harpercollins.com
HarperCollins Publishers: World-Leading Book Publisher
harpercollins.com is registered with MarkMonitor Inc. since April 13, 1994 (32.6 years). The registration expires on April 14, 2027. The site runs on Vue.js, Shopify, VWO and 17 other technologies. Its email security grade is B. Its SSL certificate is issued by DigiCert Inc and is valid for 27 more days.
- Domain age
- 32.6 yrs
- Technologies
- 20
- Email security
- B
- SSL days left
- 27
Registration
| Registrar | MarkMonitor Inc. |
|---|---|
| IANA ID | 292 |
| Registered | April 13, 1994 |
| Expires | April 14, 2027 |
| Updated | March 13, 2026 |
| Status | client delete prohibited, client transfer prohibited, client update prohibited |
| Name servers | dbru.br.ns.els-gms.att.net, dmtu.mt.ns.els-gms.att.net |
| DNSSEC | Not signed |
DNS records
| Type | Value | TTL |
|---|---|---|
| A | 23.227.38.65 | 300 |
| MX | mxa-00596a01.gslb.pphosted.com 5 | 3600 |
| MX | mxb-00596a01.gslb.pphosted.com 5 | 3600 |
| NS | dmtu.mt.ns.els-gms.att.net | 21600 |
| NS | dbru.br.ns.els-gms.att.net | 21600 |
| TXT | ZOOM_verify_c8YbePuKRTOlYTGf_XKe2Q | 21600 |
| TXT | ca3-55817d6452e54bb686ad84dded8965e2 | 21600 |
| TXT | asv=6bcb95b6501de3efbcb4bba9870aa071 | 21600 |
| TXT | docker-verification=dfcc680b-f409-45d1-b9a7-7992e21b9a52 | 21600 |
| TXT | v=spf1 include:%{ir}.%{v}.%{d}.spf.has.pphosted.com ~all | 21600 |
| TXT | google-site-verification=mrNi0RTTBHQ_NPHcDoUYnii2GYVeN8gg0XIYRMJmoU0 | 21600 |
| TXT | google-site-verification=nmk1hXTEYrIjhNQa3heeK1KiHKtzpXxB1jDCZP7e8o0 | 21600 |
| TXT | ValidationTokenValue=90fe4eb0-f1cb-4e32-a847-dc0e99fd6213 | 21600 |
| TXT | docusign=725b7e74-15db-4d54-ac76-889b6f206549 | 21600 |
| TXT | figma-domain-verification=950abdf37a7ff2b00c3954b0b7c5b529439c5bc172d9955316215e3348f14054-1720572824 | 21600 |
| TXT | yahoo-verification-key=i+M9oi9b5+XYPU48wdxWhYtTSJpnVouSnI3IUqZq88I= | 21600 |
| TXT | extensis-domain-verification=fb808a86-2bd8-4609-b6da-ee938a0b5625 | 21600 |
Technology stack
SSL certificate
| Valid | Valid |
|---|---|
| Issuer | US, GeoTrust TLS RSA CA G1, DigiCert Inc |
| Expires | December 7, 2026 |
| Days remaining | 27 |
| Protocol | TLSv1.3 |
| Names | harpercollins.com, www.harpercollins.com |
Email security
- warnNo MTA-STS: mail sent to you can be downgraded to an unencrypted connection.
- warnNo TLS-RPT record, so you won't hear about failed encrypted deliveries.
- warnNo BIMI record (optional: shows your logo next to your emails in supporting inboxes).
- goodSPF record found.
- goodSPF ends with ~all: servers you have not listed are marked as suspicious (soft fail).
- goodDMARC policy is reject: mail that fails authentication is blocked.
- goodDMARC aggregate reports are sent to mailto:[email protected].
- goodDKIM keys found (selector: google, selector2, k2, s1, s2).
- good2 MX record(s) found. Mail is handled by Proofpoint.
Homepage metadata
| Title | HarperCollins Publishers: World-Leading Book Publisher |
|---|---|
| Description | Publishing great authors since 1817. Discover thousands of books and authors, plus get exclusives on new releases, bestsellers, and more, at harpercollins.com. |
| Language | en |
| Canonical | https://www.harpercollins.com/ |
| Structured data | Organization, WebSite |
| Indexable | Yes |
| Word count | 1702 |
About harpercollins.com
Who is the registrar of harpercollins.com?
harpercollins.com is registered with MarkMonitor Inc. (IANA ID 292).
When does harpercollins.com expire?
The current registration of harpercollins.com expires on April 14, 2027. It was first registered on April 13, 1994.
What technology does harpercollins.com use?
We detected 20 technologies on harpercollins.com, including VWO, Cloudflare Web Analytics, Auth0, cdnjs, Cloudflare, Shopify.
Does harpercollins.com protect its email with SPF and DMARC?
harpercollins.com scores 83/100 (grade B) for email security. No MTA-STS: mail sent to you can be downgraded to an unencrypted connection. No TLS-RPT record, so you won't hear about failed encrypted deliveries.
What are the name servers of harpercollins.com?
harpercollins.com uses dmtu.mt.ns.els-gms.att.net, dbru.br.ns.els-gms.att.net.