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83
Total
80
DNS
90
Email
77
Security
55
Network
100
Availability
Domaindrawdown.org
IPv41
IPv62
MX records5
StatusActive
Domain technical report

Project Drawdown®

drawdown.org

Project Drawdown drives meaningful climate action by advancing science-based solutions and strategies.

Generated: 2026-08-11T08:02:13-05:00 · Cached result

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IPv41
IPv62
MX5
NS3

DiagnosticsMain findings and recommendations

✓
IPv4 (A)30 / 30 pts · Dns

1 IPv4 address(es) detected.

✓
IPv6 (AAAA)10 / 10 pts · Dns

2 IPv6 address(es) detected.

✓
Name server redundancy20 / 20 pts · Dns

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

✓
SOA record10 / 10 pts · Dns

Authoritative zone record.

!
DNSSEC chain0 / 15 pts · Dns

Both DS and DNSKEY are required.

!
CAA policy0 / 5 pts · Dns

Certificate authority restriction.

✓
DNS propagation10 / 10 pts · Dns

Agreement between public resolvers.

✓
MX records20 / 20 pts · Mail

5 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-RPT0 / 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 headers12 / 35 pts · Security

3 of 9 evaluated headers detected.

!
PTR reverse DNS0 / 30 pts · Network

PTR not detected.

i
IPv4 diversity20 / 35 pts · Network

Two or more IPv4 addresses receive full points.

✓
IPv6 connectivity35 / 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)
23.185.0.4

AAAA

2 record(s)
2620:12a:8000::4
2620:12a:8001::4

CNAME

0 record(s)
—

Not configured

MX

5 record(s)
5 ALT2.ASPMX.L.GOOGLE.COM.
10 ALT4.ASPMX.L.GOOGLE.COM.
10 ALT3.ASPMX.L.GOOGLE.COM.
5 ALT1.ASPMX.L.GOOGLE.COM.
1 ASPMX.L.GOOGLE.COM.

TXT

10 record(s)
"v=spf1 include:tigertech.net include:_spf.google.com include:servers.mcsv.net include:outboundmail.blackbaud.net include:_spf.createsend.com ~all"
"google-site-verification=kH9BaX2SYgbUUMRqtvQC0YVs9QP_qdbqjH1AyVpCNe4"
"google-site-verification=kM_enXOsvWc0eHzevGYBp6UI_Ffknc6N4NCcPeRkr2E"
"google-site-verification=VDNivnZDRkfwK8p0d2Thx0frEfb3Y6UuLexXFD9v3s8"
"google-site-verification=mgm8_ymKifTwEKga9JUCw9337DiHZnBl8Ev0Sl1fGB0"
"google-site-verification=r-55d8i-RFbtF9OPbNK13z0H7WhgH-ObYtaZ3KXCrHQ"
"MS=ms38635894"
"asv=2d807c8a161247dcda48991ca6aaebd7"
"google-site-verification=RWMEhKVJ5KTWPBkxF3-axa32uCtFKc1YiKfeYDI37Kw"
"asv=8bdfa050dffc963ab17bc0d18382e5b6"

NS

3 record(s)
ns3.tigertech.org.
ns2.tigertech.biz.
ns1.tigertech.net.

SOA

1 record(s)
ns1.tigertech.net. support.tigertech.net. 2026072303 7200 1800 1209600 900

CAA

0 record(s)
—

Not configured

DS

0 record(s)
—

Not configured

DNSKEY

0 record(s)
—

Not configured

RRSIG

0 record(s)
—

Not configured

NSEC

0 record(s)
—

Not configured

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 include:tigertech.net include:_spf.google.com include:servers.mcsv.net include:outboundmail.blackbaud.net include:_spf.createsend.com ~all

DMARC

Configured
v=DMARC1; p=quarantine

DKIM

Selector k1
k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDbNrX2cY/GUKIFx2G/1I00ftdAj713WP9AQ1xir85i89sA2guU0ta4UX1Xzm06XIU6iBP41VwmPwBGRNofhBVR+e6WHUoNyIR4Bn84LVcfZE20rmDeXQblIupNWBqLXM1Q+VieI/eZu/7k9/vOkLSaQQdml4Cv8lb3PcnluMVIhQIDAQAB;

Analyzed webpageMetadata and HTTP response

Title and description

Extracted
Title
Project Drawdown®
Description
Project Drawdown drives meaningful climate action by advancing science-based solutions and strategies.
Final URL
https://drawdown.org/
HTTP status
206

HTTP

Status
HTTP/2 200
Final URL
https://drawdown.org/
Version
3
Server
nginx
X-Powered-By

SSL and HTTP securityCertificate, protocol and security headers

SSL certificate

Available
Available
Yes
Issuer
Let's Encrypt
CN
drawdown.org
Valid from
2026-08-02T12:08:24-05:00
Valid until
2026-10-31T12:08:23-05:00
Days remaining
81
Protocol
TLSv1.3
Cipher
TLS_AES_128_GCM_SHA256

Security headers

3 active
✓
HSTSImplemented
—
Content Security PolicyNot detected
✓
X-Content-Type-OptionsImplemented
✓
X-Frame-OptionsImplemented
—
Referrer PolicyNot detected
—
Permissions PolicyNot detected
—
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
23.185.0.4
94,52 ms
Cloudflare
1.1.1.1
23.185.0.4
106,81 ms
Quad9
9.9.9.9
23.185.0.4
150,88 ms
OpenDNS
208.67.222.222
23.185.0.4
123,05 ms
AdGuard
94.140.14.14
23.185.0.4
474,33 ms

IP, geolocation and ASNAssociated network information

23.185.0.4

Identified
success
Yes
country
United States
country_code
US
region
California
city
San Francisco
latitude
37.7749113
longitude
-122.4185412
asn
54113
organization
Pantheon
isp
Fastly, Inc.
timezone
America/Los_Angeles

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

ALT2.ASPMX.L.GOOGLE.COM

Port 25: Closed/unreachable - 0.6 ms - 
Port 465: Closed/unreachable - 4016.9 ms - 
Port 587: Closed/unreachable - 4014.6 ms -

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