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81
Total
80
DNS
45
Email
100
Security
70
Network
100
Availability
Domaincurl.se
IPv44
IPv68
MX records1
StatusActive
Domain technical report

curl

curl.se

Generated: 2026-08-08T19:12:17-05:00 · Cached result

JSONCSVPDFVisit site
IPv44
IPv68
MX1
NS5

DiagnosticsMain findings and recommendations

✓
IPv4 (A)30 / 30 pts · Dns

4 IPv4 address(es) detected.

✓
IPv6 (AAAA)10 / 10 pts · Dns

8 IPv6 address(es) detected.

✓
Name server redundancy20 / 20 pts · Dns

5 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

1 MX record(s).

✓
SPF25 / 25 pts · Mail

SPF policy published.

!
DMARC0 / 25 pts · Mail

DMARC policy not found.

!
DKIM0 / 20 pts · Mail

No tested DKIM selector responded.

!
MTA-STS0 / 5 pts · Mail

Mail transport policy.

!
TLS-RPT0 / 5 pts · Mail

TLS reporting policy.

✓
Valid TLS certificate55 / 55 pts · Security

85 day(s) remaining.

✓
Certificate lifetime10 / 10 pts · Security

Full points require at least 30 days remaining.

✓
HTTP security headers35 / 35 pts · Security

9 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

4 record(s)
151.101.193.91
151.101.65.91
151.101.129.91
151.101.1.91

AAAA

8 record(s)
2a04:4e42:200::347
2a04:4e42:a00::347
2a04:4e42:e00::347
2a04:4e42:c00::347
2a04:4e42::347
2a04:4e42:800::347
2a04:4e42:400::347
2a04:4e42:600::347

CNAME

0 record(s)
—

Not configured

MX

1 record(s)
10 mail.haxx.se.

TXT

2 record(s)
"fastly-domain-delegation-lk4328dd00dsaa-305976-20201102"
"v=spf1 -all"

NS

5 record(s)
nx3.named.se.
ns1.haxx.se.
ns.amplitut.de.
nx2.named.se.
nx1.named.se.

SOA

1 record(s)
ns1.haxx.se. info.haxx.se. 2026061601 3600 15 86400 3600

CAA

0 record(s)
—

Not configured

DS

0 record(s)
—

Not configured

DNSKEY

0 record(s)
—

Not configured

RRSIG

1 record(s)
NSEC 8 2 7200 20260821023250 20260807010250 9573 se. jIwcxXdgkdYaZ5iwU18+C9KZYq5s/0x2kRyvXYUiUA//wL74NxAud5DW tgyxFG1fZjOSw7asysNWXrFvAKi9v6UPoG2pmLBM6L37hIQKoTHuub0i mrZGFx3046CxseZinQ6jC2w2sQ01wUKoqzJ3OfIkIEEWuNNUOt4Rost2 2hgi8ghZzOWIhEqdKVqcpb8Yz6qlwEwlagvxmwostSioExhHoIMGNBTV fg3H+8jvpUwK8iEp71PazrtXxljop6eQN1T+Gk+hauyOQ5aH1YljNFW5 vEULKIqzHp5eADipOXcKjUw5d0J9ZvaxAS3nDVOneCHPpuvIi/HYG4SN 63B7kA==

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 -all

DMARC

Not configured
—

Not configured

DKIM

Not found
—

Not configured

Analyzed webpageMetadata and HTTP response

Title and description

Extracted
Title
curl
Description
Final URL
https://curl.se/
HTTP status
206

HTTP

Status
HTTP/2 200
Final URL
https://curl.se/
Version
3
Server
nginx/1.31.3
X-Powered-By

SSL and HTTP securityCertificate, protocol and security headers

SSL certificate

Available
Available
Yes
Issuer
Let's Encrypt
CN
curl.se
Valid from
2026-08-04T09:43:24-05:00
Valid until
2026-11-02T08:43:23-06:00
Days remaining
85
Protocol
TLSv1.3
Cipher
TLS_AES_128_GCM_SHA256

Security headers

9 active
✓
HSTSImplemented
✓
Content Security PolicyImplemented
✓
X-Content-Type-OptionsImplemented
✓
X-Frame-OptionsImplemented
✓
Referrer PolicyImplemented
✓
Permissions PolicyImplemented
✓
Cross-Origin-Opener-PolicyImplemented
✓
Cross-Origin-Embedder-PolicyImplemented
✓
Cross-Origin-Resource-PolicyImplemented

DNS propagationComparison across public resolvers

Public resolver comparison

Consistent
✓
Consistent propagation

5 public resolvers queried.

ResolverServerResultLatency
Google
8.8.8.8
151.101.1.91, 151.101.129.91, 151.101.193.91, 151.101.65.91
40,36 ms
Cloudflare
1.1.1.1
151.101.1.91, 151.101.129.91, 151.101.193.91, 151.101.65.91
35,44 ms
Quad9
9.9.9.9
151.101.1.91, 151.101.129.91, 151.101.193.91, 151.101.65.91
36,49 ms
OpenDNS
208.67.222.222
151.101.1.91, 151.101.129.91, 151.101.193.91, 151.101.65.91
34,86 ms
AdGuard
94.140.14.14
151.101.1.91, 151.101.129.91, 151.101.193.91, 151.101.65.91
52,89 ms

IP, geolocation and ASNAssociated network information

151.101.193.91

No data
success
No
country
region
city
asn
organization
isp

151.101.65.91

No data
success
No
country
region
city
asn
organization
isp

151.101.129.91

No data
success
No
country
region
city
asn
organization
isp

151.101.1.91

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.haxx.se

Port 25: Closed/unreachable - 246.3 ms - 
Port 465: Closed/unreachable - 120.1 ms - 
Port 587: Closed/unreachable - 363.6 ms - 220 silly.haxx.se ESMTP Postfix (Debian/GNU)

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