prometric.com

Checked 22 October 2026, 10:21 UTC · via 8.8.8.8
!Passed with warnings
28 passed 1 warning 0 failed 6 info

Registration

info

.com generic · Amazon Registrar, Inc. · expires 2026-11-30

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
Amazon Registrar, Inc.
Registered
1 December 1994
Last changed
14 May 2026
Expires
30 November 2026
Status
client transfer prohibited
Registry nameservers
a1-73.akam.net, a11-66.akam.net, a12-64.akam.net, a14-66.akam.net, a20-64.akam.net, a5-67.akam.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 2026-11-30 #3
    The registration is valid until 2026-11-30 (38 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

info

a1-73.akam.net, a11-66.akam.net, a12-64.akam.net, a14-66.akam.net, a20-64.akam.net, a5-67.akam.net

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
a1-73.akam.net, a11-66.akam.net, a12-64.akam.net, a14-66.akam.net, a20-64.akam.net, a5-67.akam.net
NS in the zone
a1-73.akam.net, a11-66.akam.net, a12-64.akam.net, a14-66.akam.net, a20-64.akam.net, a5-67.akam.net
NameserverAddressesNetwork (AS)Glue
a1-73.akam.net193.108.91.73 2600:1401:2::49AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
a11-66.akam.net84.53.139.66 2600:1480:1::42AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
a12-64.akam.net184.26.160.64 2600:1480:f000::40AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
a14-66.akam.net184.26.161.66 2600:1480:1800::42AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
a20-64.akam.net95.100.175.64 2a02:26f0:67::40AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
a5-67.akam.net95.100.168.67 2600:1480:b000::43AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-

Checks

  • ✓ 6 nameservers #6
    Delegated to a1-73.akam.net, a11-66.akam.net, a12-64.akam.net, a14-66.akam.net, a20-64.akam.net, a5-67.akam.net.
  • ✓ 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 6 IPv4 /24s and 6 IPv6 /48s.
  • i
    All nameservers in one AS
    All nameserver addresses are announced by one network operator (AS21342 (AKAMAI-ASN2 - Akamai International B.V., NL): 12 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.

Nameservers

warn

12 of 12 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
a1-73.akam.net 193.108.91.73NOERROR, 4 ms, authoritativenoyes / yesrefused41824.9
a1-73.akam.net 2600:1401:2::49NOERROR, 4 ms, authoritativenoyes / yesrefused41824.10
a11-66.akam.net 84.53.139.66NOERROR, 4 ms, authoritativenoyes / yesrefused41824.7
a11-66.akam.net 2600:1480:1::42NOERROR, 4 ms, authoritativenoyes / yesrefused41824.10
a12-64.akam.net 184.26.160.64NOERROR, 4 ms, authoritativenoyes / yesrefused48878.29
a12-64.akam.net 2600:1480:f000::40NOERROR, 4 ms, authoritativenoyes / yesrefused48878.26
a14-66.akam.net 184.26.161.66NOERROR, 4 ms, authoritativenoyes / yesrefused48878.29
a14-66.akam.net 2600:1480:1800::42NOERROR, 4 ms, authoritativenoyes / yesrefused48878.33
a20-64.akam.net 95.100.175.64NOERROR, 3 ms, authoritativenoyes / yesrefused48878.27
a20-64.akam.net 2a02:26f0:67::40NOERROR, 3 ms, authoritativenoyes / yesrefused48878.30
a5-67.akam.net 95.100.168.67NOERROR, 5 ms, authoritativenoyes / yesrefused41824.11
a5-67.akam.net 2600:1480:b000::43NOERROR, 4 ms, authoritativenoyes / yesrefused41824.4

Checks

  • ✓ All respond #14
    All 12 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.
  • !
    Software version disclosed
    These nameservers report their software version via version.bind/version.server, which helps attackers find known vulnerabilities: a1-73.akam.net: "41824.9"; a1-73.akam.net: "41824.10"; a11-66.akam.net: "41824.7"; a11-66.akam.net: "41824.10"; a12-64.akam.net: "48878.29"; a12-64.akam.net: "48878.26"; a14-66.akam.net: "48878.29"; a14-66.akam.net: "48878.33"; a20-64.akam.net: "48878.27"; a20-64.akam.net: "48878.30"; a5-67.akam.net: "41824.11"; a5-67.akam.net: "41824.4". Hide or replace the version string.
    #17
  • ✓ 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 2021091485 · primary a1-73.akam.net

Found

Primary (MNAME)
a1-73.akam.net
Contact (RNAME)
hostmaster.prometric.com
Serial
2021091485
Refresh / retry
3600 s / 600 s
Expire
604800 s
Negative TTL
300 s

Serial per nameserver

NameserverSerial
a1-73.akam.net (193.108.91.73)2021091485
a1-73.akam.net (2600:1401:2::49)2021091485
a11-66.akam.net (84.53.139.66)2021091485
a11-66.akam.net (2600:1480:1::42)2021091485
a12-64.akam.net (184.26.160.64)2021091485
a12-64.akam.net (2600:1480:f000::40)2021091485
a14-66.akam.net (184.26.161.66)2021091485
a14-66.akam.net (2600:1480:1800::42)2021091485
a20-64.akam.net (95.100.175.64)2021091485
a20-64.akam.net (2a02:26f0:67::40)2021091485
a5-67.akam.net (95.100.168.67)2021091485
a5-67.akam.net (2600:1480:b000::43)2021091485

Checks

  • ✓ Serial 2021091485 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 1h, retry 10m, expire 7d, negative TTL 5m.
  • ✓ Primary is a public nameserver #24
    The primary nameserver a1-73.akam.net is one of the listed nameservers.
  • ✓ Contact hostmaster@prometric.com #25
    The SOA RNAME hostmaster.prometric.com means hostmaster@prometric.com.
  • ✓ Date-based serial #26
    The serial 2021091485 follows the YYYYMMDDnn convention (2021-09-14).

DNSSEC

info

Signed, DS published at parent

Found

Validated by resolver
yes
Denial of existence
NSEC3
NSEC3
0 iterations, 0-byte salt
Signatures valid until
24 October 2026

DS at the parent

Key tagAlgorithmDigestMatches a key
32991ECDSAP256SHA256 (13)SHA256 C460EB51EA8037A9…yes
59030ECDSAP256SHA256 (13)SHA256 D2C96CBE1AC0CF90…NO
11795ECDSAP256SHA256 (13)SHA256 23EF0D2589B29CD7…NO

DNSKEY in the zone

Key tagRoleAlgorithm
32991KSK (257)ECDSAP256SHA256 (13)
10430ZSK (256)ECDSAP256SHA256 (13)
14439ZSK (256)ECDSAP256SHA256 (13)

Checks

  • ✓ Signed and validated #27
    The zone is signed, the parent publishes a DS record, and the resolver validates the answers.
  • i
    Unused DS records
    These DS records match no key in the zone: key tag 59030 (SHA256), key tag 11795 (SHA256). That is normal during a key rollover; otherwise remove them.
    #28
  • ✓ Modern algorithms #29
    Key algorithms: ECDSAP256SHA256 (13).
  • ✓ Short-lived signatures (online signing) #30
    Signatures are valid for 73h0m0s and created on demand; the current one was made at 2026-10-21 17:02 UTC and expires at 2026-10-24 18:02 UTC.
  • ✓ NSEC3 as recommended #31
    The zone uses NSEC3 with 0 iterations and no salt (RFC 9276).

Records

info

41 records at the apex

Found

Read from
193.108.91.73:53
TypeValueTTL
SOAa1-73.akam.net. hostmaster.prometric.com. 2021091485 3600 600 604800 30086400
NSa5-67.akam.net.86400
NSa20-64.akam.net.86400
NSa11-66.akam.net.86400
NSa12-64.akam.net.86400
NSa1-73.akam.net.86400
NSa14-66.akam.net.86400
A142.93.57.66300
MX0 prometric-com.mail.protection.outlook.com.300
TXT"stripe-verification=0f6fca3190d49f34366ba5ecfac03fdcf3630a6ff3589d9c100a6fc1baefeb63"360
TXT"mvpsnzzgv3b08llc63tbgmcnjhblxt37"360
TXT"onx=eed32905-1107-4724-b447-408be0082f4a"360
TXT"amazonses:Lo8AUL9mSfX+DwJdYJagQ1zSa226cFPrbh1YOfgL6qA="360
TXT"stripe-verification=ec612220664020fb173111e81167fe10b0257595cec050e25f0efe2bbab5ade5"360
TXT"stripe-verification=b48b2a0e16853d1eda273dd09b934ef18277ed58e4577d484acbb6be1a7258a6"360
TXT"stripe-verification=330df262ccba89c7d067fcd5c0be73655b0a75bb8ce899af06afb816e4450bd0"360
TXT"v=spf1 ip4:208.76.122.9 ip4:208.76.123.9 ip4:104.130.47.71 ip4:149.72.131.17 ip4:149.72.155.253 include:spf1.prometric.com include:spf.protection.outlook.com include:_spf.salesforce.com include:spf.mailjet.com include:_spf.advansys.com -all"360
TXT"00da0000000z1wama0"360
TXT"stripe-verification=948b44a1793c16ec7b6d9feff4c126faadd1e84b8465ff016355c8b0e6891299"360
TXT"google-site-verification=001Pgiovbzo3n0sYbdR1dnEDw6o_d2md_jypumJjiL8"360
TXT"zoho-verification=zb70631006.zmverify.zoho.com"360
TXT"pardot963243=3f581bc3c3cf88eec8253312312904c9f28c558ff5223feca6ccb0b62057efa7"360
TXT"BtI456MEr456"360
TXT"h1-domain-verification=Z18zHM6h6LUWtsjtPWjKuv3LkxkFdNHyHk5BU83hE3SEwhmR"360
TXT"1B1246560BMJ"360
TXT"teamviewer-sso-verification=b22778f8ace94ccd8c941998fa32e90e"360
TXT"apple-domain-verification=Igpd7WlDRKMEMaST"360
TXT"gaqte986"360
TXT"zfg1w9tnwh20n1v2lmcr2f71ccgvwt58"360
TXT"stripe-verification=8ff3b14307a8a0715af0b28bf50313b369d607ca324f28907a4db21c87f88d77"360
TXT"google-site-verification=qXtbwJmF841nFslaf_bbtCfrkv2fNeQdvkreYSXkkyQ"360
TXT"logmein-verification-code=c55f5376-afb8-4d30-b0fd-675826bcce12"360
TXT"anthropic-domain-verification-294ypp=JXeaf3eOA6F1szIac2A54lUYL"360
TXT"stripe-verification=0cba383ebbaa0d512215a4b0cc4c851281497db8b46f713bdf93c3c165db3a77"360
TXT"mandrill_verify.bX5SG9m5pM5I_3epD8ly2A"360
TXT"MS=ms15648445"360
TXT"google-site-verification=SbsUAx4Csl4XG4YOTA0YUwdBgMt813TYf_61fGGHj44"360
TXT"twilio-domain-verification=219b0e0a111a8feacc9f0da387c16af3"360
TXT"stripe-verification=75cc6ed969817c670f5d6d4c41fc47d76e896787108fdb4ad642559097b5a028"360
TXT"stripe-verification=254ae24863459ebc78a94c3d6663e26f1e1eefdf7581aaabb8f3e99eacf344d2"360
TXT"stripe-verification=11f9dd432d19d06f6671635760c2938f4ce19cd5cb92dee5e5620a30ffafd4ff"360

Checks

  • ✓ TTLs within range #32
    TTLs: A 5m, MX 5m, NS 1d. The NS TTL at the parent is 2d and in the zone 1d; resolvers may use either.
  • ✓ 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