT"facebook-domain-verification=i3envhybnl7htwxj2ajdanmmp75h6p"3600
TXT"google-site-verification=ER7ET13XTxdIpgSkKfXk5D8iivSZDDZ8CRlUbXEJfH4"3600
TXT"google-site-verification=aNXFxrfUjzMzmNk0vu59TjK18WMNJyjbed3ceUJdQdk"3600
TXT"google-site-verification=lbCNKCGK26As8m_1rhcatuWVrXxTrzUAePSI6k43_oM"3600
TXT"google-site-verification=usaY5xaUcCqmNZFe7ZjWY_AcVQMbcI0uG4h0Z61Jq-o"3600
TXT"jamf-site-verification=uAJ0U9wpXlMZGtzy3SxhsA"3600
TXT"knowbe4-site-verification=fb8cd586910de693ac92add24415a330"3600
TXT"lucid-verification=!Sy4WneQkIq$"3600
TXT"panw-email-dlp-verification=f6d2768d5d6c4aafbdaf00b24d20f65f"3600
TXT"rovag_verification_token=D08E779AD1924E6FAD3CCDAF926A87AE"3600
TXT"slack-domain-verification=2xuQfoKydRSFdqlu1v29X5Hqjs5kr835FBUmXUEw"3600
TXT"sophos-domain-verification=f3fec3dfb7fde805c2deea57194bd2516bd2c2ac3531a05f941badf81812900f"3600
TXT"sprout-social-9c4edb36-88d8-4beb-9c44-7957d5040ca2"3600
TXT"stripe-verification=13e54564e253989759fb4b5a275df274374ebd956f48713d9cff5634c13c12bf"3600
TXT"stripe-verification=26a8bcfe13a2e19a1bc5ca002bc82df094513a09b0960f9b33c5fb13721e4c3e"3600
TXT"twilio-domain-verification=ba1289e797252c3163c06cda32ebfd81"3600
TXT"v=spf1 include:_s99923342.fdmarc.net -all"3600
TXT"wiz-domain-verification=41602d2337f0422d8534398711da817e95aad44369ab3e649c7cd4e9d9e4ef95"3600
TXT"zapier-domain-verification-challenge=8105da71-a996-4ade-9d79-347dcfcb2b2a"3600

Checks

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