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87
Total
85
DNS
90
Email
84
Security
70
Network
100
Availability
Domainsourceforge.net
IPv42
IPv62
MX records1
StatusActive
Domain technical report

Compare B2B Software, Download, & Develop Open Source & Business Software - SourceForge

sourceforge.net

SourceForge is the complete software discovery platform. SourceForge is the largest B2B software review and comparison site in the world, and features the largest business software directory, as well as free & fast open source software downloads and development.

Generated: 2026-08-08T17:09:01-05:00 · Cached result

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IPv42
IPv62
MX1
NS6

DiagnosticsMain findings and recommendations

✓
IPv4 (A)30 / 30 pts · Dns

2 IPv4 address(es) detected.

✓
IPv6 (AAAA)10 / 10 pts · Dns

2 IPv6 address(es) detected.

✓
Name server redundancy20 / 20 pts · Dns

6 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 policy5 / 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-RPT0 / 5 pts · Mail

TLS reporting policy.

✓
Valid TLS certificate55 / 55 pts · Security

17 day(s) remaining.

i
Certificate lifetime6 / 10 pts · Security

Full points require at least 30 days remaining.

i
HTTP security headers23 / 35 pts · Security

6 of 9 evaluated headers detected.

!
PTR reverse DNS0 / 30 pts · Network

PTR not detected.

✓
IPv4 diversity35 / 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

2 record(s)
104.18.12.149
104.18.13.149

AAAA

2 record(s)
2606:4700::6812:c95
2606:4700::6812:d95

CNAME

0 record(s)
—

Not configured

MX

1 record(s)
10 mx.sourceforge.net.

TXT

10 record(s)
"v=spf1 include:sparkpostmail.com include:servers.mcsv.net ip4:216.105.38.0/26 -all"
"abuseipdb-verification=dvyMFAir"
"yandex-verification: eddadce308154a90"
"brave-ledger-verification=09845b65316c1613c72337595c391c4675fff6ae8923768232dc3f6c661af14b"
"ca3-33e180a2afaa4c86951f4a8ad123e300"
"google-site-verification=HugCfmT_JOUQaz6xbszx1O9W3ccm_Dh5GiageK7egmM"
"SourceForge, Inc."
"ca3-8b7801430b214be99a3325aab5d0d899"
"tollbit-domain-verification=bae1f5123238c200f3429dba2556501be81cc1ab0b0f0692146e362a49979895"
"ca3-1594c24430d2487fad7bceaec2fa251f"

NS

6 record(s)
ns51.constellix.net.
ns11.constellix.com.
ns41.constellix.net.
ns21.constellix.com.
ns61.constellix.net.
ns31.constellix.com.

SOA

1 record(s)
ns11.constellix.com. dns.constellix.com. 2015014848 43200 3600 1209600 180

CAA

5 record(s)
0 iodef "mailto:siteops@slashdotmedia.com"
0 issue "sectigo.com"
0 issue "letsencrypt.org"
0 issue "digicert.com"
0 issue "amazon.com"

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:sparkpostmail.com include:servers.mcsv.net ip4:216.105.38.0/26 -all

DMARC

Configured
v=DMARC1; p=quarantine; rua=mailto:ipm1wcw@ar.glockapps.com,mailto:kgtkm21q@ag.dmarcian.com; ruf=mailto:ipm1wcw@fr.glockapps.com; fo=1; sp=none;

DKIM

Selector x
v=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCdaR/98pMWddS+zAoJOvJt+c0EQRiz11JPUwFTkf7vft5MYRGnl/HrjPWDSOIJE7Rqg6EEbW+0MPcj/PIajC58QvV6Xo6gzskvXSl+n4/He/GwoAP63Pan/gaxXaTYsOFSgCeg1PglB9v5MVc8AdvY30nVgGZn1evQvlbwJDGDtwIDAQAB

Analyzed webpageMetadata and HTTP response

Title and description

Extracted
Title
Compare B2B Software, Download, & Develop Open Source & Business Software - SourceForge
Description
SourceForge is the complete software discovery platform. SourceForge is the largest B2B software review and comparison site in the world, and features the largest business software directory, as well as free & fast open source software downloads and development.
Final URL
https://sourceforge.net/
HTTP status
200

HTTP

Status
HTTP/2 200
Final URL
https://sourceforge.net/
Version
3
Server
cloudflare
X-Powered-By

SSL and HTTP securityCertificate, protocol and security headers

SSL certificate

Available
Available
Yes
Issuer
Let's Encrypt
CN
sourceforge.net
Valid from
2026-05-27T20:39:44-05:00
Valid until
2026-08-25T20:39:43-05:00
Days remaining
17
Protocol
TLSv1.3
Cipher
TLS_AES_256_GCM_SHA384

Security headers

6 active
✓
HSTSImplemented
✓
Content Security PolicyImplemented
✓
X-Content-Type-OptionsImplemented
✓
X-Frame-OptionsImplemented
—
Referrer PolicyNot detected
✓
Permissions PolicyImplemented
✓
Cross-Origin-Opener-PolicyImplemented
—
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
104.18.12.149, 104.18.13.149
152,00 ms
Cloudflare
1.1.1.1
104.18.12.149, 104.18.13.149
19,47 ms
Quad9
9.9.9.9
104.18.12.149, 104.18.13.149
23,91 ms
OpenDNS
208.67.222.222
104.18.12.149, 104.18.13.149
128,38 ms
AdGuard
94.140.14.14
104.18.12.149, 104.18.13.149
47,35 ms

IP, geolocation and ASNAssociated network information

104.18.12.149

No data
success
No
country
region
city
asn
organization
isp

104.18.13.149

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

mx.sourceforge.net

Port 25: Closed/unreachable - 10.1 ms - 
Port 465: Closed/unreachable - 4028.5 ms - 
Port 587: Closed/unreachable - 4020.4 ms -

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