radisson.com

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

Registration

info

.com generic · MarkMonitor Inc. · expires 2027-10-10

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
MarkMonitor Inc.
Registered
11 October 1994
Last changed
8 September 2026
Expires
10 October 2027
Status
client delete prohibited, client transfer prohibited, client update prohibited, server delete prohibited, server transfer prohibited, server update prohibited
Registry nameservers
a1-234.akam.net, a28-65.akam.net, a3-66.akam.net, a4-67.akam.net, a7-64.akam.net, a8-65.akam.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 2027-10-10 #3
    The registration is valid until 2027-10-10 (352 days).
  • ✓ Transfer locked #4
    Registry status: client delete prohibited, client transfer prohibited, client update 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

a1-234.akam.net, a28-65.akam.net, a3-66.akam.net, a4-67.akam.net, a7-64.akam.net, a8-65.akam.net

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
a1-234.akam.net, a28-65.akam.net, a3-66.akam.net, a4-67.akam.net, a7-64.akam.net, a8-65.akam.net
NS in the zone
a1-234.akam.net, a28-65.akam.net, a3-66.akam.net, a4-67.akam.net, a7-64.akam.net, a8-65.akam.net
NameserverAddressesNetwork (AS)Glue
a1-234.akam.net193.108.91.234 2600:1401:2::eaAS20940 AKAMAI-ASN1 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
a28-65.akam.net95.100.173.65 2600:1480:d800::41AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
a3-66.akam.net96.7.49.66 2600:1408:1c::42AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
a4-67.akam.net72.246.46.67 2600:1480:9000::43AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
a7-64.akam.net23.61.199.64 2600:1406:32::40AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
a8-65.akam.net2.16.40.65 2600:1403:a::41AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-

Checks

  • ✓ 6 nameservers #6
    Delegated to a1-234.akam.net, a28-65.akam.net, a3-66.akam.net, a4-67.akam.net, a7-64.akam.net, a8-65.akam.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 6 IPv4 /24s and 6 IPv6 /48s.
  • ✓ 2 autonomous systems #11
    The nameservers are spread over: AS20940 (AKAMAI-ASN1 - Akamai International B.V., NL): 1 address; AS21342 (AKAMAI-ASN2 - Akamai International B.V., NL): 11 addresses.
  • i
    All nameserver names under .net
    All nameserver names are under one TLD, so a problem with that TLD also makes the nameservers unreachable. Some operators use names under two TLDs for extra resilience.
    #12
  • ✓ All reachable over IPv6 #13
    Every nameserver has an IPv6 address.

Nameservers

warn

12 of 12 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
a1-234.akam.net 193.108.91.234NOERROR, 3 ms, authoritativenoyes / yesrefused41824.9
a1-234.akam.net 2600:1401:2::eaNOERROR, 4 ms, authoritativenoyes / yesrefused41824.9
a28-65.akam.net 95.100.173.65NOERROR, 3 ms, authoritativenoyes / yesrefused48878.31
a28-65.akam.net 2600:1480:d800::41NOERROR, 4 ms, authoritativenoyes / yesrefused48878.32
a3-66.akam.net 96.7.49.66NOERROR, 4 ms, authoritativenoyes / yesrefused41824.6
a3-66.akam.net 2600:1408:1c::42NOERROR, 4 ms, authoritativenoyes / yesrefused41824.8
a4-67.akam.net 72.246.46.67NOERROR, 4 ms, authoritativenoyes / yesrefused48878.31
a4-67.akam.net 2600:1480:9000::43NOERROR, 4 ms, authoritativenoyes / yesrefused48878.30
a7-64.akam.net 23.61.199.64NOERROR, 4 ms, authoritativenoyes / yesrefused41824.8
a7-64.akam.net 2600:1406:32::40NOERROR, 4 ms, authoritativenoyes / yesrefused41824.7
a8-65.akam.net 2.16.40.65NOERROR, 3 ms, authoritativenoyes / yesrefused48878.27
a8-65.akam.net 2600:1403:a::41NOERROR, 3 ms, authoritativenoyes / yesrefused48878.29

Checks

  • ✓ All respond #14
    All 12 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.
  • !
    Software version disclosed
    These nameservers report their software version via version.bind/version.server, which helps attackers find known vulnerabilities: a1-234.akam.net: "41824.9"; a28-65.akam.net: "48878.31"; a28-65.akam.net: "48878.32"; a3-66.akam.net: "41824.6"; a3-66.akam.net: "41824.8"; a4-67.akam.net: "48878.31"; a4-67.akam.net: "48878.30"; a7-64.akam.net: "41824.8"; a7-64.akam.net: "41824.7"; a8-65.akam.net: "48878.27"; a8-65.akam.net: "48878.29". Hide or replace the version string.
    #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 2022070714 · primary a1-234.akam.net

Found

Primary (MNAME)
a1-234.akam.net
Contact (RNAME)
hostmaster.rezidor.com
Serial
2022070714
Refresh / retry
3600 s / 3600 s
Expire
604800 s
Negative TTL
600 s

Serial per nameserver

NameserverSerial
a1-234.akam.net (193.108.91.234)2022070714
a1-234.akam.net (2600:1401:2::ea)2022070714
a28-65.akam.net (95.100.173.65)2022070714
a28-65.akam.net (2600:1480:d800::41)2022070714
a3-66.akam.net (96.7.49.66)2022070714
a3-66.akam.net (2600:1408:1c::42)2022070714
a4-67.akam.net (72.246.46.67)2022070714
a4-67.akam.net (2600:1480:9000::43)2022070714
a7-64.akam.net (23.61.199.64)2022070714
a7-64.akam.net (2600:1406:32::40)2022070714
a8-65.akam.net (2.16.40.65)2022070714
a8-65.akam.net (2600:1403:a::41)2022070714

Checks

  • ✓ Serial 2022070714 everywhere #22
    All nameservers serve the same version of the zone.
  • !
    Unusual SOA timers
    retry 1h should be shorter than refresh 1h. Current values: refresh 1h, retry 1h, expire 7d, negative TTL 10m.
    #23
  • ✓ Primary is a public nameserver #24
    The primary nameserver a1-234.akam.net is one of the listed nameservers.
  • ✓ Contact hostmaster@rezidor.com #25
    The SOA RNAME hostmaster.rezidor.com means hostmaster@rezidor.com.
  • ✓ Date-based serial #26
    The serial 2022070714 follows the YYYYMMDDnn convention (2022-07-07).

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

19 records at the apex

Found

Read from
193.108.91.234:53
TypeValueTTL
SOAa1-234.akam.net. hostmaster.rezidor.com. 2022070714 3600 3600 604800 6003600
NSa3-66.akam.net.3600
NSa1-234.akam.net.3600
NSa4-67.akam.net.3600
NSa8-65.akam.net.3600
NSa7-64.akam.net.3600
NSa28-65.akam.net.3600
A104.102.16.23920
MX10 radissonhotels.in.tmes.trendmicro.eu.3600
TXT"yandex-verification: 2c9d91ea2170534b"3600
TXT"knowbe4-site-verification=a15db17b6e62b1ded7a9363b19d90606"3600
TXT"S0shhYsqjGz9CLVaBKx2C8Cg8dMORllOO9dlgkBQnHQ="3600
TXT"adobe-idp-site-verification=9315089c4b3efc289f8a4784eda956fdff914eace9dcc8b19ae15233ea22dfb3"3600
TXT"doR3rRve7grIlR6cHTT+t959irrmGbFpJ6yNRrPxBfnD1oDQSdKvcF8MQEUAS5SipelkQmyROl2Oj3rMylDoOQ=="3600
TXT"v=spf1 mx a ip4:52.208.166.252 include:spf.rezidor.com include:spf.mailjet.com include:spf.protection.outlook.com include:spf.tmes.trendmicro.com include:spf_3a.oracleindustry.com ip4:128.177.144.7 ip4:128.177.154.7 ip4:65.221.28.5 -all"3600
TXT"i4r1wPnaXbh8pgYHjSRkr+D1g3g68MqcvrmwoaRFrH8="3600
TXT"docusign=d0c3e2b2-7c2d-4045-ba38-8176d15566cf"3600
TXT"MS=ms39626875"3600
TXT"tmes=c50b417fc9352077f0c6910b02ce9b26"3600

Checks

  • !
    Very low TTLs
    These records have a TTL below 5m, causing extra queries and slower lookups: A (20s). Low TTLs are useful just before a planned change. The NS TTL at the parent is 2d and in the zone 1h; 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