mitel.com

Checked 22 October 2026, 09:51 UTC · via 8.8.8.8
!Passed with warnings
26 passed 2 warnings 0 failed 3 info

Registration

info

.com generic · MarkMonitor Inc. · expires 2028-08-05

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
MarkMonitor Inc.
Registered
6 August 1990
Last changed
4 July 2026
Expires
5 August 2028
Status
client delete prohibited, client transfer prohibited, client update prohibited
Registry nameservers
ns-1444.awsdns-52.org, ns-16.awsdns-02.com, ns-1936.awsdns-50.co.uk, ns-521.awsdns-01.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 2028-08-05 #3
    The registration is valid until 2028-08-05 (652 days).
  • ✓ Transfer locked #4
    Registry status: client delete prohibited, client transfer prohibited, client update prohibited.
  • ✓ Registry and delegation match #5
    The nameservers registered at the registry are the ones published in DNS.

Delegation

info

ns-1444.awsdns-52.org, ns-16.awsdns-02.com, ns-1936.awsdns-50.co.uk, ns-521.awsdns-01.net

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
ns-1444.awsdns-52.org, ns-16.awsdns-02.com, ns-1936.awsdns-50.co.uk, ns-521.awsdns-01.net
NS in the zone
ns-1444.awsdns-52.org, ns-16.awsdns-02.com, ns-1936.awsdns-50.co.uk, ns-521.awsdns-01.net
NameserverAddressesNetwork (AS)Glue
ns-1444.awsdns-52.org205.251.197.164 2600:9000:5305:a400::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US-
ns-16.awsdns-02.com205.251.192.16 2600:9000:5300:1000::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US205.251.192.16 2600:9000:5300:1000::1
ns-1936.awsdns-50.co.uk205.251.199.144 2600:9000:5307:9000::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US-
ns-521.awsdns-01.net205.251.194.9 2600:9000:5302:900::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US-

Checks

  • ✓ 4 nameservers #6
    Delegated to ns-1444.awsdns-52.org, ns-16.awsdns-02.com, ns-1936.awsdns-50.co.uk, ns-521.awsdns-01.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-1444.awsdns-52.org 205.251.197.164NOERROR, 3 ms, authoritativenoyes / yesrefused-
ns-1444.awsdns-52.org 2600:9000:5305:a400::1NOERROR, 4 ms, authoritativenoyes / yesrefused-
ns-16.awsdns-02.com 205.251.192.16NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns-16.awsdns-02.com 2600:9000:5300:1000::1NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns-1936.awsdns-50.co.uk 205.251.199.144NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns-1936.awsdns-50.co.uk 2600:9000:5307:9000::1NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns-521.awsdns-01.net 205.251.194.9NOERROR, 3 ms, authoritativenoyes / yesrefused-
ns-521.awsdns-01.net 2600:9000:5302:900::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-521.awsdns-01.net

Found

Primary (MNAME)
ns-521.awsdns-01.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-1444.awsdns-52.org (205.251.197.164)1
ns-1444.awsdns-52.org (2600:9000:5305:a400::1)1
ns-16.awsdns-02.com (205.251.192.16)1
ns-16.awsdns-02.com (2600:9000:5300:1000::1)1
ns-1936.awsdns-50.co.uk (205.251.199.144)1
ns-1936.awsdns-50.co.uk (2600:9000:5307:9000::1)1
ns-521.awsdns-01.net (205.251.194.9)1
ns-521.awsdns-01.net (2600:9000:5302:900::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-521.awsdns-01.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

warn

31 records at the apex

Found

Read from
205.251.197.164:53
TypeValueTTL
SOAns-521.awsdns-01.net. awsdns-hostmaster.amazon.com. 1 7200 900 1209600 86400900
NSns-1444.awsdns-52.org.172800
NSns-16.awsdns-02.com.172800
NSns-1936.awsdns-50.co.uk.172800
NSns-521.awsdns-01.net.172800
A104.18.20.11260
A104.18.21.11260
MX0 mitel-com.mail.protection.outlook.com.3600
TXT"00dd0000000eyogeaa"3600
TXT"3EA+S/1bM49fO8mrKzUUyEnjFu4YRqhJ4IUv6YweSEe2cFZIa74Wp93kLiCFMB3oxspMQF+Ro8zxynX7jYGQBg=="3600
TXT"MS=ms94573260"3600
TXT"_globalsign-domain-verification=cvzudUSBhMY8hRS7IP7p9RJPtfz6pOiqiZnxw4TS3B"3600
TXT"adobe-idp-site-verification=dd84f9396175cc9bdc522697fb5a3c3ccf1f4c60d7ac70609decc1e8b408cf88"3600
TXT"anthropic-domain-verification-3wm2r5=7fkIsDSdXtS6k8mTtSUvzUsu9"3600
TXT"asv=3e9d42069410c607ea47d77b964bcba3"3600
TXT"atlassian-domain-verification=zr/zNd3h84JDhQaEin42nIsaoPZLEL/GNWHoxPEMmjqZX2cIYSrOKjfowEmoAur+"3600
TXT"docusign=1fb9856b-bc9b-4f79-8093-e68e1d7e9bc9"3600
TXT"docusign=2ea80638-7da6-4d15-9d93-8d27fe337488"3600
TXT"docusign=55f4947f-f9b6-45fe-98d3-d260b646f5ac"3600
TXT"docusign=94f73964-92e5-4de3-8662-d8de7eab7c2b"3600
TXT"docusign=e9f69be7-6e09-47f9-9fb3-389ddbcf0c3a"3600
TXT"facebook-domain-verification=f0efgj9x05yzokda8vyg29axfckpe9"3600
TXT"google-site-verification=NRQI40X_BJuefebiq1LuUM0c6OIPV8DNaVGPLqePFI4"3600
TXT"google-site-verification=sFOGgZM4nfF6w6yNonP4NHoKCSgGXvaWH2DGA4jeGBY"3600
TXT"google-site-verification=tn6s0yB5FK7HM5iksNq6D4gz776V8SNSy6Kziyuag6k"3600
TXT"moxtra-site-verification=T5zg7ufOVrYR0kSAIv6fHqUmMtriyCOS3WZpVEIJrX5"3600
TXT"reachdesk-verification=ULwoxHaCmtqJf4DtjsLIfRUHMrQGaTzou4ciHtg1MWCuTOW4Y8CGnHw3wmbiJzEZ"3600
TXT"reftab-domain-verification=968060b9babb22c3bb8881afcd3c8c29"3600
TXT"smartsheet-site-validation=IFFm0GbwnLlf-MVmIJy7YS4-B65YhYBX"3600
TXT"v=spf1 include:spf.protection.outlook.com ip4:34.226.25.69 ip4:52.7.243.188 ip4:15.223.111.100 ip4:107.21.104.61 include:spf.mandrillapp.com include:email.influitive.com include:mktomail.com ~all"3600
TXT"zoom-domain-verification=ZOOM_verify_e800050d2a42428ab9ce403f409488a3"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