IPv4 Addresses

TTL

Name Servers

TTL

Mail Servers

TTL

SOA Details

TTL
SOA Primary NS
10m
SOA Responsible
hostmaster.mcgraw-hill.com
SOA Serial
4386
SOA Times
Refresh 4h
Retry 2h
Expire 30d
Minimum TTL 5m

Certificate Authority Authorization

TTL

No CAA records were returned at this registrable domain name. With no CAA policy, any public certificate authority (CA) may issue TLS certificates for names under this zone unless a parent publishes CAA; add issue / issuewild / iodef records to restrict issuance.

DMARC

TTL
DMARC Policy

Organizational policy (p): how receivers treat mail that fails aligned DMARC checks — none (monitor only), quarantine (often junk), or reject (block).

none quarantine reject
10m
DMARC Subdomain Policy

Subdomain policy (sp): when set, it applies to hostnames below this domain instead of p; if omitted, subdomains inherit the organizational policy.

none quarantine reject
DMARC Percentage

pct: share of mail that gets quarantine/reject; 100 = all failing messages (default).

100
DMARC RUA

Aggregate DMARC reports (ZIP/XML). Optional but recommended for visibility.

DMARC RUF

Forensic (per-failure) reports. Often omitted for privacy or volume.

DKIM

TTL
DKIM Selector smtp
v=DKIM1 k=rsa
10m
Public Key
MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCs1+v+ZYd9gEU3bzA5...

SPF (Sender Policy Framework)

TTL
SPF SPFv1
Qualifier Mechanism Target / value Valid Details
+ Pass ip4
+ Pass ip4
+ Pass ip4
+ Pass ip4
+ Pass ip4
+ Pass ip4
+ Pass ip4
+ Pass ip4
+ Pass include
+ Pass include
+ Pass include
- Fail all
1m

MTA-STS

TTL

This hostname does not publish an MTA-STS policy (no v=STSv1 TXT at _mta-sts.<name> and/or no policy at https://mta-sts.<name>/.well-known/mta-sts.txt).

Text Content

TTL
MS=ms63434478
1m
MS=ms65563480
1m
adobe-idp-site-verification=2bc320369e66ce417ef3dd3de88c68d1b0946998b6655ea65e0921625c10458a
1m
adobe-idp-site-verification=32e6a19cbac0aaa1bf1282828160983e0161508d610d9e8cd3413476fc850e4d
1m
airtable-verification=061d9401d7d237e02773f8ea0d864225
1m
airtable-verification=cb2119bb1c925674362e1bb9d971e544
1m
aliyun-site-verification=2065e344-0356-4065-9388-7035ebeef6c3
1m
aliyun-site-verification=3005cfd9-28c9-4d8e-98c1-72d0f9a9906d
1m
aliyun-site-verification=4e18a98c-d56b-4566-8119-6d8408dcbb22
1m
aliyun-site-verification=c7d50a66-a55b-40ea-977d-dcc17d7171da
1m
aliyun-site-verification=ca6c4b65-de53-4a2f-bb66-0896ca4e070a
1m
aliyun-site-verification=ec998802-b69f-4ddd-9c64-781f31b9cd22
1m
aliyun-site-verification=fe4daab8-13bd-4ac9-b6dc-24adf7beb95a
1m
amazonses:CrSRW1r5FkJJfD8bu25hoZ3H4iU4FWBE5DHGNG5FMRE=
1m
amazonses:hjkf8iCvlG6M5vzfQS6knu9rEgWY7iENH58oxn71fMg=
1m
amazonses:s1ybIXu5VAbPu7uaJG7Ay6LGb2klmHlbNrKA+qkL5io=
1m
anthropic-domain-verification-518w0x=55BVbatHFIINbExajmJlHLeKv
1m
asv=459f9f930252dc61a466a9ccdb7828f2
1m
atlassian-domain-verification=1KXvLNzt/HSUc6gun2e7YGOeMc0aHKpGtpNkhzleZSaGFM0Y6jD9o9pJ7ahpo28w
1m
atlassian-domain-verification=Ko/7kQrTuxBu0Lj6zQjlHnkDv8HYstdGmcs/66ddYS7qp4zlxnjlzZva0jj2IipM
1m
atlassian-domain-verification=NzXzg26UWjNJ/KJ15uo0dPfDczVpriU3VE1qd9lMUIFDFqpS0F9ad42VA5aQzQje
1m
atlassian-domain-verification=bk4wc1r-AN1NOe7oTzqyf+e656EwR0lM9bGOwyEpj/GkZbrb64Af7X5ZHk35/jJo
1m
atlassian-domain-verification=mwQLqIeWHm2hKqlDUZAGfpCEurAQS3pzobvCrt0nUR8/pAqFC/oo46veYShwHG/c
1m
atlassian-domain-verification=r3JgisYgfjhPzBLra6EggpnSBp7L2q8gpd/riLyo6uB3JgZR2dwueUQUcCMriajA
1m
brevo-code:5d58621877b999d1f55e58641668e385
1m
brevo-code:7421957d3c5a23ead96b4e40cde7f5bf
1m
cisco-ci-domain-verification=4f24f6046415feba24466bad602439302627d2991becfe7ee694199f8254a04c
1m
cloudhealth=949c8507-5fc3-45f7-b509-dba6ca56e47b
1m
cursor-domain-verification-5gcgdr=GvcGsCRycRbRTEOjynFV8JmA7
1m
cursor-domain-verification-cm20wn=Va8rsxcPcTPPTo6ypWkIWcOAK
1m
docker-verification=a3cb7f08-7162-4383-b121-666df292a986
1m
docusign=3046a212-0cea-434b-a152-ec30c5f00c13
1m
docusign=8713107b-33b4-495b-b065-f739671c546f
1m
e2ma-verification=qk1fb
1m
google-site-verification=7jzXyy460kI2kfWxHXIuJqMCzskw-9hzh2ERwQExZf8
1m
google-site-verification=D5PYYTnmaO2remKusJrfvV6TY8JuxKHZ-WEjTis4H2A
1m
google-site-verification=D_tULu7pbV8xis-ur3qx-xqZuvNSql0bjHPFldKNxWU
1m
google-site-verification=MTFB1yPZ6Jt2bTquWoLoDCPD425suyn2Uqq3ndGj_1s
1m
google-site-verification=_t_yFbcgeuqO_CrKwiFfCGinAd0pC6QwhV9Cc4Z75Ck
1m
infoblox-domain-mastery=448a574f0b33ca44e970c1858e0a5cb6d9a6efdc8140a44a6cbd414782e011d7b4
1m
intersight=ece513f8bb4ec122623bc60978a523dfaab13fceee53736616965c675562d2a0
1m
miro-verification=147f64f22fa1a97df76f47224f8c5d93cbb84f2c
1m
neat-pulse-domain-verification-1vBDllM=9c21ded0-c01f-4f56-982b-8c0e0f502249
1m
onetrust-domain-verification=2daa7b87e3864b7d88d55893a361c4ba
1m
pardot892491=e59cd2a2eee2e0a316fd934c1861961f9e1fbd8f7c089a262f58e759f99002c9
1m
pardot910432=8827164fef0cc11d6d746476c0ce8d98bd39137f4a148fb3dfdafff408e6e982
1m
pendo-domain-verification=Hb-63hTahYsq9D4yrGfjq9Rwpa8
1m
pendo-domain-verification=N3UrsyVRibmYwBIh1KZhTsduX8U
1m
pexip-ms-tenant-domain-verification=ff9191d6-ff13-4a89-a059-def01c15d296
1m
shopify-verification-code=KV5mNR05JdQfIAD2I4ZQGZL6Q8i5rf
1m
status-page-domain-verification=nn6vpm1r7vs8
1m
windsurf-verification=Ho5e-MxquwvJqFsmeYPkKFHjL4G-duj4QKLAeJtVgLE=
1m
yahoo-verification-key=IHEiiM2t2G9Ap8Z4/SgwDzofdFLYaHD8JRL88NqyJH4=
1m
zoho-verification=zb62038945.zmverify.zoho.com
1m
TXT
5Zv4csO7SYFrGobEug9zQyMbm9vD3msqkhk5r2RizYcPpRC1iIh7BCx5Ust4nBq/Cr5xmqera803+a5ittmCHQ==
1m
TXT
DirectFedAuthUrl=https://spglobal.okta.com/app/spglobal_pwcdac6smartreportingtool_1/exkr7gbzdkgkX8Gp85d7/sso/saml
1m
TXT
EE6jzbyR_w-ASC4pC5id
1m
TXT
PRMNFcUV4ui3Tm3J-k8v
1m
TXT
_hh898dpckm58ox7h0bw0qpwhla2zjg4
1m
TXT
db7o3fksry4lw.cloudfront.net
1m
TXT
dbb422937d7ff56e049d61da730b3e11
1m
TXT
ece513f8bb4ec122623bc60978a523dfaab13fceee53736616965c675562d2a0
1m
TXT
https://spglobal.okta.com/app/exkr7gbzdkgkX8Gp85d7/sso/saml/metadata
1m
TXT
sending_domain989632=42df4b634431521ba7f1866ab401ad5db1ff68fca26108c971b50cac6b7938a3
1m
TXT
yMwK1h05IkDA3nvHLIJc/lQoc4xNe9QUNmCvfV7aNZA=
1m