screenconnect.com

Checked 22 October 2026, 10:35 UTC · via 8.8.8.8
!Passed with warnings
24 passed 3 warnings 0 failed 4 info

Registration

info

.com generic · Amazon Registrar, Inc. · expires 2027-10-27

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
Amazon Registrar, Inc.
Registered
27 October 2004
Last changed
25 September 2026
Expires
27 October 2027
Status
active
Registry nameservers
ns-1043.awsdns-02.org, ns-1986.awsdns-56.co.uk, ns-278.awsdns-34.com, ns-740.awsdns-28.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 2027-10-27 #3
    The registration is valid until 2027-10-27 (369 days).
  • i
    No transfer lock
    The domain has no transfer lock (status: active). A registrar lock protects against unauthorized transfers.
    #4
  • ✓ Registry and delegation match #5
    The nameservers registered at the registry are the ones published in DNS.

Delegation

info

ns-1043.awsdns-02.org, ns-1986.awsdns-56.co.uk, ns-278.awsdns-34.com, ns-740.awsdns-28.net

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
ns-1043.awsdns-02.org, ns-1986.awsdns-56.co.uk, ns-278.awsdns-34.com, ns-740.awsdns-28.net
NS in the zone
ns-1043.awsdns-02.org, ns-1986.awsdns-56.co.uk, ns-278.awsdns-34.com, ns-740.awsdns-28.net
NameserverAddressesNetwork (AS)Glue
ns-1043.awsdns-02.org205.251.196.19 2600:9000:5304:1300::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US-
ns-1986.awsdns-56.co.uk205.251.199.194 2600:9000:5307:c200::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US-
ns-278.awsdns-34.com205.251.193.22 2600:9000:5301:1600::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US205.251.193.22 2600:9000:5301:1600::1
ns-740.awsdns-28.net205.251.194.228 2600:9000:5302:e400::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US-

Checks

  • ✓ 4 nameservers #6
    Delegated to ns-1043.awsdns-02.org, ns-1986.awsdns-56.co.uk, ns-278.awsdns-34.com, ns-740.awsdns-28.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-1043.awsdns-02.org 205.251.196.19NOERROR, 3 ms, authoritativenoyes / yesrefused-
ns-1043.awsdns-02.org 2600:9000:5304:1300::1NOERROR, 4 ms, authoritativenoyes / yesrefused-
ns-1986.awsdns-56.co.uk 205.251.199.194NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns-1986.awsdns-56.co.uk 2600:9000:5307:c200::1NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns-278.awsdns-34.com 205.251.193.22NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns-278.awsdns-34.com 2600:9000:5301:1600::1NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns-740.awsdns-28.net 205.251.194.228NOERROR, 4 ms, authoritativenoyes / yesrefused-
ns-740.awsdns-28.net 2600:9000:5302:e400::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

warn

serial 1 · primary ns-1043.awsdns-02.org

Found

Primary (MNAME)
ns-1043.awsdns-02.org
Contact (RNAME)
awsdns-hostmaster.amazon.com
Serial
1
Refresh / retry
7200 s / 900 s
Expire
1209600 s
Negative TTL
30 s

Serial per nameserver

NameserverSerial
ns-1043.awsdns-02.org (205.251.196.19)1
ns-1043.awsdns-02.org (2600:9000:5304:1300::1)1
ns-1986.awsdns-56.co.uk (205.251.199.194)1
ns-1986.awsdns-56.co.uk (2600:9000:5307:c200::1)1
ns-278.awsdns-34.com (205.251.193.22)1
ns-278.awsdns-34.com (2600:9000:5301:1600::1)1
ns-740.awsdns-28.net (205.251.194.228)1
ns-740.awsdns-28.net (2600:9000:5302:e400::1)1

Checks

  • ✓ Serial 1 everywhere #22
    All nameservers serve the same version of the zone.
  • !
    Unusual SOA timers
    negative caching TTL (minimum) 30s is outside 5m–1d (RFC 2308 recommends 1–3 hours). Current values: refresh 2h, retry 15m, expire 14d, negative TTL 30s.
    #23
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns-1043.awsdns-02.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

16 records at the apex

Found

Read from
205.251.196.19:53
TypeValueTTL
SOAns-1043.awsdns-02.org. awsdns-hostmaster.amazon.com. 1 7200 900 1209600 30900
NSns-1043.awsdns-02.org.172800
NSns-1986.awsdns-56.co.uk.172800
NSns-278.awsdns-34.com.172800
NSns-740.awsdns-28.net.172800
A184.194.159.2160
A3.91.167.18460
A52.2.113.5960
MX10 mxa-005c1903.gslb.pphosted.com.300
MX10 mxb-005c1903.gslb.pphosted.com.300
TXT"_uawvftclhf0frtzdfr103geegzjpaxv"3600
TXT"_xvmqbs3ksinllkn84807qe1agv5y709"3600
TXT"adobe-idp-site-verification=55c231740c418433e63324f62a2306e2226694d30c93fce830e9b6b553d75fe7"3600
TXT"google-site-verification=iU8lSGytsHlofrB88AzQX95IGhhtLnC4A38Mbp9v2LU"3600
TXT"v=spf1 mx a a:servers-0.screenconnect.com include:amazonses.com include:mktomail.com ip4:54.240.42.206/31 -all"3600
TXT"w5c67kd890cz3037nl055m2rbm0y51wz"3600

Checks

  • !
    Very low TTLs
    These records have a TTL below 5m, causing extra queries and slower lookups: A (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.
  • 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