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74
Total
70
DNS
70
Email
73
Security
35
Network
100
Availability
Domainsteelers.com
IPv44
IPv60
MX records2
StatusActive
Domain technical report

Steelers Home | Pittsburgh Steelers - Steelers.com

steelers.com

Pittsburgh Steelers Home: The official source of the latest Steelers headlines, news, videos, photos, tickets, rosters, stats, schedule, and game day information

Generated: 2026-08-12T08:18:51-05:00 · Cached result

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IPv44
IPv60
MX2
NS2

DiagnosticsMain findings and recommendations

✓
IPv4 (A)30 / 30 pts · Dns

4 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 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

2 MX record(s).

✓
SPF25 / 25 pts · Mail

SPF policy published.

✓
DMARC25 / 25 pts · Mail

DMARC policy published.

!
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

41 day(s) remaining.

✓
Certificate lifetime10 / 10 pts · Security

Full points require at least 30 days remaining.

i
HTTP security headers8 / 35 pts · Security

2 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 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

4 record(s)
151.101.1.55
151.101.129.55
151.101.193.55
151.101.65.55

AAAA

0 record(s)
—

Not configured

CNAME

0 record(s)
—

Not configured

MX

2 record(s)
10 us-smtp-inbound-1.mimecast.com.
10 us-smtp-inbound-2.mimecast.com.

TXT

16 record(s)
"756538586-16465384"
"google-site-verification=R422nbAUfG48bjTANxdSWO6XTCvh8mOggCyH9aatJ5o"
"tia539jmlm322sjmk62idkstjf"
"facebook-domain-verification=908rukmpnfjmnahjbpdbnfiw23ljam"
"MS=ms29400681"
"globalsign-domain-verification=QIz4Dkgnzvuf_ODt1ig-vDCfiMQCGSPHLjxcG5uNpQ"
"globalsign-domain-verification=MkNYVzw6WD4PZ-SSbyE4p2nTRKUxeB17nnnYjev0eu"
"rlp7cdu1c8nta490c5310h760j"
"fastly-domain-delegation-9qz9wwyjebcujbaqcjre-761117-2024-04-29"
"0ed1fe018ab83af2ff6f3d450baebff6d278ebb9ad"
"v=spf1 include:us._netblocks.mimecast.com include:spf.protection.outlook.com include:em8371.steelers.com include:_spf.engagement.ticketmaster.com.pub-tmaws.io ~all"
"apple-domain-verification=DSo9FAq-gTjXm-KMqkDBNMJaHQwx2Yhm9gnc0wVage4"
"n8bpin8n1h4g4278hn7luf463k"
"q1qvqvnjkui60v0gt01t470rbl"
"rovag_verification_token=60925A56C59F46C7AD4C80FA7D90A849"
"MS=ms97660231"

NS

2 record(s)
udns1.ultradns.net.
udns2.ultradns.net.

SOA

1 record(s)
udns1.ultradns.net. dm\.infra.nfl.com. 2016073628 60 60 3600000 300

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:us._netblocks.mimecast.com include:spf.protection.outlook.com include:em8371.steelers.com include:_spf.engagement.ticketmaster.com.pub-tmaws.io ~all

DMARC

Configured
v=DMARC1; p=reject; fo=1; rua=mailto:dmarc@steelers.nfl.com; ruf=mailto:dmarc@steelers.nfl.com

DKIM

Not found
—

Not configured

Analyzed webpageMetadata and HTTP response

Title and description

Extracted
Title
Steelers Home | Pittsburgh Steelers - Steelers.com
Description
Pittsburgh Steelers Home: The official source of the latest Steelers headlines, news, videos, photos, tickets, rosters, stats, schedule, and game day information
Final URL
https://www.steelers.com/
HTTP status
206

HTTP

Status
HTTP/2 200
Final URL
https://www.steelers.com/
Version
3
Server
istio-envoy
X-Powered-By

SSL and HTTP securityCertificate, protocol and security headers

SSL certificate

Available
Available
Yes
Issuer
Let's Encrypt
CN
clubs.nfl.com
Valid from
2026-06-24T12:32:26-05:00
Valid until
2026-09-22T12:32:25-05:00
Days remaining
41
Protocol
TLSv1.3
Cipher
TLS_AES_128_GCM_SHA256

Security headers

2 active
✓
HSTSImplemented
—
Content Security PolicyNot detected
✓
X-Content-Type-OptionsImplemented
—
X-Frame-OptionsNot detected
—
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
151.101.1.55, 151.101.129.55, 151.101.193.55, 151.101.65.55
102,66 ms
Cloudflare
1.1.1.1
151.101.1.55, 151.101.129.55, 151.101.193.55, 151.101.65.55
57,39 ms
Quad9
9.9.9.9
151.101.1.55, 151.101.129.55, 151.101.193.55, 151.101.65.55
74,06 ms
OpenDNS
208.67.222.222
151.101.1.55, 151.101.129.55, 151.101.193.55, 151.101.65.55
106,20 ms
AdGuard
94.140.14.14
151.101.1.55, 151.101.129.55, 151.101.193.55, 151.101.65.55
58,91 ms

IP, geolocation and ASNAssociated network information

151.101.1.55

No data
success
No
country
region
city
asn
organization
isp

151.101.129.55

No data
success
No
country
region
city
asn
organization
isp

151.101.193.55

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

151.101.65.55

No data
success
No
country
region
city
asn
organization
isp

Visitor information

Visitor
ip
216.73.216.212
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

us-smtp-inbound-1.mimecast.com

Port 25: Closed/unreachable - 1.2 ms - 
Port 465: Closed/unreachable - 4021.1 ms - 
Port 587: Closed/unreachable - 28.9 ms - 220 us-smtp-inbound-1.mimecast.com ESMTP; Wed, 12 Aug 2026 09:18:50 -0400

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