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SGSiteGraph

0spam.org website report

0spam Project | Anti-Spam Solutions for ESPs & ISPs. | 0spam Project

Last scanned

Overall score

Fair

About 0spam.org

0spam.org is a website. It describes itself as “Free DNSBL, DNSWL, URLBL and RBL for Service Providers”.

Technologies
0
Email security
B
80/100
Trackers
—
AI crawlers
—
Carbon / visit
A+
0.04 g CO2
Domain age
—

Score profile

SEO65Performance100Security70Accessibility60
This siteAll scanned sites median

Top issues to fix

10 issues found · 4 high priority

  • Missing Strict-Transport-Security header

    Security

    Add HSTS so browsers always use HTTPS — this closes the protocol-downgrade attack window.

  • Missing Content-Security-Policy header

    Security

    Add a CSP to control which sources can run scripts — the strongest single defense against XSS.

  • No H1 heading found

    SEO

    Add exactly one H1 describing the page's main topic — it anchors the document outline for search engines and screen readers.

  • Over half of images are missing alt text

    Accessibility

    Add alt attributes to images — screen readers depend on them, and they help image SEO.

  • Missing X-Frame-Options header

    Security

    Add X-Frame-Options (or a CSP frame-ancestors rule) to prevent clickjacking via hidden iframes.

  • Title longer than 60 characters

    SEO

    Shorten the title to under 60 characters so search results don't truncate it.

+4 more issues — details in the sections below.

Not enough scan history yet to show a trend — check back after this site has been re-scanned a few more times.

How it compares

0spam.org scores higher overall than 20% of the 163,243 sites we have scanned.

vs. All scanned sites

163,243 sites
Overall20th
SEO40th
Performance70th
Security40th
Accessibility5th

The dot is this site; the tick is the typical (median) score for the group. The number on the right is the percentile: the share of the group this site scores above.

Technology stack

No technologies were detected in the latest scan.

Hosting & DNS

Domain
0spam.org
IP address
—
ASN
—
IPv6
Not supported
HTTP
HTTP/2
0
A
0
AAAA
0
MX
0
NS
0
TXT
0
CAA
Show DNS record values

TXT record contents are not republished; only their count is shown.

Security

0spam.org uses TLS 1.3 with a certificate valid for 42 more days and sets 1 of 6 recommended security headers.

Security

Security headers1 of 6 set

  • HSTS
    Forces HTTPS
  • CSP
    Blocks injected scripts
  • X-Frame-Options
    Stops clickjacking
  • X-Content-Type
    Stops MIME sniffing
  • Referrer-Policy
    Limits URL leakage
  • Permissions-Policy
    Restricts browser features

TLS certificate

VerifiedTLS 1.3 · Let's Encrypt
Jul 8, 202642 days leftOct 6, 2026
Names covered
3
Cookies set
1

Email security

0spam.org scores B for email security, with SPF and DMARC policy “reject”.

B
80 / 100
  • SPFGood

    Rejects senders not listed (-all).

  • DMARCGood

    Forged mail is rejected; reports are collected.

  • MTA-STSNot set

    Not published; mail to this domain can be downgraded to plaintext.

  • BIMIGood

    Brand logo published for supporting inboxes.

Performance & carbon

0spam.org scores 100/100 for performance, with an estimated load time of 0.5 s. A visit emits an estimated 0.04 g of CO2 (grade A+).

Performance

Page weight

  • HTML 58.9 KB
  • JavaScript 30.2 KB
  • CSS 15.9 KB
Est. load
500 ms
Response
499 ms
Scripts / CSS
2 / 0

Carbon per visitA+

A+ABCDEF

0.04 g CO2 per uncached view

Estimate from the Sustainable Web Design model. HTML, JavaScript and CSS only; images, video and fonts are not measured. Treat it as a lower bound for comparing pages, not an audit.

SEO & accessibility

0spam.org scores 65/100 for SEO and 60/100 for accessibility, with 5 SEO issues to fix.

SEO
Accessibility

Heading structure

H10H24H31H40H50H60

No H1 found.

Image alt text

0%

2 images · 2 without alt text · 0 lazy-loaded

Links

  • Internal 15
  • External 2
  • Broken 17

SEO issues5

  • Title longer than 60 characters
  • No H1 heading found
  • No structured data (JSON-LD) found
  • robots.txt not found
  • sitemap.xml not found

Accessibility issues2

  • Over half of images are missing alt text
  • No H1 heading found

Technical details

Page metadata, social tags, crawl files and scan information.

Meta tags

Title
0spam Project | Anti-Spam Solutions for ESPs & ISPs. | 0spam Project
Description
Free DNSBL, DNSWL, URLBL and RBL for Service Providers. IP removal services, premium notification services and more.
Canonical
https://0spam.org:443
Language
en
Robots meta

Open Graph & Twitter

og:title
0spam Project | Anti-Spam Solutions for ESPs & ISPs.
og:type
website
twitter:card
—
twitter:title
—

Crawl files

robots.txt
Not found
Disallow rules
0
sitemap.xml
Not found
URLs in sitemap
0

Structured data

No JSON-LD types declared.

Microdata items
0
RDFa items
0

Scan

Final URL
https://0spam.org
HTTP status
200
Redirects
https://0spam.org
Scanned
Aug 24, 2026, 1:23 PM

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Frequently asked questions about 0spam.org

What is 0spam.org?
0spam.org is a website. It describes itself as “Free DNSBL, DNSWL, URLBL and RBL for Service Providers”.
Is 0spam.org secure?
0spam.org uses TLS 1.3 with a certificate valid for 42 more days and sets 1 of 6 recommended security headers.
Is 0spam.org protected against email spoofing?
0spam.org scores B for email security, with SPF and DMARC policy “reject”.
How does 0spam.org compare with similar sites?
0spam.org scores higher overall than 20% of the 163,243 sites we have scanned.
What is 0spam.org's overall score?
0spam.org has an overall SiteGraph score of 74/100, combining SEO (65), performance (100), security (70) and accessibility (60).