steelcase.com

.com generic · Network Solutions, LLC · expires 2030-02-15

Found

TLD

.com (generic)

ICANN policies apply

yes

Registrar

Network Solutions, LLC

Registered

14 February 1995

Last changed

17 December 2024

Expires

15 February 2030

Status

client transfer prohibited

Registry nameservers

cbru.br.ns.els-gms.att.net, cmtu.mt.ns.els-gms.att.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 2030-02-15 #3

  The registration is valid until 2030-02-15 (1211 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.

cbru.br.ns.els-gms.att.net, cmtu.mt.ns.els-gms.att.net

Found

Parent zone

com

Delegation from

a.gtld-servers.net (192.5.6.30)

NS at the parent

cbru.br.ns.els-gms.att.net, cmtu.mt.ns.els-gms.att.net

NS in the zone

cbru.br.ns.els-gms.att.net, cmtu.mt.ns.els-gms.att.net

Checks

• i

  2 nameservers

  Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: cbru.br.ns.els-gms.att.net, cmtu.mt.ns.els-gms.att.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.
• i

  One address family in one network

  all IPv6 addresses are in 2001:1890:1ff::/48, while the other address family is spread over several networks.

  #10
• i

  All nameservers in one AS

  All nameserver addresses are announced by one network operator (AS7018 (ATT-INTERNET4 - AT&T Enterprises, LLC, US): 4 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
• ✓ All reachable over IPv6 #13

  Every nameserver has an IPv6 address.

serial 2012078575 · primary us-grrns05.steelcase.com

Found

Primary (MNAME)

us-grrns05.steelcase.com

Contact (RNAME)

dnsadmin.steelcase.com

Serial

2012078575

Refresh / retry

1200 s / 600 s

Expire

1209600 s

Negative TTL

900 s

Serial per nameserver

Checks

• ✓ Serial 2012078575 everywhere #22

  All nameservers serve the same version of the zone.
• ✓ Timers within recommendations #23

  SOA refresh 20m, retry 10m, expire 14d, negative TTL 15m.
• i

  Hidden master

  The primary nameserver us-grrns05.steelcase.com is not listed as a nameserver: a hidden master that only feeds the public secondaries. That is a common setup; make sure it is not reachable for zone transfers from outside.

  #24
• ✓ Contact dnsadmin@steelcase.com #25

  The SOA RNAME dnsadmin.steelcase.com means dnsadmin@steelcase.com.
• ✓ Timestamp serial #26

  The serial 2012078575 is a Unix timestamp (2033-10-04 22:42 UTC).

48 records at the apex

Found

Read from

68.94.156.132:53

Checks

• ✓ TTLs within range #32

  TTLs: A 15m, MX 15m, NS 15m. The NS TTL at the parent is 2d and in the zone 15m; 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