sfopera.com

.com crawl

First seen 2026-04-21 · Last seen 2026-05-17 · ok HTTP/1.1 200 1393 ms crawled 2026-05-14

SE · 217.114.94.2 · AS30811 Optimizely AB

Reputation 95/100 weak security headers

Classifying

HTML metadata

Title: San Francisco Opera | SF Opera
Description: San Francisco Opera performance and the War Memorial Opera House and is known for commissioning world premieres, training opera's greatest young artists, and being one of the world’s leading opera companies.
Language: en

Open Graph

url: https://www.sfopera.com/
title: San Francisco Opera | SF Opera

Technology

CDN: Cloudflare
CMS: Gatsby

Analytics

Google Tag Manager

Third-party hosts loaded (8)

app-script.monsido.com×2
unpkg.com×2
cdn.jsdelivr.net×1
cdn.pagesense.io×1
cdn.userway.org×1
players.brightcove.net×1
www.facebook.com×1
www.googletagmanager.com×1

Social

Contact

Email

patronservices@sfopera.com

Phone

Registration

Registrar

Network Solutions, LLC

Created

1995-05-02

Expires

2029-05-03 1078 days left

Updated

2023-04-21

Name servers

ns1-07.azure-dns.com
ns2-07.azure-dns.net
ns3-07.azure-dns.org
ns4-07.azure-dns.info

DNS records live

NS

ns1-07.azure-dns.com
ns2-07.azure-dns.net
ns3-07.azure-dns.org
ns4-07.azure-dns.info

MX

0 sfopera-com.mail.protection.outlook.com

TXT

Show 7 TXT records

c3kulpf1qfp8aq56jf292vs151
hNwBdqSdor2TBBFk3Kh3gvprIPJFGUwlNAklavt9DrsHHqL7kuwDqweSauEHdkG91ka+U5iUoLH5ry/utQJ1rw==
s7om8tsd3se7fhblktkmcv24a8
lotvj7puf2sb4t4hlr83s2mlq9
mandrill_verify.vKTc8ESMJCZJyjXnVMiZlQ
0ed1fe018ade635b037812499dbda0b1c1100e5e1f
a8rsupssf1ifnu23varc49f9o5

Verified for

Microsoft 365

Email authentication strong

SPF

v=spf1 include:_u.sfopera.com._spf.dmarcld.com include:spf.protection.outlook.com -all

strict (-all)

DMARC

v=DMARC1; p=quarantine; rua=mailto:636d8484a925e@ag.dmarcly.com; ruf=mailto:636d8484a925e@fo.dmarcly.com; sp=none; fo=0;

policy: quarantine · sp=none

DKIM

Show 6 DKIM selectors

selector1: v=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDW+5FI90wmXY4w/cDAENU/BBgssG/5KsuO5FnH1sUIlFVY56hH6ouAutES1XtQLG5+FojyxrYQAlwnvHSnMq…
selector2: v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEArK7t9i3AM9IWnqUwCGiWpvBHwlntWbWYS43NdyihYBZsduzXWcSlod0bHeyTDMT4mx/1NLZg1A7Y2k…
k2: v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAv2aC2KjGKLOwTweBY5A9RpjsxaBXR9r7OAU6U8/zn92ivImI75naUujWbItRI/QmL1jy5PWGqLwoUA…
s1: k=rsa; t=s; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAvBN4snzctLi7qTF/W2oJrJziXAcBgU0dnaVMP0fifCeM8qBH2LlnWoDLnmVp5+R4UqHENbmL7f6MoJMyye…
s2: k=rsa; t=s; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAuA0wywefxf7mRlObDsj4JhhMcpBvvop1C+CLoPIp8V94ZQUcgD5DA9dcKHGEwCT2iTT19GJYTzGi3+Az/f…
smtpapi: k=rsa; t=s; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDPtW5iwpXVPiH5FzJ7Nrl8USzuY9zqqzjE0D1r04xDN6qwziDnmgcFNNfMewVKN2D1O+2J9N14hRprzByFwfQW76…

selectors probed

Certificate (current)

WE1

from 2026-04-21 to 2026-07-20

Expires in 61 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 45/100 Checked live page: https://www.sfopera.com/

present

strict-transport-security

findings

short HSTS max-age
missing Content Security Policy
missing frame protection
missing content type protection
missing Referrer Policy
missing Permissions Policy

Header values

strict-transport-security: max-age=2592000