mckesson.com

Checked 22 October 2026, 09:44 UTC · via 8.8.8.8
!Passed with warnings
25 passed 2 warnings 0 failed 4 info

Registration

info

.com generic · CSC Corporate Domains, Inc. · expires 2027-11-08

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
CSC Corporate Domains, Inc.
Registered
9 November 1994
Last changed
1 October 2026
Expires
8 November 2027
Status
client transfer prohibited, server delete prohibited, server transfer prohibited, server update prohibited
Registry nameservers
ep1ns01.mckesson.com, ep1ns02.mckesson.net, ep1ns03.mckesson.org, ep1ns04.mckesson.com, ep2ns01.mckesson.com, ep2ns02.mckesson.net, ep2ns03.mckesson.org
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 2027-11-08 #3
    The registration is valid until 2027-11-08 (381 days).
  • ✓ Transfer locked #4
    Registry status: client transfer prohibited, server delete prohibited, server transfer prohibited, server update prohibited.
  • ✓ Registry and delegation match #5
    The nameservers registered at the registry are the ones published in DNS.

Delegation

info

ep1ns01.mckesson.com, ep1ns02.mckesson.net, ep1ns03.mckesson.org, ep1ns04.mckesson.com, ep2ns01.mckesson.com, ep2ns02.mckesson.net, ep2ns03.mckesson.org

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
ep1ns01.mckesson.com, ep1ns02.mckesson.net, ep1ns03.mckesson.org, ep1ns04.mckesson.com, ep2ns01.mckesson.com, ep2ns02.mckesson.net, ep2ns03.mckesson.org
NS in the zone
ep1ns01.mckesson.com, ep1ns02.mckesson.net, ep1ns03.mckesson.org, ep1ns04.mckesson.com, ep2ns01.mckesson.com, ep2ns02.mckesson.net, ep2ns03.mckesson.org
NameserverAddressesNetwork (AS)Glue
ep1ns01.mckesson.com198.51.44.5AS62597 NSONE - NSONE Inc, US198.51.44.5
ep1ns02.mckesson.net198.51.45.5AS62597 NSONE - NSONE Inc, US-
ep1ns03.mckesson.org198.51.44.69AS62597 NSONE - NSONE Inc, US-
ep1ns04.mckesson.com198.51.45.69AS62597 NSONE - NSONE Inc, US198.51.45.69
ep2ns01.mckesson.com208.94.148.13 2600:1800:5::1AS16552 DIGICERT - Tiggee LLC, US AS16552 DIGICERT - Tiggee LLC, US208.94.148.13 2600:1800:5::1
ep2ns02.mckesson.net208.80.124.13 2600:1801:6::1AS16552 DIGICERT - Tiggee LLC, US AS16552 DIGICERT - Tiggee LLC, US-
ep2ns03.mckesson.org208.80.126.13 2600:1802:7::1AS16552 DIGICERT - Tiggee LLC, US AS16552 DIGICERT - Tiggee LLC, US-

Checks

  • ✓ 7 nameservers #6
    Delegated to ep1ns01.mckesson.com, ep1ns02.mckesson.net, ep1ns03.mckesson.org, ep1ns04.mckesson.com, ep2ns01.mckesson.com, ep2ns02.mckesson.net, ep2ns03.mckesson.org.
  • ✓ Parent and zone agree #7
    The parent delegation and the zone's NS records list the same nameservers.
  • ✓ Glue present and correct #8
    Glue is published for the nameservers inside the zone: ep1ns01.mckesson.com, ep1ns04.mckesson.com, ep2ns01.mckesson.com.
  • ✓ 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 5 IPv4 /24s and 3 IPv6 /48s.
  • ✓ 2 autonomous systems #11
    The nameservers are spread over: AS16552 (DIGICERT - Tiggee LLC, US): 6 addresses; AS62597 (NSONE - NSONE Inc, US): 4 addresses.
  • ✓ Nameserver names under 3 TLDs #12
    Nameserver names use the TLDs .com, .net, .org.
  • i
    Partly IPv6
    These nameservers have no IPv6 address: ep1ns01.mckesson.com, ep1ns02.mckesson.net, ep1ns03.mckesson.org, ep1ns04.mckesson.com.
    #13

Nameservers

info

10 of 10 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ep1ns01.mckesson.com 198.51.44.5NOERROR, 4 ms, authoritativenoyes / yesrefused19dd46e347df36b70933bf2be8023258586586a9
ep1ns02.mckesson.net 198.51.45.5NOERROR, 4 ms, authoritativenoyes / yesrefused19dd46e347df36b70933bf2be8023258586586a9
ep1ns03.mckesson.org 198.51.44.69NOERROR, 4 ms, authoritativenoyes / yesrefused19dd46e347df36b70933bf2be8023258586586a9
ep1ns04.mckesson.com 198.51.45.69NOERROR, 4 ms, authoritativenoyes / yesrefused19dd46e347df36b70933bf2be8023258586586a9
ep2ns01.mckesson.com 208.94.148.13NOERROR, 3 ms, authoritativenoyes / yesrefusedDNS Made Easy Anycast
ep2ns01.mckesson.com 2600:1800:5::1NOERROR, 4 ms, authoritativenoyes / yesrefusedDNS Made Easy Anycast
ep2ns02.mckesson.net 208.80.124.13NOERROR, 4 ms, authoritativenoyes / yesrefusedDNS Made Easy Anycast
ep2ns02.mckesson.net 2600:1801:6::1NOERROR, 4 ms, authoritativenoyes / yesrefusedDNS Made Easy Anycast
ep2ns03.mckesson.org 208.80.126.13NOERROR, 3 ms, authoritativenoyes / yesrefusedDNS Made Easy Anycast
ep2ns03.mckesson.org 2600:1802:7::1NOERROR, 4 ms, authoritativenoyes / yesrefusedDNS Made Easy Anycast

Checks

  • ✓ All respond #14
    All 10 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.
  • i
    Identifying string disclosed
    These nameservers answer version queries with a string that is not a version number: ep1ns01.mckesson.com: "19dd46e347df36b70933bf2be8023258586586a9"; ep1ns02.mckesson.net: "19dd46e347df36b70933bf2be8023258586586a9"; ep1ns03.mckesson.org: "19dd46e347df36b70933bf2be8023258586586a9"; ep1ns04.mckesson.com: "19dd46e347df36b70933bf2be8023258586586a9"; ep2ns01.mckesson.com: "DNS Made Easy Anycast"; ep2ns02.mckesson.net: "DNS Made Easy Anycast"; ep2ns03.mckesson.org: "DNS Made Easy Anycast".
    #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

warn

serial 11260 · primary ndh1-nmgt-ins2.mckesson.com

Found

Primary (MNAME)
ndh1-nmgt-ins2.mckesson.com
Contact (RNAME)
noreply.mckesson.com
Serial
11260
Refresh / retry
1800 s / 3600 s
Expire
2592000 s
Negative TTL
900 s

Serial per nameserver

NameserverSerial
ep1ns01.mckesson.com (198.51.44.5)11260
ep1ns02.mckesson.net (198.51.45.5)11260
ep1ns03.mckesson.org (198.51.44.69)11260
ep1ns04.mckesson.com (198.51.45.69)11260
ep2ns01.mckesson.com (208.94.148.13)11260
ep2ns01.mckesson.com (2600:1800:5::1)11260
ep2ns02.mckesson.net (208.80.124.13)11260
ep2ns02.mckesson.net (2600:1801:6::1)11260
ep2ns03.mckesson.org (208.80.126.13)11260
ep2ns03.mckesson.org (2600:1802:7::1)11260

Checks

  • ✓ Serial 11260 everywhere #22
    All nameservers serve the same version of the zone.
  • !
    Unusual SOA timers
    retry 1h should be shorter than refresh 30m. Current values: refresh 30m, retry 1h, expire 30d, negative TTL 15m.
    #23
  • i
    Hidden master
    The primary nameserver ndh1-nmgt-ins2.mckesson.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 noreply@mckesson.com #25
    The SOA RNAME noreply.mckesson.com means noreply@mckesson.com.
  • ✓ Counter serial #26
    The serial 11260 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

pass

75 records at the apex

Found

Read from
198.51.44.5:53
TypeValueTTL
SOAndh1-nmgt-ins2.mckesson.com. noreply.mckesson.com. 11260 1800 3600 2592000 90010800
NSep2ns03.mckesson.org.10800
NSep2ns02.mckesson.net.10800
NSep2ns01.mckesson.com.10800
NSep1ns04.mckesson.com.10800
NSep1ns03.mckesson.org.10800
NSep1ns02.mckesson.net.10800
NSep1ns01.mckesson.com.10800
A45.60.171.26300
A45.60.151.26300
MX10 mx0b-0016dd01.pphosted.com.1800
MX10 mx0a-0016dd01.pphosted.com.1800
TXT"6HW7VbdC46TvxVWoSe8CnRarsoe0IibIHVDYTKDU+DsgOFSs4+umn4U01hLn/Pv3VVuZJ8Aj7ceI+s9y8k6dpw=="3600
TXT"atlassian-domain-verification=gsDuvpVuuRKIaIKumVqSuZQSQRKqU3N1C1k1fzdGarBkVd2VGgHI8jzltiZ6hQJ5"3600
TXT"google-site-verification=0uAVGaP0T4zaAKC1RnZWuA0XF5cLfnHVcEMmHSit8Kw"3600
TXT"ciscocidomainverification=68215d26e8053d31a1fbd9f1d25a25684a4562873b43c57453678a63b274a9c5"3600
TXT"AJIj3IyYGuA39n0ASGhvJU6JomRwVXJxgp/MjK0iPix0EjidtRhaVC1EZ1X9awXcDetmM6sLzye7OuoolIqMdw=="3600
TXT"docusign=f98e2957-5daa-440f-a522-187ee7b26774"3600
TXT"google-site-verification=dVh-bwFVWejx17HEYQc7Ff9EBUYz4HpsAmX5G45sFzM"3600
TXT"onetrust-domain-verification=f915b4562bf044bd9336ceee2559d597"3600
TXT"onetrust-domain-verification=20e3bc9e9f6e4c3589d4e6f1aabfa049"3600
TXT"Dynatrace-site-verification=da530ba1-8c85-4a5d-bd59-7c0b5d0759fd__fk0m69autih7be45qtqgkubr6i"3600
TXT"google-site-verification=WdQTxQ6QBrJR2XLMwGsjc2D4INRQBoUdN4h1-DKBDuY"3600
TXT"qzhzp53gb3ptqd646m546xr8zqjplv3v"3600
TXT"apple-domain-verification=xw8Nd6kWVZsH2Mz4"3600
TXT"adobe-idp-site-verification=f9b8b7c82fa3791b4bc6c71e0544f373157e52bc54009954c0a1b8281cadc25e"3600
TXT"google-site-verification=5FaUtcPVuazwyvShOAb0Z3wn0K2WBph0-uBql-Kh-ao"3600
TXT"miro-verification=88fbc5bc244b32dbb566b32a427f088e92b3008e"3600
TXT"pendo-domain-verification=fd2b7d0c-3500-4da0-8d1f-606bf1f05640"3600
TXT"mongodb-site-verification=Or8i9c3sInlimltZHnIPxeWNEgqG4SwH"3600
TXT"docker-verification=78b5c64d-c8ec-4cf8-916d-5576ee0faabd"3600
TXT"twilio-domain-verification=74f332ffb8602dd9683b7ef4de2be500"3600
TXT"nintex.5ea04b3fd574e20c59dea539"3600
TXT"cisco-ci-domain-verification=665a73194c299312bded120c161049b2f47ed34652a17d23d27d11c43aa9f7ce"3600
TXT"asv=439e2cba8a9fd332ae77e8de374e060a"3600
TXT"asv=a9d056b489aa53641772d188ce2d0ea7"3600
TXT"cisco-ci-domain-verification=5152fc70273fee7d968cb7f4e8396bcea724fff97cec1b4f538c34a554dae9e7"3600
TXT"cisco-ci-domain-verification=58302a6dcaafff34a3049815bba79ccee99665571f25d798475cfad3405a3815"3600
TXT"cisco-ci-domain-verification=4047c8f4abcaa331960c9f99522b0f4ac0b9e4f886c52511b66077b0eed90816"3600
TXT"cisco-ci-domain-verification=58bbfbf82dca3cf43c4c6b3b626ce29cabd5be24a74ed68f3f11955844053220"3600
TXT"launchdarkly-domain-verification=75ab1d3d-79f5-4b37-b206-cc9bb2058cb4"3600
TXT"h1-domain-verification=oQuAKih8KSNNzM8Stf59Nh7sJmK5cKmWJyd5CQ8W549X7fs9"3600
TXT"cisco-ci-domain-verification=7dc4bfb7c629b4c8830cdaef4593ce638e9c87200d61eff92e4208b96c500e16"3600
TXT"zscaler-verification=zscaler-verification-7234647-5072025-Pk25zZ"3600
TXT"WinB7gpG31Ap_C37pIwWZFLLfCNLojG2aGO8MjlL1t4"3600
TXT"jamf-site-verification=3zm7A9R8hXaFsaL9-qHgwA"3600
TXT"airtable-verification=04ea8df8518c501d977e4ec8823675aa"3600
TXT"IeMmEcdiP2BRSasA_34j89NPq_Q"3600
TXT"mongodb-site-verification=fpqljkwnCK5OTzc6deXKQHLIT6EQ4cvO"3600
TXT"bettercomp-verify=16011dfcdb9e7e6e129525f5a74c83758a3fbf42a47e7853114d87e800243681"3600
TXT"bettercomp-verify=5eb7ca5c615210274699feef8276f76eb3d6a14733d0dd3184c8f39082f1ca47"3600
TXT"cisco-ci-domain-verification=33826b13d8c396538025e2fa0c7341478555c5f114385334d015f03fd66ff480"3600
TXT"identrust_validate=WfVIBJOCHZKrEyy5/Tkt4178Mn6uH/VzG1dpnUZ+PICg"3600
TXT"anthropic-domain-verification-cqfhh3=t3jqPw1WWFUewhTYm4uBAZLcr"3600
TXT"postman-domain-verification=07cb4d07cece653f32dbe59d021baae28f5ed55e6406282bec193b16ce7bce6db71a0db6903c90dbca8cb6dd8cdf207c5d2bed1f0c0d6e3d5dbe4a756ac616a4"3600
TXT"confluent-verification=541d1a45-5c2a-429e-a338-ef9615ca1ad1"3600
TXT"dtm-domain-verification=VRH4QrbDxMHx_4XZUhOvXE6PZoNsmpGFyH29XYPiQlE"3600
TXT"v=spf1 include:_spf.salesforce.com include:servers.mcsv.net include:_spf1.mckesson.com include:_spf2.mckesson.com include:spf.bananatag.com -all"3600
TXT"cisco-ci-domain-verification=11639d183f9931f8613d0654b76fdda53997b8159e221281d91da36a0828f2aa"3600
TXT"cisco-ci-domain-verification=4e309c77f94583d3a2ee7bf19aac482e4cad58d57b6a56ca4dcd64b2f70736f0"3600
TXT"cisco-ci-domain-verification=396f165b1d431836f6292b5380f17d00a6440cdb5240ba0f1b9846795326ea53"3600
TXT"salesforce-domain-verification=00DHs000003UJ1b=1TBVn00000008Qb"3600
TXT"salesforce-domain-verification=00Dj0000001rs61=1TBKI000000Kyp4"3600
TXT"salesforce-domain-verification=00DWA000005d8Vt=1TBWA0000004lBd"3600
TXT"salesforce-domain-verification=00D500000007dLz=1TBKi0000010wBf"3600
TXT"identrust_validate=U47odMbBtQimYDVksvbZlqog+l5gitOaUasGYz3UZBG0"3600
TXT"cisco-ci-domain-verification=c44783fe2b02864df80cef4333033d43581a317ecd452ebef5b924386bb5ad7"3600
CAA0 issue "digicert.com"10800
CAA0 issue "globalsign.com"10800
CAA0 issue "letsencrypt.org"10800
CAA0 issuemail "digicert.com"10800
CAA0 issue "pki.goog"10800
CAA0 issue "amazon.com"10800
CAA0 issue "identrust.com"10800
CAA0 issuemail "identrust.com"10800

Checks

  • ✓ TTLs within range #32
    TTLs: A 5m, MX 30m, NS 3h. The NS TTL at the parent is 2d and in the zone 3h; 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.
  • ✓ CAA restricts issuance #35
    Certificates may be issued by: digicert.com, globalsign.com, letsencrypt.org, pki.goog, amazon.com, identrust.com.