roboform.com

Checked 22 October 2026, 10:32 UTC · via 8.8.8.8
!Passed with warnings
26 passed 3 warnings 0 failed 2 info

Registration

info

.com generic · NameCheap, Inc. · expires 2033-07-13

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
NameCheap, Inc.
Registered
13 July 1999
Last changed
14 June 2024
Expires
13 July 2033
Status
client transfer prohibited
Registry nameservers
ns1.siber.com, ns2.siber.com, ns3.siber.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 2033-07-13 #3
    The registration is valid until 2033-07-13 (2455 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

warn

ns1.siber.com, ns2.siber.com, ns3.siber.com

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
ns1.siber.com, ns2.siber.com, ns3.siber.com
NS in the zone
ns1.siber.com, ns2.siber.com, ns3.siber.com
NameserverAddressesNetwork (AS)Glue
ns1.siber.com216.218.135.2AS6939 HURRICANE - Hurricane Electric LLC, US216.218.135.2
ns2.siber.com38.127.147.66AS174 COGENT-174 - Cogent Communications, LLC, US38.127.147.66
ns3.siber.com216.66.39.209AS6939 HURRICANE - Hurricane Electric LLC, US216.66.39.209

Checks

  • ✓ 3 nameservers #6
    Delegated to ns1.siber.com, ns2.siber.com, ns3.siber.com.
  • ✓ 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 3 IPv4 /24s and 0 IPv6 /48s.
  • ✓ 2 autonomous systems #11
    The nameservers are spread over: AS174 (COGENT-174 - Cogent Communications, LLC, US): 1 address; AS6939 (HURRICANE - Hurricane Electric LLC, US): 2 addresses.
  • 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
  • !
    No IPv6
    None of the nameservers has an IPv6 address, so IPv6-only resolvers can't reach them.
    #13

Nameservers

warn

3 of 3 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns1.siber.com 216.218.135.2NOERROR, 176 ms, authoritativenoyes / yesrefusedBIND 9.18.35
ns2.siber.com 38.127.147.66NOERROR, 104 ms, authoritativenoyes / yesrefusedBIND 9.18.35
ns3.siber.com 216.66.39.209NOERROR, 112 ms, authoritativenoyes / yesrefusedBIND 9.18.35

Checks

  • ✓ All respond #14
    All 3 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: ns1.siber.com: "BIND 9.18.35"; ns2.siber.com: "BIND 9.18.35"; ns3.siber.com: "BIND 9.18.35". 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

pass

serial 2026100800 · primary ns1.siber.com

Found

Primary (MNAME)
ns1.siber.com
Contact (RNAME)
vadik-dom.siber.com
Serial
2026100800
Refresh / retry
10800 s / 3600 s
Expire
1814400 s
Negative TTL
3600 s

Serial per nameserver

NameserverSerial
ns1.siber.com (216.218.135.2)2026100800
ns2.siber.com (38.127.147.66)2026100800
ns3.siber.com (216.66.39.209)2026100800

Checks

  • ✓ Serial 2026100800 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 3h, retry 1h, expire 21d, negative TTL 1h.
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns1.siber.com is one of the listed nameservers.
  • ✓ Contact vadik-dom@siber.com #25
    The SOA RNAME vadik-dom.siber.com means vadik-dom@siber.com.
  • ✓ Date-based serial #26
    The serial 2026100800 follows the YYYYMMDDnn convention (2026-10-08).

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

pass

14 records at the apex

Found

Read from
216.218.135.2:53
TypeValueTTL
SOAns1.siber.com. vadik-dom.siber.com. 2026100800 10800 3600 1814400 3600300
NSns1.siber.com.300
NSns2.siber.com.300
NSns3.siber.com.300
A38.70.11.196300
A216.66.39.196300
A67.208.88.196300
MX17 mail-2.roboform.com.300
MX20 mail.siber.com.300
MX10 mail.roboform.com.300
MX15 mail-3.roboform.com.300
TXT"v=spf1 ip4:67.208.88.192/27 ip4:216.66.39.192/27 ip4:38.70.11.0/24 include:servers.mcsv.net -all"300
TXT"google-site-verification=k0A1PBstncPpi-jSRhgJwlSUrufKUM3o-N65iyEA-no"300
CAA0 issuewild "sectigo.com"300

Checks

  • ✓ TTLs within range #32
    TTLs: A 5m, MX 5m, NS 5m. The NS TTL at the parent is 2d and in the zone 5m; 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.
  • ✓ CAA restricts issuance #35
    Certificates may be issued by: sectigo.com.