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86
Total
85
DNS
95
Email
84
Security
50
Network
100
Availability
Domainjwz.org
IPv41
IPv60
MX records1
StatusActive
Domain technical report

jwz.org

jwz.org

Jamie Zawinski was one of the founders of Netscape and Mozilla.org, was the primary developer of Lucid Emacs, and wrote most of your screen savers. Today he is the proprietor of DNA Lounge, an all ages dance club and live music venue in San Francisco.

Generated: 2026-08-10T13:30:54-05:00 · Cached result

JSONCSVPDFVisit site
IPv41
IPv60
MX1
NS2

DiagnosticsMain findings and recommendations

✓
IPv4 (A)30 / 30 pts · Dns

1 IPv4 address(es) detected.

!
IPv6 (AAAA)0 / 10 pts · Dns

0 IPv6 address(es) detected.

✓
Name server redundancy20 / 20 pts · Dns

2 NS record(s); 2 or more required.

✓
SOA record10 / 10 pts · Dns

Authoritative zone record.

✓
DNSSEC chain15 / 15 pts · Dns

DS and DNSKEY detected.

!
CAA policy0 / 5 pts · Dns

Certificate authority restriction.

✓
DNS propagation10 / 10 pts · Dns

Agreement between public resolvers.

✓
MX records20 / 20 pts · Mail

1 MX record(s).

✓
SPF25 / 25 pts · Mail

SPF policy published.

✓
DMARC25 / 25 pts · Mail

DMARC policy published.

✓
DKIM20 / 20 pts · Mail

A DKIM selector was verified.

!
MTA-STS0 / 5 pts · Mail

Mail transport policy.

✓
TLS-RPT5 / 5 pts · Mail

TLS reporting policy.

✓
Valid TLS certificate55 / 55 pts · Security

81 day(s) remaining.

✓
Certificate lifetime10 / 10 pts · Security

Full points require at least 30 days remaining.

i
HTTP security headers19 / 35 pts · Security

5 of 9 evaluated headers detected.

✓
PTR reverse DNS30 / 30 pts · Network

PTR: www.dnalounge.com

i
IPv4 diversity20 / 35 pts · Network

Two or more IPv4 addresses receive full points.

!
IPv6 connectivity0 / 35 pts · Network

AAAA availability.

✓
DNS resolution40 / 40 pts · Availability

At least one address family must resolve.

✓
HTTP response40 / 40 pts · Availability

HTTP/2 200

✓
HTTPS final URL20 / 20 pts · Availability

Final URL uses HTTPS.

DNS and emailPublished records and email configuration

A

1 record(s)
3.16.178.106

AAAA

0 record(s)
—

Not configured

CNAME

0 record(s)
—

Not configured

MX

1 record(s)
5 mail.jwz.org.

TXT

3 record(s)
"google-site-verification=riXr4fhH9FzWQkub9EHMtrdhCXf0TFzXw_4M-_l2AIw"
"v=spf1 redirect=dnalounge.com"
"google-site-verification=F2c2Lq9Tgk-Bpoq8n4M0ojhNa3mhhfDtnStU6WeYYRE"

NS

2 record(s)
NS6.PAIRNIC.COM.
NS5.PAIRNIC.COM.

SOA

1 record(s)
ns5.pairnic.com. root.pair.com. 2026063061 3600 300 604800 3600

CAA

0 record(s)
—

Not configured

DS

4 record(s)
15900 13 2 343441864E60D7FF2708F60E78C36D8ACE6F817C6A677FC86FDD2333 1350B32C
6222 13 2 15AB6FBF63C9C6CC6EA1853ACF1AF80252F847103106C14DAF4C543E E31EA7DA
39376 13 4 DC64E4CE1549B603E6D6377C920617E441964797EF4209E21E9F6ECC E203D4F116D99072BDFC8D3CFA8A4BAC1C35CF52
39376 13 2 46FDC91388B09A12BC28D8D9651535556CE2D2A8B57D95902D6C49C5 5AF0207A

DNSKEY

3 record(s)
256 3 13 IN3ZmounZX1kT3OSF2iAm+IoUdNCxFyqk2CCxOVCoLlmW8874XEK/oNi Tdge8AVeIpi956PLqsJdwHKHH3rEbA==
256 3 13 BR4aSuwccQiFwlycQNL1PcvnP9dayheljTbNtbEb04d0/8PLJBcZoXYW QDbYxQ6+s30QItEnl5w0HAOlFG7Beg==
257 3 13 qf0PLb7rJnFV5447yErdP47DCsaK6TI2gFNJ+6hA8eQMSBP5RwOIWl4q bRecj2nJNGbhLCeHvctNIkQ5PmXK2g==

RRSIG

4 record(s)
SOA 13 2 3600 20260820000000 20260730000000 51688 jwz.org. WK/uYGXwANPV2K2GD2YMv3OM8o36YN5FMxLp+ahSWJCMcJCu10cZT6kQ ygmbPx46Wlj/NLPLA2KQskr3Q8Culg==
NS 13 2 3600 20260820000000 20260730000000 51688 jwz.org. CyrGHSQB9N2qH6ALFNmKWC9MApZr08LhrY+aN5Fp+69+OOMcbbiQFHTA Vd2Hs8lWJC3epeTwwlHk4tr+cujKQw==
TXT 13 2 3600 20260820000000 20260730000000 51688 jwz.org. lXv73ukTt0pFI7qY05+6RnUnEWE4jqyBd4KwjZ4z4t6Qbp4d9UvXidbP JUeQ7swwIYhEqsoOpiFRDhWFRNDWaw==
DS 8 2 3600 20260830152406 20260809142406 44925 org. s0hPoV55W8zLCCbW+i1Zwb/Ht+DKWrs8Aln/tjH9yoa+vY2yC1a/mOBo 5QY7Obgy2wJjvrtLojKFRzECmXNcHS31yMOYSGxlxbwi42FbJV69al8n vWoQkQypGDkUoqKskoBpxdEILhLQCXOPZlMd3GE9i5xfbC/HTrRo1E/0 XIo=

NSEC

1 record(s)
_amazonses.jwz.org. A NS SOA MX TXT RRSIG NSEC DNSKEY

NSEC3

0 record(s)
—

Not configured

SRV

0 record(s)
—

Not configured

NAPTR

0 record(s)
—

Not configured

TLSA

0 record(s)
—

Not configured

SSHFP

0 record(s)
—

Not configured

SPF

Configured
v=spf1 redirect=dnalounge.com

DMARC

Configured
v=DMARC1; p=reject; rua=mailto:dmarc@jwz.org; fo=1

DKIM

Selector mail
v=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDvJCT2a2nQ/eVFZk06oNjjQVfVr1BWwkJJC73iPkCFw1yJr+1bJUJb+EqzjlghUccwXuWcjAiCaUUPaN4/ut3snNgy0xM4QavGc8o4m/hAUWFfegsg/EeSXTH0XSAga3KD15+hT+YtuE8x6cIoS/TJFV679RzYosWJAdxgpRTPfwIDAQAB

Analyzed webpageMetadata and HTTP response

Title and description

Extracted
Title
jwz.org
Description
Jamie Zawinski was one of the founders of Netscape and Mozilla.org, was the primary developer of Lucid Emacs, and wrote most of your screen savers. Today he is the proprietor of DNA Lounge, an all ages dance club and live music venue in San Francisco.
Final URL
https://www.jwz.org/
HTTP status
206

HTTP

Status
HTTP/2 200
Final URL
https://www.jwz.org/
Version
3
Server
Mosaic Netsite Commerce Server/1.0.0 (Irix)
X-Powered-By

SSL and HTTP securityCertificate, protocol and security headers

SSL certificate

Available
Available
Yes
Issuer
Let's Encrypt
CN
jwz.org
Valid from
2026-08-02T06:06:41-05:00
Valid until
2026-10-31T06:06:40-05:00
Days remaining
81
Protocol
TLSv1.3
Cipher
TLS_AES_256_GCM_SHA384

Security headers

5 active
✓
HSTSImplemented
✓
Content Security PolicyImplemented
✓
X-Content-Type-OptionsImplemented
✓
X-Frame-OptionsImplemented
—
Referrer PolicyNot detected
✓
Permissions PolicyImplemented
—
Cross-Origin-Opener-PolicyNot detected
—
Cross-Origin-Embedder-PolicyNot detected
—
Cross-Origin-Resource-PolicyNot detected

DNS propagationComparison across public resolvers

Public resolver comparison

Consistent
✓
Consistent propagation

5 public resolvers queried.

ResolverServerResultLatency
Google
8.8.8.8
3.16.178.106
60,53 ms
Cloudflare
1.1.1.1
3.16.178.106
138,47 ms
Quad9
9.9.9.9
3.16.178.106
122,07 ms
OpenDNS
208.67.222.222
3.16.178.106
135,07 ms
AdGuard
94.140.14.14
3.16.178.106
652,81 ms

IP, geolocation and ASNAssociated network information

3.16.178.106

No data
success
No
country
region
city
asn
organization
isp

Visitor information

Visitor
ip
216.73.217.62
reverse
country
country_code
region
city
latitude
longitude
isp
organization
asn
timezone
browser
Other
os
Other
language
user_agent
Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)
is_bot
Yes
cloudflare
No

SMTPEmail port connectivity

mail.jwz.org

Port 25: Closed/unreachable - 18.8 ms - 
Port 465: Closed/unreachable - 12.7 ms - 
Port 587: Closed/unreachable - 12.7 ms - 220 www.dnalounge.com ESMTP mail.dnalounge.com

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