DNS Lookup
Choose a DNS record type to search for.
Propagation & diagnostics
Compare resolvers worldwide and inspect returned answers.
Keep history, monitor your zones and automate recurring checks.
Email authentication
Tools to verify and validate your email authentication setup.
Deliverability
Email deliverability audit
Audit MX, SPF, DKIM and DMARC to confirm a domain is ready to send.
Mail header analyzer
Decode participants, authentication results and routing from raw headers.
Email tester
Send a test email and get instant authentication and deliverability feedback.
IP Blacklist Checker
Check if your IP is on email blacklists
Domain Blacklist Checker
Check if your domain is on URI blacklists
SPF Flattener
Flatten SPF records to reduce DNS lookups below the 10-lookup limit.
DKIM Selector Finder
Auto-discover all DKIM selectors for a domain via DNS brute-force.
SMTP/MX Tester
Test SMTP connectivity of your MX servers: banner, STARTTLS, TLS certificate, open relay.
IP tools
Quickly inspect an IP address or your own connection.
My IP address
Detect your IPv4/IPv6 addresses and their geolocation.
Reverse lookup
Resolve a PTR record and validate DNS consistency.
IP WhoIs
Identify the owner of an IP range and its contacts.
IPv4 netmask
Calculate network, broadcast and usable hosts for any IPv4 block.
IPv6 subnet calculator
Calculate IPv6 subnets, address ranges and reverse DNS entries.
Text
Transform and measure your content in seconds.
Text case converter
Convert any block of text to upper or lower case instantly.
Slug generator
Transform any sentence into an SEO-friendly slug in seconds.
Word & character counter
Measure the length of any text, with instant word and character counts.
Password generator
Generate strong random passwords and memorable passphrases instantly.
Developer
Encoding, hashing, regex and formatting for everyday dev work.
Base64 encoder / decoder
Encode or decode any content in Base64 without leaving the browser.
Hash Generator
Compute MD5, SHA-1, SHA-256 and SHA-512 hashes of any text.
URL encoder / decoder
Encode or decode text using percent-encoding (RFC 3986) right in your browser.
Regex Tester
Test a regular expression against text and visualize matches.
JSON / YAML Formatter
Format, validate and convert JSON and YAML in one click.
Web & Certificates
BIMI logos, VMC/CSR certificates and web page diagnostics.
BIMI logo lookup
Inspect a BIMI logo URL - format, metadata and live rendering - before rollout.
BIMI SVG converter
Convert any SVG to BIMI-compliant Tiny-PS format in seconds.
CSR parser
Inspect a CSR, extract subject details, fingerprints and requested SANs.
VMC inspector
Inspect a Verified Mark Certificate - issuer, validity and SAN coverage - before you publish BIMI.
Page size checker
Check if your page exceeds Google's 2 MB crawl limit.
Phishing URL Checker
Check if a URL is flagged as phishing or malware by 4 threat intelligence sources.
Weekly audit of email security across 101 companies in the Nasdaq 100.
Nasdaq · 101 companies analysed · Scan week: 2026-03-02
Average score
49/ 100
DMARC reject
65.3%
BIMI configured
23%
MTA-STS enforce
2%
DNSSEC enabled
18.8%
49
Average
52
Median
0
Min
79
Max
| Grade | |||
|---|---|---|---|
| 1 | CrowdStrikecrowdstrike.com | 79 | B |
| 2 | Palo Alto Networkspaloaltonetworks.com | 73 | B |
| 3 | Thomson Reuters Corporationthomsonreuters.com | 73 | B |
| 4 | PayPalpaypal.com | 72 | B |
| 5 | DoorDashdoordash.com | 71 | B |
| 6 | Cadence Design Systemscadence.com | 70 | B |
| 7 | Broadcombroadcom.com | 70 | B |
| 8 | Cintascintas.com | 70 | B |
| 9 | Kraft Heinzkraftheinzcompany.com | 68 | C |
| 10 | Baker Hughesbakerhughes.com | 67 | C |
| 11 | Amgenamgen.com | 67 | C |
| 12 | ASML Holdingasml.com | 67 | C |
| 13 | Applied Materialsappliedmaterials.com | 66 | C |
| 14 | Microsoftmicrosoft.com | 66 | C |
| 15 | Gilead Sciencesgilead.com | 66 | C |
| 16 | Autodeskautodesk.com | 64 | C |
| 17 | MicroStrategy Incorporatedmicrostrategy.com | 63 | C |
| 18 | Airbnbairbnb.com | 59 | C |
| 19 | Starbucksstarbucks.com | 59 | C |
| 20 | American Electric Poweraep.com | 58 | C |
| 21 | Automatic Data Processingadp.com | 58 | C |
| 22 | Diamondback Energydiamondbackenergy.com | 58 | C |
| 23 | Netflixnetflix.com | 58 | C |
| 24 | Regeneron Pharmaceuticalsregeneron.com | 58 | C |
| 25 | Costcocostco.com | 58 | C |
| 26 | MercadoLibre Inc.mercadolibre.com | 57 | C |
| 27 | Shopifyshopify.com | 57 | C |
| 28 | Take-Two Interactivetake2games.com | 56 | C |
| 29 | O’Reilly Automotiveoreillyauto.com | 56 | C |
| 30 | Workday, Inc.workday.com | 56 | C |
| 31 | Zscaler Inc.zscaler.com | 55 | C |
| 32 | Axon Enterpriseaxon.com | 55 | C |
| 33 | Ciscocisco.com | 55 | C |
| 34 | Microchip Technologymicrochip.com | 55 | C |
| 35 | Paccarpaccar.com | 55 | C |
| 36 | Qualcommqualcomm.com | 55 | C |
| 37 | Seagate Technologyseagate.com | 55 | C |
| 38 | Texas Instrumentsti.com | 55 | C |
| 39 | Verisk Analyticsverisk.com | 55 | C |
| 40 | Intuitive Surgicalintuitive.com | 54 | C |
| 41 | Analog Devicesanalog.com | 54 | C |
| 42 | Honeywellhoneywell.com | 54 | C |
| 43 | Monster Beveragemonsterbevcorp.com | 53 | C |
| 44 | KLA Corporationkla.com | 53 | C |
| 45 | Old Dominionodfl.com | 53 | C |
| 46 | Comcastcomcastcorporation.com | 52 | C |
| 47 | Cognizantcognizant.com | 52 | C |
| 48 | Micron Technologymicron.com | 52 | C |
| 49 | Linde plclinde.com | 52 | C |
| 50 | Dexcomdexcom.com | 52 | C |
| 51 | PepsiCopepsico.com | 52 | C |
| 52 | Synopsyssynopsys.com | 52 | C |
| 53 | Roper Technologiesropertech.com | 52 | C |
| 54 | Apple Inc.apple.com | 52 | C |
| 55 | Fortinetfortinet.com | 51 | C |
| 56 | Marvell Technology Inc.marvell.com | 51 | C |
| 57 | Nvidianvidia.com | 51 | C |
| 58 | GE HealthCaregehealthcare.com | 50 | C |
| 59 | Xcel Energyxcelenergy.com | 50 | C |
| 60 | Insmed Incorporatedinsmed.com | 49 | D |
| 61 | Ferrovial SEferrovial.com | 49 | D |
| 62 | Palantir Technologiespalantir.com | 49 | D |
| 63 | Warner Bros. Discoverywbd.com | 49 | D |
| 64 | Vertex Pharmaceuticalsvrtx.com | 48 | D |
| 65 | Fastenalfastenal.com | 47 | D |
| 66 | Atlassian Corporationatlassian.com | 47 | D |
| 67 | Adobe Inc.adobe.com | 47 | D |
| 68 | Electronic Artsea.com | 46 | D |
| 69 | Arm Holdings plcarm.com | 46 | D |
| 70 | NXP Semiconductorsnxp.com | 46 | D |
| 71 | Meta Platformsmeta.com | 46 | D |
| 72 | CSX Corporationcsx.com | 46 | D |
| 73 | Walmartwalmart.com | 44 | D |
| 74 | Idexx Laboratoriesidexx.com | 44 | D |
| 75 | Intuitintuit.com | 44 | D |
| 76 | Paychexpaychex.com | 44 | D |
| 77 | Booking Holdingsbookingholdings.com | 43 | D |
| 78 | Advanced Micro Devicesamd.com | 43 | D |
| 79 | Datadogdatadoghq.com | 43 | D |
| 80 | AppLovinapplovin.com | 43 | D |
| 81 | Western Digitalwesterndigital.com | 41 | D |
| 82 | Mondelez Internationalmondelezinternational.com | 41 | D |
| 83 | T-Mobile USt-mobile.com | 41 | D |
| 84 | Alphabet Inc. (Class A)abc.xyz | 41 | D |
| 85 | Intelintel.com | 40 | D |
| 86 | CoStar Groupcostargroup.com | 40 | D |
| 87 | Marriott Internationalmarriott.com | 39 | D |
| 88 | Lam Researchlamresearch.com | 39 | D |
| 89 | Tesla, Inc.tesla.com | 39 | D |
| 90 | Alnylam Pharmaceuticalsalnylam.com | 38 | D |
| 91 | PDD Holdings Inc.pddholdings.com | 38 | D |
| 92 | Copartcopart.com | 36 | D |
| 93 | Amazonamazon.com | 33 | D |
| 94 | Exelonexeloncorp.com | 32 | D |
| 95 | Keurig Dr Pepperkeurigdrpepper.com | 30 | D |
| 96 | Ross Storesrossstores.com | 26 | F |
| 97 | Charter Communicationscorporate.charter.com | 15 | F |
| 98 | Coca-Cola Europacific Partners PLCcocacolaep.com | 8 | F |
| 99 | Alphabet Inc. (Class C)alphabet(classc).com | 0 | F |
| 100 | Constellation Energyconstellationenergy.com | 0 | F |
| 101 | Monolithic Power Systemsmonolithicpowersystems.com | 0 | F |
A stock index groups the largest companies in a market. Analyzing their email security provides a representative snapshot of how a country's or region's corporate sector protects against email-based threats.
What this page shows:
Each company is evaluated on:
-all (hard fail)?quarantine or reject?Q: How are companies scored?
A: Each domain is analyzed for email authentication standards and awarded up to 100 points across three pillars.
Q: What does the grade distribution show?
A: The spread of scores from A+ to F, indicating overall index maturity.
Q: Can I compare indices?
A: Yes, via the Statistics page.
| Page | Purpose |
|---|---|
| Observatory Dashboard | Overall overview with key metrics |
| Statistics | Cross-index and cross-sector comparison |
| Email Domain Check | Audit your own domain |