providesupport.com

ns-426.awsdns-53.com, ns-b.providesupport.com, ns-i.providesupport.com, ns-o.providesupport.com

Found

Parent zone

com

Delegation from

a.gtld-servers.net (192.5.6.30)

NS at the parent

ns-426.awsdns-53.com, ns-b.providesupport.com, ns-i.providesupport.com, ns-o.providesupport.com

NS in the zone

ns-1327.awsdns-37.org, ns-1541.awsdns-00.co.uk, ns-426.awsdns-53.com, ns-677.awsdns-20.net

Checks

• ✓ 4 nameservers #6

  Delegated to ns-426.awsdns-53.com, ns-b.providesupport.com, ns-i.providesupport.com, ns-o.providesupport.com.
• !

  NS sets differ

  The nameservers at the parent and in the zone should be the same. Only at the parent: ns-b.providesupport.com, ns-i.providesupport.com, ns-o.providesupport.com; only in the zone: ns-1327.awsdns-37.org, ns-1541.awsdns-00.co.uk, ns-677.awsdns-20.net. ns-1327.awsdns-37.org, ns-1541.awsdns-00.co.uk, ns-426.awsdns-53.com, ns-677.awsdns-20.net, ns-b.providesupport.com, ns-i.providesupport.com, ns-o.providesupport.com report NS ns-1327.awsdns-37.org ns-1541.awsdns-00.co.uk ns-426.awsdns-53.com ns-677.awsdns-20.net.

  #7
• !

  Glue differs from the zone

  The addresses at the parent (glue) differ from the addresses in the zone: ns-i.providesupport.com (glue 104.129.90.4, zone 142.202.9.104). Update the glue at your registrar.

  #8
• ✓ 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 6 IPv4 /24s and 4 IPv6 /48s.
• ✓ 3 autonomous systems #11

  The nameservers are spread over: AS16509 (AMAZON-02 - Amazon.com, Inc., US): 8 addresses; AS24940 (HETZNER-AS - Hetzner Online GmbH, DE): 1 address; AS398323 (PSBOS-1 - Provide Support 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
• i

  Partly IPv6

  These nameservers have no IPv6 address: ns-b.providesupport.com, ns-i.providesupport.com, ns-o.providesupport.com.

  #13

serial 2026032701 · primary ns-1327.awsdns-37.org

Found

Primary (MNAME)

ns-1327.awsdns-37.org

Contact (RNAME)

hostmaster.providesupport.com

Serial

2026032701

Refresh / retry

1200 s / 120 s

Expire

1209600 s

Negative TTL

180 s

Serial per nameserver

Checks

• ✓ Serial 2026032701 everywhere #22

  All nameservers serve the same version of the zone.
• !

  Unusual SOA timers

  negative caching TTL (minimum) 3m is outside 5m–1d (RFC 2308 recommends 1–3 hours). Current values: refresh 20m, retry 2m, expire 14d, negative TTL 3m.

  #23
• ✓ Primary is a public nameserver #24

  The primary nameserver ns-1327.awsdns-37.org is one of the listed nameservers.
• ✓ Contact hostmaster@providesupport.com #25

  The SOA RNAME hostmaster.providesupport.com means hostmaster@providesupport.com.
• ✓ Date-based serial #26

  The serial 2026032701 follows the YYYYMMDDnn convention (2026-03-27).

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

9 records at the apex

Found

Read from

205.251.197.47:53

Checks

• !

  Very low TTLs

  These records have a TTL below 5m, causing extra queries and slower lookups: NS (3m). Low TTLs are useful just before a planned change. The NS TTL at the parent is 2d and in the zone 3m; 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