universe.com

Checked 22 October 2026, 11:15 UTC · via 8.8.8.8
!Passed with warnings
27 passed 1 warning 0 failed 3 info

Registration

info

.com generic · CSC Corporate Domains, Inc. · expires 2027-06-09

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
CSC Corporate Domains, Inc.
Registered
10 June 1997
Last changed
5 June 2025
Expires
9 June 2027
Status
client transfer prohibited
Registry nameservers
ns-1231.awsdns-25.org, ns-1841.awsdns-38.co.uk, ns-407.awsdns-50.com, ns-610.awsdns-12.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 2027-06-09 #3
    The registration is valid until 2027-06-09 (229 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-1231.awsdns-25.org, ns-1841.awsdns-38.co.uk, ns-407.awsdns-50.com, ns-610.awsdns-12.net

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
ns-1231.awsdns-25.org, ns-1841.awsdns-38.co.uk, ns-407.awsdns-50.com, ns-610.awsdns-12.net
NS in the zone
ns-1231.awsdns-25.org, ns-1841.awsdns-38.co.uk, ns-407.awsdns-50.com, ns-610.awsdns-12.net
NameserverAddressesNetwork (AS)Glue
ns-1231.awsdns-25.org205.251.196.207 2600:9000:5304:cf00::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US-
ns-1841.awsdns-38.co.uk205.251.199.49 2600:9000:5307:3100::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US-
ns-407.awsdns-50.com205.251.193.151 2600:9000:5301:9700::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US205.251.193.151 2600:9000:5301:9700::1
ns-610.awsdns-12.net205.251.194.98 2600:9000:5302:6200::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US-

Checks

  • ✓ 4 nameservers #6
    Delegated to ns-1231.awsdns-25.org, ns-1841.awsdns-38.co.uk, ns-407.awsdns-50.com, ns-610.awsdns-12.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-1231.awsdns-25.org 205.251.196.207NOERROR, 3 ms, authoritativenoyes / yesrefused-
ns-1231.awsdns-25.org 2600:9000:5304:cf00::1NOERROR, 4 ms, authoritativenoyes / yesrefused-
ns-1841.awsdns-38.co.uk 205.251.199.49NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns-1841.awsdns-38.co.uk 2600:9000:5307:3100::1NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns-407.awsdns-50.com 205.251.193.151NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns-407.awsdns-50.com 2600:9000:5301:9700::1NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns-610.awsdns-12.net 205.251.194.98NOERROR, 4 ms, authoritativenoyes / yesrefused-
ns-610.awsdns-12.net 2600:9000:5302:6200::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 1 · primary ns-1841.awsdns-38.co.uk

Found

Primary (MNAME)
ns-1841.awsdns-38.co.uk
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-1231.awsdns-25.org (205.251.196.207)1
ns-1231.awsdns-25.org (2600:9000:5304:cf00::1)1
ns-1841.awsdns-38.co.uk (205.251.199.49)1
ns-1841.awsdns-38.co.uk (2600:9000:5307:3100::1)1
ns-407.awsdns-50.com (205.251.193.151)1
ns-407.awsdns-50.com (2600:9000:5301:9700::1)1
ns-610.awsdns-12.net (205.251.194.98)1
ns-610.awsdns-12.net (2600:9000:5302:6200::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-1841.awsdns-38.co.uk 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

36 records at the apex

Found

Read from
205.251.196.207:53
TypeValueTTL
SOAns-1841.awsdns-38.co.uk. awsdns-hostmaster.amazon.com. 1 7200 900 1209600 86400900
NSns-1231.awsdns-25.org.172800
NSns-1841.awsdns-38.co.uk.172800
NSns-407.awsdns-50.com.172800
NSns-610.awsdns-12.net.172800
A151.101.130.87300
A151.101.2.87300
A151.101.66.87300
A151.101.194.87300
MX10 mxa-002d0101.gslb.pphosted.com.3600
MX10 mxb-002d0101.gslb.pphosted.com.3600
TXT"MS=ms58378740"3600
TXT"_globalsign-domain-verification=B57sRQpmte4G4w-gavZbVNmmNsMxGp5kcL19UP2599"3600
TXT"_globalsign-domain-verification=GXpUUS49HB9rYWZEmxJFtZdS61weLMlf91w9Dn-5O0"3600
TXT"_globalsign-domain-verification=ep7QTtssv3V-iKxINGjwkXwAl-lEh-Iy-RXdRqioUi"3600
TXT"adobe-idp-site-verification=8afa8369ac12bcc044a7b99a167517c746c7613b2bd363dc0e39ec93a59e70a8"3600
TXT"airtable-verification=d3956929bc0bb300e071f6aed2fc3564"3600
TXT"anthropic-domain-verification-g1vqpy=4oWHtr89GBr2TSBj6weiDsKTl"3600
TXT"brave-ledger-verification=1483c5640fa379817cd5611ae6924813681d9300158ef56e599b1f122e4d7239"3600
TXT"docker-verification=16ea5335-7841-499e-8bb8-b21c6151a0d5"3600
TXT"facebook-domain-verification=w0otgv585c8oi50y8awlvl42pnsblb"3600
TXT"fastly-domain-delegation-nrzah3ppmuuuwdrrieom-816818-2024-09-30"3600
TXT"figma-domain-verification=3c0b959a8284b6d7d10fd009fa5c6415f54b9e3c7f6170952d5b8f90b3601ada-1779832641"3600
TXT"globalsign-domain-verification=1uVDoDyUU_CTfAXdT_LXzhTw7HOTbB4OR8FrRCRlJC"3600
TXT"globalsign-domain-verification=IUAylHRA1OTIjHtv-r5Py156P4CXImu7Q3D7nwuTUx"3600
TXT"globalsign-domain-verification=wvdz6fqNpGYoUxoyCbEUOYrkz-Z8Nh2zXAoS8lsLRh"3600
TXT"google-gws-recovery-domain-verification=42607590"3600
TXT"google-gws-recovery-domain-verification=44200220"3600
TXT"google-site-verification=b1Ikzbl18RhKq4wZRY5PPv0aUjT-rJDUSegNkIxrZdk"3600
TXT"google-site-verification=x4TIAaKipTGtEBQyZfgrpBYZx9Wwd8IT7LZPUOvspLw"3600
TXT"hes=3e378274af10d1d3fc948b8317d13dd7"3600
TXT"knowbe4-site-verification=50d3cd7aa8ec56d6ce55423258048f9c"3600
TXT"miro-verification=ba5a94c316c990590d82bc18156ffb5b6c92b64b"3600
TXT"smartsheet-site-validation=RdzLdY-qpS5Kt8T98wXkNFEQEHkWYsw1"3600
TXT"v=spf1 include:spf.mandrillapp.com include:aspmx.pardot.com include:mail.zendesk.com include:spf.protection.outlook.com include:amazonses.com include:spf-002d0101.pphosted.com ~all"3600
TXT"zscaler-verification-101843-26012026-6vki3d13pS"3600

Checks

  • ✓ TTLs within range #32
    TTLs: A 5m, MX 1h, NS 2d.
  • ✓ 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