jfbrennan.com

.com crawl

First seen 2026-04-16 · Last seen 2026-05-15 · ok HTTP/1.1 200 1279 ms crawled 2026-05-11

US · 15.197.225.128 · AS16509 Amazon.com, Inc.

Reputation 100/100

Classifying

HTML metadata

Title: J.F. Brennan Company Homepage
Description: We are a specialty marine contractor for environmental, dam construction, submarine cabling, harbor management, and commercial dive services.
Language: en
Generator: HubSpot
Canonical: https://www.jfbrennan.com

Open Graph

url: https://www.jfbrennan.com
title: J.F. Brennan Company Homepage
description: We are a specialty marine contractor for environmental, dam construction, submarine cabling, harbor management, and commercial dive services.

Technology

CDN: Cloudflare

Analytics

Google Tag Manager

Fonts

Adobe Fonts
Google Fonts

Third-party hosts loaded (7)

www.googletagmanager.com×2
7052064.fs1.hubspotusercontent-na1.net×1
cdnjs.cloudflare.com×1
fonts.googleapis.com×1
maxcdn.bootstrapcdn.com×1
tag.simpli.fi×1
use.typekit.net×1

Contact

Phone

Registration

Registrar

GoDaddy.com, LLC

Created

1997-04-09

Expires

2027-04-10 325 days left

Updated

2024-04-10

Name servers

ns49.domaincontrol.com
ns50.domaincontrol.com

DNS records live

NS

ns49.domaincontrol.com
ns50.domaincontrol.com

MX

10 us-smtp-inbound-1.mimecast.com
10 us-smtp-inbound-2.mimecast.com

TXT

Show 12 TXT records

v=verifydomain MS=ms74518254
MS=ms74518254
autodesk-domain-verification=koHXM-_vxW4Nfm3InO19
apple-domain-verification=kkdkASFMkm2izpCD
400fde42-1575-38d3-e063-0100007f7036
zSrnyZAYEM3WiNraafBNRYVRlxgSIWdC91UVWWVo//kd6wyy4IK0TovQpEiKBy9MXA7xISTmiLkHaY5hQmO3jw==
Rv7OEwVBpPWL7ytE8DGTOZXz6aSnlhj4b9IP5ImePj8ibcj5ZrKXXcdAdssI8y0YU3eKgx6wRzpeMyCVmx/Hog==
MS=ms68753638
v=verifydomain MS=2127347
autodesk-domain-verification=EDJQPsO-f2YQBdelbrr2
include:123881.spf04.hubspotemail.net
lc32herv0kvjijoet5us1t1i5t

Email authentication strong

SPF

v=spf1 a mx include:spf.protection.outlook.com include:panteramail.net include:_netblocks.mimecast.com include:spf.us.exclaimer.net ~all

softfail (~all)

DMARC

v=DMARC1; p=reject; pct=100; rua=mailto:brennanit@jfbrennan.com

policy: reject (enforced)

DKIM

Show 4 DKIM selectors

selector1: v=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCrFFgylMzeav72O5U/t6Qd4GBykS83IFytywa20e5ifwFfgKIquSgGmoLkDHw0WhR4bDKzqupfz+NFVUGYJZ…
s1: k=rsa; t=s; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAoQsoq4XAeyqTIMkA1PffQSDAaSyfzuFFK91ocLTQTEhC36rCn0m5Gqmg3AzsRb3IBqZX6tO+uJP6MlngZ+…
s2: k=rsa; t=s; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDPUMfs9zwGxURfdNr09iEnypKpMZCzWCzOK2mUEVI1sAG+Nh7/3/YAbKSTEfVEbPG+ny085JHNFQRVLLrCk+Wdnk…
smtpapi: k=rsa; t=s; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDPtW5iwpXVPiH5FzJ7Nrl8USzuY9zqqzjE0D1r04xDN6qwziDnmgcFNNfMewVKN2D1O+2J9N14hRprzByFwfQW76…

selectors probed

Certificate (current)

GoDaddy TLS Intermediate CA DV - R1v1

from 2026-03-15 to 2026-09-29

Expires in 132 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 75/100 Checked live page: https://www.jfbrennan.com/

present

strict-transport-security
content-security-policy
referrer-policy

findings

missing frame protection
missing content type protection
missing Permissions Policy

Header values

referrer-policy: no-referrer-when-downgrade
content-security-policy: upgrade-insecure-requests
strict-transport-security: max-age=31536000

Links to (5)

Linked from (2)

brennanopr.com×2
westerndredging.org×2