mdaemon.com

Checked 22 October 2026, 09:44 UTC · via 8.8.8.8
✗Problems found
23 passed 2 warnings 1 failed 5 info

Registration

info

.com generic · Network Solutions, LLC · expires 2026-12-28

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
Network Solutions, LLC
Registered
29 December 1996
Last changed
29 October 2025
Expires
28 December 2026
Status
client transfer prohibited
Registry nameservers
dns1.altn.com, dns2.altn.com
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 2026-12-28 #3
    The registration is valid until 2026-12-28 (66 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

fail

dns1.altn.com, dns2.altn.com

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
dns1.altn.com, dns2.altn.com
NS in the zone
dns1.altn.com, dns2.altn.com, ec2amaz-cbir0nl
NameserverAddressesNetwork (AS)Glue
dns1.altn.com44.206.182.14AS14618 AMAZON-AES - Amazon.com, Inc., US44.206.182.14
dns2.altn.com54.146.171.8AS16509 AMAZON-02 - Amazon.com, Inc., US54.146.171.8
ec2amaz-cbir0nl (zone only)(does not resolve)-

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: dns1.altn.com, dns2.altn.com.
    #6
  • !
    NS sets differ
    The nameservers at the parent and in the zone should be the same. Only in the zone: ec2amaz-cbir0nl. dns1.altn.com, dns2.altn.com report NS dns1.altn.com dns2.altn.com ec2amaz-cbir0nl.
    #7
  • ✓ No glue needed #8
    All nameservers are outside the zone, so no glue records are needed.
  • ✗
    Nameserver names don't resolve
    These nameservers have no A or AAAA record, so they can't be reached (lame delegation): ec2amaz-cbir0nl.
    #9
  • ✓ Nameservers in different networks #10
    The nameservers are spread over 2 IPv4 /24s and 0 IPv6 /48s.
  • ✓ 2 autonomous systems #11
    The nameservers are spread over: AS14618 (AMAZON-AES - Amazon.com, Inc., US): 1 address; AS16509 (AMAZON-02 - Amazon.com, Inc., US): 1 address.
  • i
    All nameserver names under .com
    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
  • i
    Partly IPv6
    These nameservers have no IPv6 address: dns1.altn.com, dns2.altn.com.
    #13

Nameservers

pass

2 of 2 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
dns1.altn.com 44.206.182.14NOERROR, 98 ms, authoritativenoyes / yesrefused-
dns2.altn.com 54.146.171.8NOERROR, 98 ms, authoritativenoyes / yesrefused-

Checks

  • ✓ All respond #14
    All 2 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 2022102383 · primary dns1.altn.com

Found

Primary (MNAME)
dns1.altn.com
Contact (RNAME)
admin.altn.com
Serial
2022102383
Refresh / retry
3600 s / 600 s
Expire
604800 s
Negative TTL
3600 s

Serial per nameserver

NameserverSerial
dns1.altn.com (44.206.182.14)2022102383
dns2.altn.com (54.146.171.8)2022102383

Checks

  • ✓ Serial 2022102383 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 1h, retry 10m, expire 7d, negative TTL 1h.
  • ✓ Primary is a public nameserver #24
    The primary nameserver dns1.altn.com is one of the listed nameservers.
  • ✓ Contact admin@altn.com #25
    The SOA RNAME admin.altn.com means admin@altn.com.
  • ✓ Date-based serial #26
    The serial 2022102383 follows the YYYYMMDDnn convention (2022-10-23).

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

12 records at the apex

Found

Read from
44.206.182.14:53
TypeValueTTL
SOAdns1.altn.com. admin.altn.com. 2022102383 3600 600 604800 36003600
NSdns2.altn.com.3600
NSec2amaz-cbir0nl.3600
NSdns1.altn.com.3600
A23.227.38.653600
MX10 sg.mdaemon.com.3600
MX20 smtp1.mdaemon.com.3600
TXT"MS=AC88285DE155A0F21AF95C82D2482AE4B5C4B066"3600
TXT"_w70e228vkj5cwf356b255hyh9s6lo4r"3600
TXT"anthropic-domain-verification-wb5e07=x8Wl5Lq1LhAbQ9CAAg1ftM6Jw"3600
TXT"_8fo9715kff5kyagbvzxjmc8sfs8mhy5"3600
TXT"v=spf1 mx a:sg.mdaemon.com a:r2d2.mdaemon.com a:mail.mdaemon.com a:mail1.mdaemon.com a:smtp1.mdaemon.com ip6:2607:fdb8:1:c10::132 ip6:2607:fdb8:1:c10::68 include:6572702.spf06.hubspotemail.net include:xenforum.net -all"3600

Checks

  • ✓ TTLs within range #32
    TTLs: A 1h, MX 1h, NS 1h. The NS TTL at the parent is 2d and in the zone 1h; resolvers may use either.
  • ✓ 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