redtube.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 · EuroDNS S.A. · expires 2027-01-07

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
EuroDNS S.A.
Registered
7 January 2006
Last changed
18 June 2025
Expires
7 January 2027
Status
client transfer prohibited
Registry nameservers
ns-1499.awsdns-59.org, ns-1567.awsdns-03.co.uk, ns-531.awsdns-02.net, ns-92.awsdns-11.com, sdns3.ultradns.biz, sdns3.ultradns.com, sdns3.ultradns.net, sdns3.ultradns.org
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 2027-01-07 #3
    The registration is valid until 2027-01-07 (77 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

pass

ns-1499.awsdns-59.org, ns-1567.awsdns-03.co.uk, ns-531.awsdns-02.net, ns-92.awsdns-11.com, sdns3.ultradns.biz, sdns3.ultradns.com, sdns3.ultradns.net, sdns3.ultradns.org

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
ns-1499.awsdns-59.org, ns-1567.awsdns-03.co.uk, ns-531.awsdns-02.net, ns-92.awsdns-11.com, sdns3.ultradns.biz, sdns3.ultradns.com, sdns3.ultradns.net, sdns3.ultradns.org
NS in the zone
ns-1499.awsdns-59.org, ns-1567.awsdns-03.co.uk, ns-531.awsdns-02.net, ns-92.awsdns-11.com, sdns3.ultradns.biz, sdns3.ultradns.com, sdns3.ultradns.net, sdns3.ultradns.org
NameserverAddressesNetwork (AS)Glue
ns-1499.awsdns-59.org205.251.197.219 2600:9000:5305:db00::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US-
ns-1567.awsdns-03.co.uk205.251.198.31 2600:9000:5306:1f00::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US-
ns-531.awsdns-02.net205.251.194.19 2600:9000:5302:1300::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US-
ns-92.awsdns-11.com205.251.192.92 2600:9000:5300:5c00::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US205.251.192.92 2600:9000:5300:5c00::1
sdns3.ultradns.biz156.154.142.3 2610:a1:1003::3AS12008 VERCARA - Vercara, LLC, US AS12008 VERCARA - Vercara, LLC, US-
sdns3.ultradns.com156.154.140.3 2610:a1:1001::3AS12008 VERCARA - Vercara, LLC, US AS12008 VERCARA - Vercara, LLC, US156.154.140.3 2610:a1:1001::3
sdns3.ultradns.net156.154.141.3 2610:a1:1002::3AS12008 VERCARA - Vercara, LLC, US AS12008 VERCARA - Vercara, LLC, US-
sdns3.ultradns.org156.154.143.3 2610:a1:1004::3AS12008 VERCARA - Vercara, LLC, US AS12008 VERCARA - Vercara, LLC, US-

Checks

  • ✓ 8 nameservers #6
    Delegated to ns-1499.awsdns-59.org, ns-1567.awsdns-03.co.uk, ns-531.awsdns-02.net, ns-92.awsdns-11.com, sdns3.ultradns.biz, sdns3.ultradns.com, sdns3.ultradns.net, sdns3.ultradns.org.
  • ✓ 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 8 IPv4 /24s and 8 IPv6 /48s.
  • ✓ 2 autonomous systems #11
    The nameservers are spread over: AS12008 (VERCARA - Vercara, LLC, US): 8 addresses; AS16509 (AMAZON-02 - Amazon.com, Inc., US): 8 addresses.
  • ✓ Nameserver names under 5 TLDs #12
    Nameserver names use the TLDs .biz, .com, .net, .org, .uk.
  • ✓ All reachable over IPv6 #13
    Every nameserver has an IPv6 address.

Nameservers

info

16 of 16 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns-1499.awsdns-59.org 205.251.197.219NOERROR, 3 ms, authoritativenoyes / yesrefused-
ns-1499.awsdns-59.org 2600:9000:5305:db00::1NOERROR, 4 ms, authoritativenoyes / yesrefused-
ns-1567.awsdns-03.co.uk 205.251.198.31NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns-1567.awsdns-03.co.uk 2600:9000:5306:1f00::1NOERROR, 10 ms, authoritativenoyes / yesrefused-
ns-531.awsdns-02.net 205.251.194.19NOERROR, 4 ms, authoritativenoyes / yesrefused-
ns-531.awsdns-02.net 2600:9000:5302:1300::1NOERROR, 5 ms, authoritativenoyes / yesrefused-
ns-92.awsdns-11.com 205.251.192.92NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns-92.awsdns-11.com 2600:9000:5300:5c00::1NOERROR, 9 ms, authoritativenoyes / yesrefused-
sdns3.ultradns.biz 156.154.142.3NOERROR, 4 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
sdns3.ultradns.biz 2610:a1:1003::3NOERROR, 4 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
sdns3.ultradns.com 156.154.140.3NOERROR, 3 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
sdns3.ultradns.com 2610:a1:1001::3NOERROR, 3 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
sdns3.ultradns.net 156.154.141.3NOERROR, 3 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
sdns3.ultradns.net 2610:a1:1002::3NOERROR, 4 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
sdns3.ultradns.org 156.154.143.3NOERROR, 31 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
sdns3.ultradns.org 2610:a1:1004::3NOERROR, 32 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver

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.
  • i
    Identifying string disclosed
    These nameservers answer version queries with a string that is not a version number: sdns3.ultradns.biz: "UltraDNS Nameserver"; sdns3.ultradns.com: "UltraDNS Nameserver"; sdns3.ultradns.net: "UltraDNS Nameserver"; sdns3.ultradns.org: "UltraDNS Nameserver".
    #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 1 · primary ns-531.awsdns-02.net

Found

Primary (MNAME)
ns-531.awsdns-02.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-1499.awsdns-59.org (205.251.197.219)1
ns-1499.awsdns-59.org (2600:9000:5305:db00::1)1
ns-1567.awsdns-03.co.uk (205.251.198.31)1
ns-1567.awsdns-03.co.uk (2600:9000:5306:1f00::1)1
ns-531.awsdns-02.net (205.251.194.19)1
ns-531.awsdns-02.net (2600:9000:5302:1300::1)1
ns-92.awsdns-11.com (205.251.192.92)1
ns-92.awsdns-11.com (2600:9000:5300:5c00::1)1
sdns3.ultradns.biz (156.154.142.3)2014112179
sdns3.ultradns.biz (2610:a1:1003::3)2014112179
sdns3.ultradns.com (156.154.140.3)2014112179
sdns3.ultradns.com (2610:a1:1001::3)2014112179
sdns3.ultradns.net (156.154.141.3)2014112179
sdns3.ultradns.net (2610:a1:1002::3)2014112179
sdns3.ultradns.org (156.154.143.3)2014112179
sdns3.ultradns.org (2610:a1:1004::3)2014112179

Checks

  • !
    Serials differ
    The nameservers serve different versions of the zone: 1 on ns-1499.awsdns-59.org (205.251.197.219), ns-1499.awsdns-59.org (2600:9000:5305:db00::1), ns-1567.awsdns-03.co.uk (205.251.198.31), ns-1567.awsdns-03.co.uk (2600:9000:5306:1f00::1), ns-531.awsdns-02.net (205.251.194.19), ns-531.awsdns-02.net (2600:9000:5302:1300::1), ns-92.awsdns-11.com (205.251.192.92), ns-92.awsdns-11.com (2600:9000:5300:5c00::1); 2014112179 on sdns3.ultradns.biz (156.154.142.3), sdns3.ultradns.biz (2610:a1:1003::3), sdns3.ultradns.com (156.154.140.3), sdns3.ultradns.com (2610:a1:1001::3), sdns3.ultradns.net (156.154.141.3), sdns3.ultradns.net (2610:a1:1002::3), sdns3.ultradns.org (156.154.143.3), sdns3.ultradns.org (2610:a1:1004::3). This is normal for a few minutes after a change; if it lasts, zone transfers to the secondaries are failing.
    #22
  • ✓ Timers within recommendations #23
    SOA refresh 2h, retry 15m, expire 14d, negative TTL 1d.
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns-531.awsdns-02.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

info

28 records at the apex

Found

Read from
205.251.197.219:53
TypeValueTTL
SOAns-531.awsdns-02.net. awsdns-hostmaster.amazon.com. 1 7200 900 1209600 86400900
NSns-1499.awsdns-59.org.86400
NSns-1567.awsdns-03.co.uk.86400
NSns-531.awsdns-02.net.86400
NSns-92.awsdns-11.com.86400
NSsdns3.ultradns.biz.86400
NSsdns3.ultradns.com.86400
NSsdns3.ultradns.net.86400
NSsdns3.ultradns.org.86400
A66.254.114.2383600
MX10 mxa-002a0701.gslb.pphosted.com.3600
MX10 mxb-002a0701.gslb.pphosted.com.3600
TXT"9jm5x38zsnj8c9l8mlfl54ztzbbd8y3s"3600
TXT"MS=ms41815766"3600
TXT"V-kzbjHYyHYVtniBJuyiWJ5wDd5cW_BuUbPo9Yo-gIU"3600
TXT"_7o5ext0k3ft03kkzqen7wwwc2nzrlgk"3600
TXT"_a8xogbcakeduubmir5ro2fe5raxk42e"3600
TXT"_fw27psggbmbew8gvc1xat73sxxeo4az"3600
TXT"bhsdsmd081rdt2fd9l6plb8zwsphcjmq"3600
TXT"google-site-verification=5PHqp91O2q--PpoL_f6W1D7DSeL_Ne4lGmjMne0cQ18"3600
TXT"google-site-verification=9gpxCff5vciyFx55Hj_mVTxUoThKaCZyjrni3nuyyuo"3600
TXT"google-site-verification=moAnpmLNPD6q_dlvxBI0EOfEu3Brvcqk9vrrqTrYsHU"3600
TXT"google-site-verification=nA3sW-BoUeZdxEPNSeHo2fG58wJ_yF2B9aQ9vjMCNsA"3600
TXT"google-site-verification=yUaPbawRTdxF3Wnsm7ZJoBKZOz_I0a3GMmPnLDExeqE"3600
TXT"google-site-verification=yXCZcuvHm7yQ5rLhnWiIiKlRCh514J-x3M9upiCtQJ4"3600
TXT"m5yy611314d12y5rd2nf5y78sgj5m58q"3600
TXT"rbtwq1jnw88fxz1q3wm9krj5cd2cctrx"3600
TXT"v=spf1 a mx include:_spf.google.com include:mail.zendesk.com ip4:208.91.206.64/26 ip4:62.212.83.19/32 ip4:31.192.125.32/28 ip4:208.99.69.22/32 ip4:94.199.252.160/28 mx ip4:162.211.96.66 ip4:162.211.96.67 include:spf-002a0701.pphosted.com include:spf.prote" "ction.outlook.com ~all"3600

Checks

  • ✓ TTLs within range #32
    TTLs: A 1h, MX 1h, 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.
  • 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