radissonhotels.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 2026-12-10

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
MarkMonitor Inc.
Registered
10 December 2000
Last changed
8 November 2025
Expires
10 December 2026
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 2026-12-10 #3
    The registration is valid until 2026-12-10 (49 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, 4 ms, authoritativenoyes / yesrefused41824.7
a1-234.akam.net 2600:1401:2::eaNOERROR, 3 ms, authoritativenoyes / yesrefused41824.9
a28-65.akam.net 95.100.173.65NOERROR, 3 ms, authoritativenoyes / yesrefused48878.30
a28-65.akam.net 2600:1480:d800::41NOERROR, 3 ms, authoritativenoyes / yesrefused48878.29
a3-66.akam.net 96.7.49.66NOERROR, 4 ms, authoritativenoyes / yesrefused41824.8
a3-66.akam.net 2600:1408:1c::42NOERROR, 3 ms, authoritativenoyes / yesrefused41824.4
a4-67.akam.net 72.246.46.67NOERROR, 3 ms, authoritativenoyes / yesrefused48878.26
a4-67.akam.net 2600:1480:9000::43NOERROR, 3 ms, authoritativenoyes / yesrefused48878.29
a7-64.akam.net 23.61.199.64NOERROR, 3 ms, authoritativenoyes / yesrefused41824.9
a7-64.akam.net 2600:1406:32::40NOERROR, 4 ms, authoritativenoyes / yesrefused41824.9
a8-65.akam.net 2.16.40.65NOERROR, 3 ms, authoritativenoyes / yesrefused48878.27
a8-65.akam.net 2600:1403:a::41NOERROR, 3 ms, authoritativenoyes / yesrefused48878.27

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: "41824.7"; a1-234.akam.net: "41824.9"; a28-65.akam.net: "48878.30"; a28-65.akam.net: "48878.29"; a3-66.akam.net: "41824.8"; a3-66.akam.net: "41824.4"; a4-67.akam.net: "48878.26"; a4-67.akam.net: "48878.29"; a7-64.akam.net: "41824.9"; a8-65.akam.net: "48878.27". 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 3040836093 · primary a1-234.akam.net

Found

Primary (MNAME)
a1-234.akam.net
Contact (RNAME)
hostmaster.rezidor.com
Serial
3040836093
Refresh / retry
300 s / 3600 s
Expire
604800 s
Negative TTL
600 s

Serial per nameserver

NameserverSerial
a1-234.akam.net (193.108.91.234)3040836093
a1-234.akam.net (2600:1401:2::ea)3040836093
a28-65.akam.net (95.100.173.65)3040836093
a28-65.akam.net (2600:1480:d800::41)3040836093
a3-66.akam.net (96.7.49.66)3040836093
a3-66.akam.net (2600:1408:1c::42)3040836093
a4-67.akam.net (72.246.46.67)3040836093
a4-67.akam.net (2600:1480:9000::43)3040836093
a7-64.akam.net (23.61.199.64)3040836093
a7-64.akam.net (2600:1406:32::40)3040836093
a8-65.akam.net (2.16.40.65)3040836093
a8-65.akam.net (2600:1403:a::41)3040836093

Checks

  • ✓ Serial 3040836093 everywhere #22
    All nameservers serve the same version of the zone.
  • !
    Unusual SOA timers
    refresh 5m is outside 20m–1d; retry 1h should be shorter than refresh 5m. Current values: refresh 5m, 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.
  • ✓ Timestamp serial #26
    The serial 3040836093 is a Unix timestamp (2066-05-11 20:41 UTC).

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

26 records at the apex

Found

Read from
193.108.91.234:53
TypeValueTTL
SOAa1-234.akam.net. hostmaster.rezidor.com. 3040836093 300 3600 604800 6003600
NSa1-234.akam.net.3600
NSa4-67.akam.net.3600
NSa28-65.akam.net.3600
NSa7-64.akam.net.3600
NSa3-66.akam.net.3600
NSa8-65.akam.net.3600
A104.102.16.23920
MX0 radissonhotels.in.tmes.trendmicro.eu.3600
TXT"docusign=650288ba-d9dc-421d-8592-2d507d551901"60
TXT"onetrust-domain-verification=21af34eab16746a989ce85ed8ff862e8"60
TXT"tmes=8612b6da00992d451e5bcb0f6b0d8320"60
TXT"m76FAtXv2pWKcXLPG7NwR7BpXxo5SUtoZ1XHK9gRTEE="60
TXT"apple-domain-verification=gaBdjh8h0rTDe6Au"60
TXT"MS=ms55195023"60
TXT"amazonses:IQ2BikmmmJk4t6Va6EHC91kFWEjM1+2Z2zGGiYapQn0="60
TXT"atlassian-domain-verification=KX2aLAPZ1iNXTguqChaB9yaOzVmpXWkkjqN68yZOjyaxXYfivmXNjBk53KpUpudc"60
TXT"google-site-verification=3XjU1xiCpaCqu0TWJAF_n0-XiIk5dOxCQD-pSN6cGW4"60
TXT"anthropic-domain-verification-x26k83=tHFLK6OyYuV39yOwxv1Pc5cbe"60
TXT"HEWqEaHE5znFinfNRI8O8YZNI2jSGLRESsxYhrXvRrQ="60
TXT"adobe-idp-site-verification=9315089c4b3efc289f8a4784eda956fdff914eace9dcc8b19ae15233ea22dfb3"60
TXT"facebook-domain-verification=h4ce35te1zqi5hukx67ohi8gg54j58"60
TXT"v=spf1 mx a ip4:52.208.166.252 ip4:93.165.150.78/32 ip4:207.166.86.53 ip4:207.166.92.11 ip4:207.166.94.53 ip4:207.166.95.11 ip4:128.177.144.7 include:spf.protection.outlook.com " "include:spf.rezidor.com include:spf.tmes.trendmicro.com ip4:155.56.208.100 ip4:18.198.35.158 ip4:3.65.86.245 ip4:205.201.128.0/20 ip4:198.2.128.0/18 ip4:148.105.0.0/16 ip4:208.185.229.0/24 ip4:208.185.235.0/24 ip4:62.190.159.144/28 ip4:62.190.59.144/28 " "ip4:128.177.154.7 ip4:65.221.28.5 ip4:87.253.232.0/21 ip4:185.189.236.0/22 ip4:185.211.120.0/22 ip4:185.250.236.0/22 ip4:216.71.96.0/22 ip4:205.201.128.0/20 ip4:198.2.128.0/18 ip4:148.105.8.0/21 ip4:52.254.72.70 ip4:216.119.209.33 ip4:216.119.217.33 " "ip4:199.91.136.28 ip4:149.96.5.209 ip4:149.96.5.7 ip4:149.96.6.7 ip4:149.96.6.3 ip4:149.96.6.2 ip4:149.96.5.2 ip4:149.96.6.209 ip4:149.96.5.3 ip4:149.96.5.6 ip4:199.91.140.28 ip4:149.96.6.6 " "ip4:149.96.14.2 ip4:148.139.0.2 ip4:199.91.141.22 ip4:199.91.141.145 ip4:199.91.141.23 ip4:199.91.140.26 ip4:148.139.2.2 ip4:148.139.3.2 ip4:199.91.139.24 ip4:199.91.140.28 ip4:148.139.1.2 " "ip4:199.91.136.28 ip4:37.98.234.2 ip4:148.139.0.31 ip4:199.91.137.2 ip4:37.98.232.12 ip4:199.91.139.22 ip4:37.98.232.26 ip4:199.91.136.26 ip4:199.91.137.26 ip4:199.91.139.145 " "ip4:199.91.141.24 ip4:148.139.1.31 ip4:149.96.13.2 ip4:37.98.232.2 ip4:199.91.139.23 ip4:37.98.235.2 ip4:149.96.2.26 ip4:149.96.195.2 ip4:149.96.1.26 ip4:148.139.104.16 ip4:149.96.133.2 ip4:149.96.221.2 ip4:148.139.105.17 " "ip4:103.23.67.26 ip4:103.23.65.2 ip4:149.96.220.2 ip4:199.91.136.28 ip4:148.139.105.16 ip4:103.23.64.2 ip4:148.139.104.17 ip4:103.23.66.26 ip4:149.96.194.2 ip4:199.91.140.28 ip4:149.96.132.2 " "ip4:167.89.77.138 ip4:40.113.134.102 ip4:3.210.182.90 ip4:155.56.208.101 ip4:155.56.208.100/30 ip4:167.89.115.56 ip4:167.89.115.83 ip4:167.89.115.52 ip4:167.89.115.120 ip4:50.31.156.96/27 ip4:104.245.209.192/26 ip4:50.31.205.0/24 -all"60
TXT"Dynatrace-site-verification=6ef875f3-76e5-490c-84ff-523a04a5d056__1kve3bmna0ao065i45e1um1m5r"60
TXT"wiz-domain-verification=976e17549ac5ad7a0a9a80aa328e1b090d27d31f69631c7f209ad06885b358a4"60
TXT"apple-domain-verification=7pRVrrdqq81xOmvENMqEmbUMtYI7GI-aOdL5kKkK_eQ"60

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