HOW.IS
?

How is oreilly.com?

Looks fine risk 0/100

Registered 29 years ago, on no blocklists we checked, valid HTTPS, the site answered 200 in 275 ms.

Why

02050100
finecarefulhigh risk
  • ·Nothing in the checks added risk.

Rule-based: domain age, blocklists, TLS. A heuristic, not a guarantee.

How oreilly.com looks right now
The home page, rendered by how.is in a sandboxed browser. Nothing on it is clickable here.
Site
200
275 ms · ends at www.oreilly.com
HTTPS
75 d
left on a Let's Encrypt certificate
Age
29 years
registered 1997-05-27
Blocklists
0
listings across 5 lists

Everything we looked at

DNS records5 record types
A34.169.83.167
MX5 alt2.aspmx.l.google.com
5 alt1.aspmx.l.google.com
10 aspmx3.googlemail.com
1 aspmx.l.google.com
10 aspmx2.googlemail.com
NSa1-225.akam.net
a20-66.akam.net
a3-67.akam.net
a16-65.akam.net
a4-64.akam.net
a13-64.akam.net
TXTatlassian-domain-verification=GJgQnpbhHf0SwculXnJahDb8IZbK2ZXhc5tVW2ZaEx1rCwyJAN6Mq3JwtfTn5X5s
stripe-verification=FA0A5DF1B861B5632D3B866D38C3327CB0C01D0591C3FAE956610D4BC68DEA64
1g9d3pyyw5xdhpty461591rx8qtp6y6z
ZOOM_verify_t_KNmIKiQZKkyVMeJxpjnA
sophos-domain-verification=2ec763c10efd73f2c1dbceaad2983ea0093f02a5882445675f0885ffcf6ce608
MS=ms43057904
pardot1009792=4c05d6fbc27aa34baa25bd9d175c4f3be8941b4c77ce5fba6e78022fdfe194fb
zapier-domain-verification-challenge=6257ac03-13a2-49f0-bf05-cff1cac20573
stripe-verification=f9c7baf61f54571ffe67b1c557dea5380c1afd51153b97ca71724438405f855b
logmein-verification-code=35fc191f-9043-4216-8bf4-88a05c9e8768
openai-domain-verification=dv-p9JzdykFvVDoSGxyY4Y6Y143
v=spf1 include:_spf.google.com include:amazonses.com include:spf.mandrillapp.com include:spf.mtasv.net include:mktomail.com include:_spf.salesforce.com ip4:199.27.144.40 ip4:199.83.45.18 ip4:199.83.45.19 ip4:199.83.45.110 ip4:199.83.45.111 ip4:199.83.47.124 ip4:199.83.47.125 ip4:162.42.207.20 ip4:208.76.31.37 ip4:162.42.214.212 ip4:104.192.140.117 ip4:72.18.192.0/24 ip4:66.179.217.0/26 ip4:173.209.243.64/26 -all
_acme-challenge.omg.oreilly.com.=70A5bqLKoqpSLcGV6WvAQdrNND1WibK55qbSBMsvOjM
airtable-verification=1f9f5306621f76be14eb5cde11661c2d
openai-domain-verification=dv-ZU9jzgezaEHhPW3jhinsYiGi
OczFEA1OJs6vDuh7lvXFAcHDrCMg0Bgq35GaGBcrZqs
onetrust-domain-verification=ae63e0829f794f8eaa9d46794a8e6073
rzp-site-verification=a854b4a8b6cd7bfd0c5ebe4edcf00c18
BlueXPf24d34d4-6c8c-4419-b3be-53abc864b788
_awp3n9ftycdhffo7xr550f0qy0e8xuf
MS=ms79198677
docker-verification=993bde06-01c2-4c04-a1c6-d840bddb0611
smartsheet-site-validation=fxm70bCfI2yjd4sAuYUP7eTOck334VGo
_acme-challenge.get.oreilly.com. =L56-9KXCPqPkf5v8bwnTyDjY0p91zvmSsY3mpZ9NmoU
_yikoj59erdx9jd4sti8idhii7nvf9x2
_figma_sites_verify_customersuccess
globalsign-domain-verification=aei6eSS-1p0PqmZ3x4jXFoJt_7l6MenGY6u2FV45qG
oci-domain-verification=mwjZ7A40UhcYmctnsvlpDQ4zebV3j9jVCIAqGBSkx
d7kfp9gbnkkvp5vvphuv80s4oc
cloudhealth=45f9c4a4-d1eb-4252-b4a1-7d7bb9004040
onetrust-domain-verification=54ccc7392b084e48acfcbc164e2a0ba6
MS=E75517AC6D8C7C76D0C87E3CF6ABD5F68B91610C
google-site-verification=neBJBV38v3xXAew00QEe1whxoBx-y0oo0-9840fBTek
anthropic-domain-verification-dnrkbn=q9EUze0gStRgj4wmYfJUGB6V2
apple-domain-verification=CObFhoTOkqx87oIs
1password-site-verification=YL4MABUTMFAGTAOZTL6TFWZWBU
calendly-site-verification=KRdabjWvHMSpj0d7HZ7WgAZXIGkbywfZWqJCGrIYd
m7zd1crqvftqsgdf8v889l9zdqhk3p07
adobe-idp-site-verification=ad56f341-bb17-4470-8efa-9a9b9c121a4a
google-site-verification=0QeIVzKsJaBLMuz3ZQ1rVpVCmumDKYRlvZ8fRExJ81Y
_c5xkp6qqlmxx3yajtdb4hqhz82rsazn
CAA{'type': 'CAA', 'issue': 'pki.goog', 'critical': 0}
{'type': 'CAA', 'issue': 'letsencrypt.org', 'critical': 0}
{'type': 'CAA', 'issue': 'godaddy.com', 'critical': 0}
{'type': 'CAA', 'issue': 'digicert.com', 'critical': 0}
{'type': 'CAA', 'issue': 'amazon.com', 'critical': 0}
{'type': 'CAA', 'iodef': 'mailto:itops@oreilly.com', 'critical': 0}
RegistrationGoDaddy.com, LLC
registrarGoDaddy.com, LLC
registered1997-05-27
expires2027-05-26
last changed2026-04-16
ownerDomains By Proxy, LLC
nameserversa1-225.akam.net
a13-64.akam.net
a16-65.akam.net
a20-66.akam.net
a3-67.akam.net
a4-64.akam.net
statusclient delete prohibited
client renew prohibited
client transfer prohibited
client update prohibited
delete prohibited
transfer prohibited
renew prohibited
update prohibited
registered 1997-05-27expires 2027-05-26
HTTPS certificate75 days left
validyes
issuerLet's Encrypt
coversanz.oreilly.com, aportal.oreilly.com, archive.oreilly.com, careers.oreilly.com, community.oreilly.com, foocamp.oreilly.com, forums.oreilly.com, fyi.oreilly.com, java.oreilly.com, jobs.oreilly.com, library.oreilly.com, mandrake.oreilly.com
protocolTLSv1.3
issued 2026-10-17expires 2027-01-15
DNSSECinsecure

Domain is not signed with DNSSEC

. → com → oreilly.com
Email authenticationgood
SPFpass v=spf1 include:_spf.google.com include:amazonses.com include:spf.mandrillapp.com include:spf.mtasv.net include:mktomail.com include:_spf.salesforce.com ip4:199.27.144.40 ip4:199.83.45.18 ip4:199.83.45.19 ip4:199.83.45.110 ip4:199.83.45.111 ip4:199.83.47.124 ip4:199.83.47.125 ip4:162.42.207.20 ip4:208.76.31.37 ip4:162.42.214.212 ip4:104.192.140.117 ip4:72.18.192.0/24 ip4:66.179.217.0/26 ip4:173.209.243.64/26 -all
DMARCwarning policy quarantine
DKIMfound: google, s1, s2

Whether mail claiming to be from this domain can be checked as genuine.

Security scoregrade B · 165/205
Basic Security
10/40missing: DNSSEC Enabled, Nameserver Diversity
Record Security
45/45missing: DKIM Presence
Advanced Security
15/25missing: SOA Record Configuration, IPv6 Support
Domain Reputation
50/50
Threat Detection
45/45missing: Domain Age Check
Blocklists0 listings · 5 lookups
SURBL MultidomainURIBL MultidomainSpamCop34.169.83.167Barracuda34.169.83.167UCEPROTECT Level 134.169.83.167

Green: clean. Red: listed. Grey: the list did not answer.

Ask it yourself

Agents get this as data. Bought through the API, the checks behind this page cost $0.070: profile $0.025 + trust $0.020 + screenshot $0.020 + site status $0.005.

curl "https://how.is/v1/domain/trust?domain=oreilly.com" \ -H "Authorization: Bearer $HOWIS_KEY" # or pay per call in USDC (x402), no key: the 402 tells your agent the price curl -i "https://how.is/v1/domain/profile?domain=oreilly.com"

MCP: add https://how.is/mcp to Claude, Codex or Cursor (one-line install) and ask for domain_trust on oreilly.com. Reference: /llms.txt.

IPv6. IPv6 readiness grade for oreilly.com Does oreilly.com work over IPv6? See the live check on aaaa.bot — website, mail and nameservers, graded A–F.

Watch oreilly.com. DNS read at the source every 5 minutes; certificate, blocklists and expiry every 6 hours. You get an email only when something changes.

Watch — $1 / 30 days