sincere.com

.com crawl

First seen 2026-04-20 · Last seen 2026-05-17 · ok HTTP/1.1 200 1111 ms crawled 2026-05-14

US · 76.76.21.21 · AS16509 Amazon.com, Inc.

Reputation 94/100 dmarc monitor-only

Classifying

HTML metadata

Title: Sincere Corporation: A Family of Brands with Heart
Description: We build technology that brings you closer and helps show you care to the people who matter the most. Sincere is home to Punchbowl, Lovebird, Timehop, and Memento.
Language: en

Open Graph

url: https://www.sincere.com/
title: Sincere Corporation: A Family of Brands with Heart
locale: en_US
site name: Sincere Corporation
description: We build technology that brings you closer and helps show you care to the people who matter the most. Sincere is home to Punchbowl, Lovebird, Timehop, and Memento.

Technology

CDN: Vercel
CMS: Next.js

Social

Contact

Email

info@sincere.com

Registration

Registrar

GoDaddy.com, LLC

Created

1997-06-08

Expires

2034-06-07 2940 days left

Updated

2024-08-30

Name servers

ns-1153.awsdns-16.org
ns-1983.awsdns-55.co.uk
ns-789.awsdns-34.net
ns-86.awsdns-10.com

DNS records live

NS

ns-1153.awsdns-16.org
ns-1983.awsdns-55.co.uk
ns-789.awsdns-34.net
ns-86.awsdns-10.com

MX

1 aspmx.l.google.com
10 alt3.aspmx.l.google.com
10 alt4.aspmx.l.google.com
5 alt1.aspmx.l.google.com
5 alt2.aspmx.l.google.com

TXT

google-site-verification=NrkoUkCYdOZRNzfBrO0SsatWKgXQJpSUTpL48iIipRE
google-site-verification=bN_A3UhjAgycs67TSTG3Od1J5J6T19QYCXbmxfICUQk
apple-domain-verification=xvF8szsJ35z2HX6W

Email authentication partial

SPF

v=spf1 include:_spf.google.com ~all

softfail (~all)

DMARC

v=DMARC1; p=none;rua=mailto:abuse@sincere.com; ruf=mailto:abuse@sincere.com; pct=100

policy: none (monitoring only)

DKIM

google: v=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCYmIpLXwyghHOp4z1/i8ZoZKkMmx0IziWpx3oy2Z8iqc4vEbYhZS1hn3tYolmGaULzpJxDAdA5J08Dz4WAMA…
s1: k=rsa; t=s; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAucgHjxwE9trCQenwogh4nDd2ZhmOif5LrKH25OX4cNS1ybMTEb9888LNpU7B5ueSj+4Mp9510skeXkvI9a…
s2: k=rsa; t=s; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAyNFSJEpzg27IptaIBAYamesN5oHmUeNbADFYBskT8k84dffT4f6aNtOBV1WhZFZeWUUgRqw95UqwrpZveR…

selectors probed

Certificate (current)

R13

from 2026-04-01 to 2026-06-30

Expires in 41 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 50/100 Checked live page: https://www.sincere.com/

present

strict-transport-security

findings

missing Content Security Policy
missing frame protection
missing content type protection
missing Referrer Policy
missing Permissions Policy

Header values

strict-transport-security: max-age=63072000