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Total

DNS

Email

Security

Network

100

Availability

Domainrheumatology.org

IPv41

IPv60

MX records1

StatusActive

Domain technical report

American College of Rheumatology

rheumatology.org

Learn about the American College of Rheumatology, a non-profit, professional association committed to advancing the specialty of rheumatology. The ACR serves nearly 9,100 physicians, health professionals, and scientists worldwide who work in the medical subspecialty of rheumatology.

Generated: 2026-08-10T22:03:43-05:00 · Cached result

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IPv41

IPv60

MX1

NS4

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

4 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.

✓

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

33 day(s) remaining.

✓

Certificate lifetime10 / 10 pts · Security

Full points require at least 30 days remaining.

HTTP security headers27 / 35 pts · Security

7 of 9 evaluated headers detected.

PTR reverse DNS0 / 30 pts · Network

PTR not detected.

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)

76.76.21.21

AAAA

0 record(s)

—

Not configured

CNAME

0 record(s)

—

Not configured

MX

1 record(s)

1 rheumatology-org.mail.protection.outlook.com.

TXT

17 record(s)

"ZOOM_verify_SAKnq2aLUYTGTuu2dbuWCP"
"atlassian-domain-verification=gbUvhpFXTW9UFlbBYuMrvze+e+etNYjFRj3QzUputkC3zgw57ls59/Rzb7lUQsTe"
"google-site-verification=N5G3lS8sP079xo-Ny0xOqijIaaA0ORv_1vJAoJcfgSA"
"asv=2121ab4b06cd3e422b3d797239d0a5b0"
"anthropic-domain-verification-xpadk5=3cm1sWsPjd51UC8E2rwoS81JC"
"google-site-verification=oKDyGWnUnOdd6MZIe9cpocWnohela1Xqfoxyu_qJDyw"
"apple-domain-verification=x6V0lGsxh9zhSIID"
"google-site-verification=Ha23cExHqD_0pZlcs-w-tSHjwR9q2GPy72vNhUwWe5s"
"MS=ms50231836"
"31D322DB398F8E61A601E678213AF0FE18E68B80"
"canva-site-verification=pa6VYQAVa7wm5fLP8YeFTg"
"00D6A000001j5iq=1TBVS000000052w"
"atlassian-domain-verification=RoHunrDOHDxbJpfuEJkzjXekyL9z9uLR6w6dYqxxDlZuuGjamEXbe5odEZxa2Fn/"
"v=spf1 include:spf.protection.outlook.com include:_spf.salesforce.com include:autotask.net include:_spf.saashr.com include:sendgrid.net ip4:52.73.203.75 ip4:44.193.121.189 ip4:76.223.136.223 ip4:76.223.136.224 ip4:159.183.151.104 ip4:208.117.52.113 ip4:10" "4.18.6.51 ip4:104.18.7.51 ip4:104.18.30.23 ip4:104.18.31.23 ip4:34.102.239.211 ip4:129.159.87.137 ip4:132.145.13.209 ip4:132.226.49.32 ip4:129.80.67.121 ip4:152.70.155.126 ip4:158.101.211.207 ip4:141.148.159.229 ip4:129.153.62.216 ip4:129.154.255.129 ip4:" "129.159.22.159 ip4:129.153.168.146 ip4:164.152.25.241 ip4:192.18.139.154 ip4:64.181.194.190 ip4:132.226.26.225 ip4:129.151.67.221 ip4:130.162.39.83 ip4:144.24.6.140 ip4:129.80.5.164 ip4:129.153.194.228 ip4:129.153.104.71 ip4:132.226.56.24 ip4:193.122.128." "100 ip4:193.123.56.63 ip4:129.213.195.191 ip4:152.69.200.236 ip4:204.216.164.202 ip4:150.230.98.160 ip4:168.138.73.51 ip4:130.61.9.72 ip4:129.153.190.200 ip4:168.138.237.153 ip4:152.67.105.195 ip4:163.192.116.87 ip4:155.248.208.51 ip4:168.138.5.36 ip4:129" ".146.88.28 ip4:129.146.236.58 ip4:129.146.147.105 ip4:164.152.23.32 ip4:64.181.213.254 ip4:207.54.86.45 ip4:143.220.15.0/24 ip4:216.71.144.176 ip4:143.220.32.0/24 ip4:143.220.17.0/24 ip4:207.67.38.0/24 ip4:207.250.68.26 ip4:66.231.83.109 ip4:66.231.85.0/2" "4 ip4:66.231.93.184 ip4:66.231.92.253 ip4:136.147.181.0/24 ip4:13.111.30.0/24 ip4:13.111.39.0/24 ~all"
"stripe-verification=cce81e8f531dd2bcaeb53612c48d6cb4682d7ab908b67b0e5b770854d3f2cf54"
"00DVG000006lNk5=1TBVG0000000G1Z"
"ms-domain-verification=b3197a57-f5ac-4b89-b885-d54c89aa70ed"

NS

4 record(s)

ns4-04.azure-dns.info.
ns3-04.azure-dns.org.
ns1-04.azure-dns.com.
ns2-04.azure-dns.net.

SOA

1 record(s)

ns1-04.azure-dns.com. azuredns-hostmaster.microsoft.com. 1 3600 300 2419200 300

SPF

Configured

v=spf1 include:spf.protection.outlook.com include:_spf.salesforce.com include:autotask.net include:_spf.saashr.com include:sendgrid.net ip4:52.73.203.75 ip4:44.193.121.189 ip4:76.223.136.223 ip4:76.223.136.224 ip4:159.183.151.104 ip4:208.117.52.113 ip4:104.18.6.51 ip4:104.18.7.51 ip4:104.18.30.23 ip4:104.18.31.23 ip4:34.102.239.211 ip4:129.159.87.137 ip4:132.145.13.209 ip4:132.226.49.32 ip4:129.80.67.121 ip4:152.70.155.126 ip4:158.101.211.207 ip4:141.148.159.229 ip4:129.153.62.216 ip4:129.154.255.129 ip4:129.159.22.159 ip4:129.153.168.146 ip4:164.152.25.241 ip4:192.18.139.154 ip4:64.181.194.190 ip4:132.226.26.225 ip4:129.151.67.221 ip4:130.162.39.83 ip4:144.24.6.140 ip4:129.80.5.164 ip4:129.153.194.228 ip4:129.153.104.71 ip4:132.226.56.24 ip4:193.122.128.100 ip4:193.123.56.63 ip4:129.213.195.191 ip4:152.69.200.236 ip4:204.216.164.202 ip4:150.230.98.160 ip4:168.138.73.51 ip4:130.61.9.72 ip4:129.153.190.200 ip4:168.138.237.153 ip4:152.67.105.195 ip4:163.192.116.87 ip4:155.248.208.51 ip4:168.138.5.36 ip4:129.146.88.28 ip4:129.146.236.58 ip4:129.146.147.105 ip4:164.152.23.32 ip4:64.181.213.254 ip4:207.54.86.45 ip4:143.220.15.0/24 ip4:216.71.144.176 ip4:143.220.32.0/24 ip4:143.220.17.0/24 ip4:207.67.38.0/24 ip4:207.250.68.26 ip4:66.231.83.109 ip4:66.231.85.0/24 ip4:66.231.93.184 ip4:66.231.92.253 ip4:136.147.181.0/24 ip4:13.111.30.0/24 ip4:13.111.39.0/24 ~all

DMARC

Configured

v=DMARC1; p=reject; pct=100; rua=mailto:DMARC@rheumatology.org

DKIM

Selector selector1

v=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDZQQGXlAl+F++QsG3AtxtX39cjxDAhYt75JDmkyRjNhpV/ONKURUf81HGf9CoxK9OmqiJJG3y/TAx7GhGFkdtNI24DF1aUJxSQrWTRq72u5jITdrHERvlyJOaG6Cild6Oormj7Hwi8jpwqrk0P++OCA/8ok8GZLdtkxxvS/9RSNQIDAQAB;

Analyzed webpageMetadata and HTTP response

Title and description

Extracted

Title

American College of Rheumatology

Description

Final URL

https://rheumatology.org/

HTTP status

200

HTTP

Status

HTTP/2 200

Final URL

https://rheumatology.org/

Version

Server

Vercel

X-Powered-By

Next.js

SSL and HTTP securityCertificate, protocol and security headers

SSL certificate

Available

Yes

Issuer

Let's Encrypt

rheumatology.org

Valid from

2026-06-15T13:47:26-05:00

Valid until

2026-09-13T13:47:25-05:00

Days remaining

Protocol

TLSv1.3

Cipher

TLS_AES_128_GCM_SHA256

Security headers

7 active

✓

HSTSImplemented

✓

Content Security PolicyImplemented

✓

X-Content-Type-OptionsImplemented

✓

X-Frame-OptionsImplemented

✓

Referrer PolicyImplemented

✓

Permissions PolicyImplemented

—

Cross-Origin-Opener-PolicyNot detected

—

Cross-Origin-Embedder-PolicyNot detected

✓

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

76.76.21.21

76,61 ms

Cloudflare

1.1.1.1

76.76.21.21

84,11 ms

Quad9

9.9.9.9

76.76.21.21

99,96 ms

OpenDNS

208.67.222.222

76.76.21.21

84,68 ms

AdGuard

94.140.14.14

76.76.21.21

307,31 ms

IP, geolocation and ASNAssociated network information

76.76.21.21

No data

success

country

region

city

asn

organization

isp

Visitor information

Visitor

216.73.217.62

reverse

country

country_code

region

city

latitude

longitude

isp

organization

asn

timezone

browser

Other

language

user_agent

Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)

is_bot

Yes

cloudflare

SMTPEmail port connectivity

rheumatology-org.mail.protection.outlook.com

Port 25: Closed/unreachable - 18 ms - 
Port 465: Closed/unreachable - 4045.7 ms - 
Port 587: Closed/unreachable - 4001.6 ms -

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