supermicro.com

Checked 22 October 2026, 10:53 UTC · via 8.8.8.8
!Passed with warnings
23 passed 3 warnings 0 failed 5 info

Registration

info

.com generic · Network Solutions, LLC · expires 2034-04-24

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
Network Solutions, LLC
Registered
23 April 1996
Last changed
24 April 2024
Expires
24 April 2034
Status
client transfer prohibited
Registry nameservers
ns1.pbi.net, ns2.pbi.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 2034-04-24 #3
    The registration is valid until 2034-04-24 (2740 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.pbi.net, ns2.pbi.net

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
ns1.pbi.net, ns2.pbi.net
NS in the zone
ns1.pbi.net, ns2.pbi.net
NameserverAddressesNetwork (AS)Glue
ns1.pbi.net151.164.1.1AS7018 ATT-INTERNET4 - AT&T Enterprises, LLC, US-
ns2.pbi.net151.164.11.218AS7018 ATT-INTERNET4 - AT&T Enterprises, LLC, US-

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: ns1.pbi.net, ns2.pbi.net.
    #6
  • ✓ 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 2 IPv4 /24s and 0 IPv6 /48s.
  • i
    All nameservers in one AS
    All nameserver addresses are announced by one network operator (AS7018 (ATT-INTERNET4 - AT&T Enterprises, LLC, US): 2 addresses). An outage or attack on that network affects all nameservers; large anycast providers mitigate this, but a secondary DNS provider adds independence.
    #11
  • 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
  • !
    No IPv6
    None of the nameservers has an IPv6 address, so IPv6-only resolvers can't reach them.
    #13

Nameservers

pass

2 of 2 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns1.pbi.net 151.164.1.1NOERROR, 113 ms, authoritativenoyes / yesrefused-
ns2.pbi.net 151.164.11.218NOERROR, 130 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 2007111447 · primary ns1.pbi.net

Found

Primary (MNAME)
ns1.pbi.net
Contact (RNAME)
postmaster.pbi.net
Serial
2007111447
Refresh / retry
3600 s / 900 s
Expire
604800 s
Negative TTL
7200 s

Serial per nameserver

NameserverSerial
ns1.pbi.net (151.164.1.1)2007111447
ns2.pbi.net (151.164.11.218)2007111447

Checks

  • ✓ Serial 2007111447 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 1h, retry 15m, expire 7d, negative TTL 2h.
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns1.pbi.net is one of the listed nameservers.
  • ✓ Contact postmaster@pbi.net #25
    The SOA RNAME postmaster.pbi.net means postmaster@pbi.net.
  • ✓ Date-based serial #26
    The serial 2007111447 follows the YYYYMMDDnn convention (2007-11-14).

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

30 records at the apex

Found

Read from
151.164.1.1:53
TypeValueTTL
SOAns1.pbi.net. postmaster.pbi.net. 2007111447 3600 900 604800 72007200
NSns2.pbi.net.7200
NSns1.pbi.net.7200
A207.212.57.12460
MX10 mgb.supermicro.com.60
MX10 mga.supermicro.com.60
TXT"vertexinc-cloud-9382bafc-0ca3-48d8-8e99-727f4e9dae10"60
TXT"_globalsign-domain-verification=BahbT-Pu-HaLP9bBimZ0MGe-4CPc4Z_MXqKNUajBmF"60
TXT"v517rae9b2v7kt4d9jfr0627k"60
TXT"ca3-7cedef3fdffc4454a61c3860777e0837"60
TXT"MS=32A1E2B68D4DCD4C3DEF86C2C43B82FA837E3B44"60
TXT"MS=ms37928114"60
TXT"GLOBALSIGN-DOMAIN-VERIFICATION=A902965154557C80299DEF8985206132"60
TXT"globalsign-domain-verification=625a37dfb2540e502b3ad6baa0c136b1"60
TXT"3lotvm1c71eup1kbm882ak79kb"60
TXT"apple-domain-verification=PdGj4rOJS6QCh3HW"60
TXT"tr1gh2k5qa1lm8joi4o8h1r8ml"60
TXT"google-site-verification=JGqcBEZyxBGFrBjwgCJV7N1IPK936Wd9Iok1dM0by0U"60
TXT"chcMow+4LlRmeI0GDl0YHJwsFX1e+ef3/40w8aZwjgjbmI7SFwDbqXXerZJoXtEliv5TqLy5hhMk9cJV9EAoUQ=="60
TXT"successfactors-site-verification=N2MzN2VkYTA4YWU4MTM2MTlmZWQ3MGE1NDgyNjg2ZDM5ZmVhYTBhNTBiNTVmMjk4YjBiY2IyM2RkZjJjZGNmOA=="60
TXT"tmfr71148sskbtcj4c90u56kln"60
TXT"smartsheet-site-validation=XCOwaotArb20tsU9Ub-LUdNP50azQgEJ"60
TXT"v=spf1 include:spf.supermicro.com include:spf.supermicro.com.tw include:spf.supermicro.nl include:spf.protection.outlook.com include:_net1.supermicro.com include:_spf-dc4.sapsf.com include:_spf.salesforce.com include:6669972.spf05.hubspotemail.net -all"60
TXT"cursor-domain-verification-2apz7s=L1Xq44T329WfmKhkJmUXva7jb"60
TXT"sppp3npun323n5evagnthek13m"60
TXT"domain-verification=f2cd3cb86219f4842c43c64e6788d832a52ed89e4cb082e2a4c7ee5e122ba554"60
TXT"dcvl1hhcj47d56kfobm1ol2h9u"60
TXT"_ge78iul4l2ptwwm16ww63exo0n3oyno"60
TXT"emf81tdm9u6i9nf1te7jsckt6e"60
TXT"n540uvim8mluv682bc9poigqtq"60

Checks

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