pdffiller.com

Checked 22 October 2026, 10:12 UTC · via 8.8.8.8
!Passed with warnings
25 passed 2 warnings 0 failed 4 info

Registration

info

.com generic · GoDaddy.com, LLC · expires 2027-02-02

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
GoDaddy.com, LLC
Registered
2 February 2007
Last changed
3 February 2026
Expires
2 February 2027
Status
client delete prohibited, client renew prohibited, client transfer prohibited, client update prohibited
Registry nameservers
ns-1479.awsdns-56.org, ns-1872.awsdns-42.co.uk, ns-663.awsdns-18.net, ns-93.awsdns-11.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 2027-02-02 #3
    The registration is valid until 2027-02-02 (103 days).
  • ✓ Transfer locked #4
    Registry status: client delete prohibited, client renew prohibited, client transfer prohibited, client update prohibited.
  • ✓ Registry and delegation match #5
    The nameservers registered at the registry are the ones published in DNS.

Delegation

info

ns-1479.awsdns-56.org, ns-1872.awsdns-42.co.uk, ns-663.awsdns-18.net, ns-93.awsdns-11.com

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
ns-1479.awsdns-56.org, ns-1872.awsdns-42.co.uk, ns-663.awsdns-18.net, ns-93.awsdns-11.com
NS in the zone
ns-1479.awsdns-56.org, ns-1872.awsdns-42.co.uk, ns-663.awsdns-18.net, ns-93.awsdns-11.com
NameserverAddressesNetwork (AS)Glue
ns-1479.awsdns-56.org205.251.197.199 2600:9000:5305:c700::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US-
ns-1872.awsdns-42.co.uk205.251.199.80 2600:9000:5307:5000::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US-
ns-663.awsdns-18.net205.251.194.151 2600:9000:5302:9700::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US-
ns-93.awsdns-11.com205.251.192.93 2600:9000:5300:5d00::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US205.251.192.93 2600:9000:5300:5d00::1

Checks

  • ✓ 4 nameservers #6
    Delegated to ns-1479.awsdns-56.org, ns-1872.awsdns-42.co.uk, ns-663.awsdns-18.net, ns-93.awsdns-11.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 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-1479.awsdns-56.org 205.251.197.199NOERROR, 3 ms, authoritativenoyes / yesrefused-
ns-1479.awsdns-56.org 2600:9000:5305:c700::1NOERROR, 4 ms, authoritativenoyes / yesrefused-
ns-1872.awsdns-42.co.uk 205.251.199.80NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns-1872.awsdns-42.co.uk 2600:9000:5307:5000::1NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns-663.awsdns-18.net 205.251.194.151NOERROR, 4 ms, authoritativenoyes / yesrefused-
ns-663.awsdns-18.net 2600:9000:5302:9700::1NOERROR, 4 ms, authoritativenoyes / yesrefused-
ns-93.awsdns-11.com 205.251.192.93NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns-93.awsdns-11.com 2600:9000:5300:5d00::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-93.awsdns-11.com

Found

Primary (MNAME)
ns-93.awsdns-11.com
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-1479.awsdns-56.org (205.251.197.199)1
ns-1479.awsdns-56.org (2600:9000:5305:c700::1)1
ns-1872.awsdns-42.co.uk (205.251.199.80)1
ns-1872.awsdns-42.co.uk (2600:9000:5307:5000::1)1
ns-663.awsdns-18.net (205.251.194.151)1
ns-663.awsdns-18.net (2600:9000:5302:9700::1)1
ns-93.awsdns-11.com (205.251.192.93)1
ns-93.awsdns-11.com (2600:9000:5300:5d00::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-93.awsdns-11.com 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

29 records at the apex

Found

Read from
205.251.197.199:53
TypeValueTTL
SOAns-93.awsdns-11.com. awsdns-hostmaster.amazon.com. 1 7200 900 1209600 86400900
NSns-1479.awsdns-56.org.172800
NSns-1872.awsdns-42.co.uk.172800
NSns-663.awsdns-18.net.172800
NSns-93.awsdns-11.com.172800
A100.61.249.19060
A34.193.241.4160
A100.57.176.10960
MX10 aspmx.l.google.com.60
MX20 alt1.aspmx.l.google.com.60
MX30 alt2.aspmx.l.google.com.60
MX40 aspmx2.googlemail.com.60
MX50 aspmx3.googlemail.com.60
TXT"00D1I000001eLDU=1TBJx000000068k"60
TXT"1password-site-verification=GYECW7KBB5BZTEI2CA3NRAMPAI"60
TXT"CKO=cli_mwjkka6fdbcunjzolxsoaffm7y"60
TXT"_qrbfez8pqa3xx4n2oqsh1i1lg1ia3vn"60
TXT"atlassian-domain-verification=NpGISQxpKG9YLJq1UAwGWTJrXiep7vpCgtH8zeQjl0itOd4M5hBSH8N0htPELpiC"60
TXT"cursor-domain-verification-rbbfvz=hjSBAwMAr1T19Kvv7guOYmZ4c"60
TXT"detectify-verification=ae33e5c523ebec0876a9e489b9a4f750"60
TXT"detectify-verification=d33ab4b26d1b7f5a46401b803387db41"60
TXT"detectify-verification=fe41bb7b48c9648e6d6b58e8c7348368"60
TXT"google-site-verification=6WT857pY-fTpXRFszmmnRSSNVmEaCOYiLPMpuBndEOI"60
TXT"google-site-verification=SSR4pEv3LdWS8_pSPfjEfL1pddUqvxthmC3Kl0n4yj8"60
TXT"google-site-verification=qZZmg79QfFVgrtiA21DNPuUvw8ZXF16VzlnFqurSsKc"60
TXT"miro-verification=a55a2157c924a21570e702ea2a71ea5c117badf7"60
TXT"status-page-domain-verification=w11cyc6955fw"60
TXT"v=spf1 include:smtp4.pdffiller.com include:_spf.aireml.com include:_spf.google.com -all"60
TXT"yahoo-verification-key=obojUvRjIJNYMQTCaZfPDkuy564gcsI5os5rBMmo1P0="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.
    #32
  • ✓ No CNAME at the apex #33
    The zone apex has no CNAME record.
  • i
    Wildcard record
    A random name under the zone resolves, so there is a wildcard (*) record. Typos and non-existent hosts resolve too, which can confuse mail and certificate checks.
    #34
  • 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