salsalabs.com

Checked 22 October 2026, 10:34 UTC · via 8.8.8.8
✗Problems found
23 passed 3 warnings 1 failed 4 info

Registration

info

.com generic · eNom, LLC · expires 2027-10-15

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
eNom, LLC
Registered
15 October 2007
Last changed
16 September 2026
Expires
15 October 2027
Status
active
Registry nameservers
ns-1015.awsdns-62.net, ns-1142.awsdns-14.org, ns-319.awsdns-39.com, s-1923.awsdns-48.co.uk
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 2027-10-15 #3
    The registration is valid until 2027-10-15 (358 days).
  • i
    No transfer lock
    The domain has no transfer lock (status: active). A registrar lock protects against unauthorized transfers.
    #4
  • ✓ Registry and delegation match #5
    The nameservers registered at the registry are the ones published in DNS.

Delegation

fail

ns-1015.awsdns-62.net, ns-1142.awsdns-14.org, ns-319.awsdns-39.com, s-1923.awsdns-48.co.uk

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
ns-1015.awsdns-62.net, ns-1142.awsdns-14.org, ns-319.awsdns-39.com, s-1923.awsdns-48.co.uk
NS in the zone
ns-1015.awsdns-62.net, ns-1142.awsdns-14.org, ns-1923.awsdns-48.co.uk, ns-319.awsdns-39.com
NameserverAddressesNetwork (AS)Glue
ns-1015.awsdns-62.net205.251.195.247 2600:9000:5303:f700::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US-
ns-1142.awsdns-14.org205.251.196.118 2600:9000:5304:7600::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US-
ns-1923.awsdns-48.co.uk (zone only)205.251.199.131 2600:9000:5307:8300::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US-
ns-319.awsdns-39.com205.251.193.63 2600:9000:5301:3f00::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US205.251.193.63 2600:9000:5301:3f00::1
s-1923.awsdns-48.co.uk (parent only)(does not resolve)-

Checks

  • ✓ 4 nameservers #6
    Delegated to ns-1015.awsdns-62.net, ns-1142.awsdns-14.org, ns-319.awsdns-39.com, s-1923.awsdns-48.co.uk.
  • !
    NS sets differ
    The nameservers at the parent and in the zone should be the same. Only at the parent: s-1923.awsdns-48.co.uk; only in the zone: ns-1923.awsdns-48.co.uk. ns-1015.awsdns-62.net, ns-1142.awsdns-14.org, ns-1923.awsdns-48.co.uk, ns-319.awsdns-39.com report NS ns-1015.awsdns-62.net ns-1142.awsdns-14.org ns-1923.awsdns-48.co.uk ns-319.awsdns-39.com.
    #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): s-1923.awsdns-48.co.uk.
    #9
  • ✓ Nameservers in different networks #10
    The nameservers are spread over 4 IPv4 /24s and 4 IPv6 /48s.
  • i
    All nameservers in one AS
    All nameserver addresses are announced by one network operator (AS16509 (AMAZON-02 - Amazon.com, Inc., US): 8 addresses). An outage or attack on that network affects all nameservers; large anycast providers mitigate this, but a secondary DNS provider adds independence.
    #11
  • ✓ Nameserver names under 4 TLDs #12
    Nameserver names use the TLDs .com, .net, .org, .uk.
  • ✓ All reachable over IPv6 #13
    Every nameserver has an IPv6 address.

Nameservers

pass

8 of 8 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns-1015.awsdns-62.net 205.251.195.247NOERROR, 4 ms, authoritativenoyes / yesrefused-
ns-1015.awsdns-62.net 2600:9000:5303:f700::1NOERROR, 4 ms, authoritativenoyes / yesrefused-
ns-1142.awsdns-14.org 205.251.196.118NOERROR, 3 ms, authoritativenoyes / yesrefused-
ns-1142.awsdns-14.org 2600:9000:5304:7600::1NOERROR, 4 ms, authoritativenoyes / yesrefused-
ns-1923.awsdns-48.co.uk 205.251.199.131NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns-1923.awsdns-48.co.uk 2600:9000:5307:8300::1NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns-319.awsdns-39.com 205.251.193.63NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns-319.awsdns-39.com 2600:9000:5301:3f00::1NOERROR, 9 ms, authoritativenoyes / yesrefused-

Checks

  • ✓ All respond #14
    All 8 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 1 · primary ns-1015.awsdns-62.net

Found

Primary (MNAME)
ns-1015.awsdns-62.net
Contact (RNAME)
awsdns-hostmaster.amazon.com
Serial
1
Refresh / retry
7200 s / 900 s
Expire
1209600 s
Negative TTL
86400 s

Serial per nameserver

NameserverSerial
ns-1015.awsdns-62.net (205.251.195.247)1
ns-1015.awsdns-62.net (2600:9000:5303:f700::1)1
ns-1142.awsdns-14.org (205.251.196.118)1
ns-1142.awsdns-14.org (2600:9000:5304:7600::1)1
ns-1923.awsdns-48.co.uk (205.251.199.131)1
ns-1923.awsdns-48.co.uk (2600:9000:5307:8300::1)1
ns-319.awsdns-39.com (205.251.193.63)1
ns-319.awsdns-39.com (2600:9000:5301:3f00::1)1

Checks

  • ✓ Serial 1 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 2h, retry 15m, expire 14d, negative TTL 1d.
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns-1015.awsdns-62.net is one of the listed nameservers.
  • ✓ Contact awsdns-hostmaster@amazon.com #25
    The SOA RNAME awsdns-hostmaster.amazon.com means awsdns-hostmaster@amazon.com.
  • ✓ Counter serial #26
    The serial 1 is a plain counter.

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

23 records at the apex

Found

Read from
205.251.195.247:53
TypeValueTTL
SOAns-1015.awsdns-62.net. awsdns-hostmaster.amazon.com. 1 7200 900 1209600 86400900
NSns-1015.awsdns-62.net.120
NSns-1142.awsdns-14.org.120
NSns-1923.awsdns-48.co.uk.120
NSns-319.awsdns-39.com.120
A13.248.160.13760
A76.223.34.12460
MX1 salsalabs-com.mail.protection.outlook.com.3600
TXT"MS=4E09F61245C91AE96B399078AA11B179BCEC09A0"3600
TXT"MS=ms65333448"3600
TXT"apple-domain-verification=zVaGVAPz69CNXBE9"3600
TXT"atlassian-domain-verification=WNWdAgwTPUoEaAU6lJr1Xz30eeaXYXGGABs3H6fX5Pu8EX7fLZd2mxJEz0dTdHNm"3600
TXT"citrix-verification-code=0cdd46a1-adf3-41c6-9dd0-55c9c786a2ee"3600
TXT"docusign=57b100c1-6c9d-4d44-b5c5-00a7efb3a396"3600
TXT"google-gws-recovery-domain-verification=47493016"3600
TXT"google-site-verification=CrKk6-xVZy-VMSAitoAE_9-dEydkgHYWGFBLKoIHc8c"3600
TXT"google-site-verification=FLOdkGnDHJp92aoyzQkh8oByFy7KT3YQD_VxqaQcDqk"3600
TXT"google-site-verification=RmWJWjE6iOOMWtmcF5zMm2p0VbB1MJe3HRofE8DIkFo"3600
TXT"google-site-verification=Xec0SXytHnp9We7JLLWNexOihlAYbvE73yJ5SZztE84"3600
TXT"google-site-verification=qe6xb4IDBCzedB-qdrKlmIKI70bjvdeZVMoRggKw8dQ"3600
TXT"knowbe4-site-verification=1eafab8f84513c66476970e044203802"3600
TXT"twilio-domain-verification=98112987ac8e1405cb9e94717984034c"3600
TXT"v=spf1 mx ip4:8.15.20.0/23 ip4:69.174.82.0/23 ip4:204.28.10.0/23 ip4:50.238.7.142/30 ip4:66.37.59.130/30 include:mail.zendesk.com include:aspmx.pardot.com include:salsalabs.org include:spf.protection.outlook.com ~all"3600

Checks

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