doi.org - dns.ninja

doi.org

DNSSEC🔒 Signed (DS record present)
A2606:4700:20::681a:484🇺🇸 Cloudflare2606:4700:20::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:20::681a:584🇺🇸 Cloudflare2606:4700:20::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:20::ac43:4503🇺🇸 Cloudflare2606:4700:20::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.26.4.132Cloudflare104.26.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.26.5.132Cloudflare104.26.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.69.3🇺🇸 Cloudflare172.67.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSjosh.ns.cloudflare.com ⭐
A2606:4700:58::adf5:3b7e🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRjosh.ns.cloudflare.com
A2803:f800:50::6ca2:c17e🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRjosh.ns.cloudflare.com
A2a06:98c1:50::ac40:217e🇺🇸 Cloudflare2a06:98c1:50::/45
PTRjosh.ns.cloudflare.com
A108.162.193.126🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRjosh.ns.cloudflare.com
A172.64.33.126🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRjosh.ns.cloudflare.com
A173.245.59.126🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRjosh.ns.cloudflare.com
NSzita.ns.cloudflare.com
A2606:4700:50::adf5:3af3🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRzita.ns.cloudflare.com
A2803:f800:50::6ca2:c0f3🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRzita.ns.cloudflare.com
A2a06:98c1:50::ac40:20f3🇺🇸 Cloudflare2a06:98c1:50::/45
PTRzita.ns.cloudflare.com
A108.162.192.243🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRzita.ns.cloudflare.com
A172.64.32.243🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRzita.ns.cloudflare.com
A173.245.58.243🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRzita.ns.cloudflare.com
MXmx2.zoho.eu ⭐
A185.230.214.166🇳🇱 ZOHO-EU185.230.214.0/23
PTRmx2.zoho.eu
PTRmx3.zoho.eu
PTRmx.zoho.eu
MXmx3.zoho.eu(20)
A185.230.212.166🇳🇱 ZOHO-EU185.230.212.0/23
PTRmx2.zoho.eu
PTRmx3.zoho.eu
PTRmx.zoho.eu
MXmx.zoho.eu(50)
A185.20.209.166🇨🇭 COMPUTERLINE185.20.209.0/24
PTRmx2.zoho.eu
PTRmx3.zoho.eu
PTRmx.zoho.eu
A185.230.214.166🇳🇱 ZOHO-EU185.230.214.0/23
PTRmx2.zoho.eu
PTRmx3.zoho.eu
PTRmx.zoho.eu
TXTv=spf1 include:zohomail.eu include:cnri.net include:amazonses.com ~all
TXTzoho-verification=zb37490279.zmverify.zoho.eu
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.26.4.132, 104.26.5.132, 172.67.69.3
IPv6 hints2606:4700:20::681a:484, 2606:4700:20::681a:584, 2606:4700:20::ac43:4503
SOAjosh.ns.cloudflare.comdns@cloudflare.com serial=2411195165

org

DNSSEC🔒 Signed (DS record present)
NSa0.org.afilias-nst.info ⭐ ⚠️ Not in parent delegation
NSa2.org.afilias-nst.info ⚠️ Not in parent delegation
NSb0.org.afilias-nst.org
NSb2.org.afilias-nst.org
NSc0.org.afilias-nst.info ⚠️ Not in parent delegation
NSd0.org.afilias-nst.org
SOAa0.org.afilias-nst.infohostmaster@donuts.email serial=1786006860
rank #71 globally
rank #10 in the tld

doi.org

The domain used to resolve Digital Object Identifiers (DOIs) — a persistent identifier system for uniquely referencing academic papers, datasets, standards, and other digital objects. When a DOI like10.1000/182is placed afterhttps://doi.org/, the resolver redirects the browser to the object's current, real-world location.

Key facts

  • Owner / operator: International DOI Foundation (IDF), with resolution infrastructure managed via the Corporation for National Research Initiatives (CNRI) Handle System
  • TLD:.org— gTLD
  • Primary purpose: persistent identifier resolution/redirection service for scholarly and other digital content
  • Status: active

History

YearEvent
2000International DOI Foundation founded to govern the DOI system
2000sdoi.orgestablished as the public resolver domain for DOI lookups
2012ISO 26324 standard formalizes the DOI system

Notable subdomains or services

  • doi.org//— the standard resolution URL pattern for any registered DOI (e.g.doi.org/10.(0x787878)x/(0x787878)xx)
  • www.doi.org— informational site about the DOI system and IDF

Related domains

  • crossref.org— major DOI registration agency for scholarly publishing
  • datacite.org— DOI registration agency focused on research data
  • handle.net— underlying Handle System infrastructure that DOI relies on
🔒 HSTS Preload (+subdomains)
Semrush Rank:#47,261 Keywords:76,183 Traffic:43,348/mo
📈 Tranco rank: #205
doi.org - Tranco Rank (30d: ↑+6)201202204206208209Jun 28Jul 7Jul 16Jul 25Aug 3Aug 4Rank#208#202

DOI Foundation - Digital Object Identifier System

DOI.org is operated by the DOI Foundation, a not-for-profit organization that governs the Digital Object Identifier (DOI) system. A DOI is a persistent digital identifier for any object—physical, digital, or abstract—that remains stable even when the object's location changes. The infrastructure is maintained by the Corporation for National Research Initiatives (CNRI).

The DOI system serves registration agencies across multiple sectors including scholarly communications, research data, entertainment, standards bodies, and cultural heritage. When formatted as links (e.g.,https://doi.org/10.(0x787878)xx), DOIs redirect to current information about identified objects through the proxy resolver. In December 2025, the system reached 3 billion proxy resolutions, handling approximately 1,146 resolutions per second.

Technical Infrastructure

  • Hosting: Cloudflare (AS13335)
  • IPv4: 104.26.4.132, 104.26.5.132, 172.67.69.3
  • IPv6: 2606:4700:20::681a:484, 2606:4700:20::681a:584, 2606:4700:20::ac43:4503
  • Nameservers: josh.ns.cloudflare.com, zita.ns.cloudflare.com
  • Mail: Zoho EU (mx.zoho.eu, mx2.zoho.eu, mx3.zoho.eu)
  • DNSSEC: Enabled
  • Standards: ISO 26324

Rankings

  • Tranco: #233 globally, #11 within .org TLD

Subdomains

citation.doi.org
www.doi.org
dx.doi.org

Same first word

doi.biz
doi.vic.gov.au
doi.be
doi.info
doi.com
doi.no
doi.to
doi.cards
doi.im
doi.works
doi.cz
doi.at
doi.mobi
doi.co.il
doi.hk
doi.care
doi.ai
doi.gov
doi.ge
doi.ro
doi.co
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doi.co.uk
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doi.se
doi.su
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doi.co.jp
doi.ch
doi.fi
doi.pl
doi.istanbul
doi.website
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doi.mx
doi.us
doi.dk
doi.or.id
doi.kr
doi.in
doi.net
doi.wiki
doi.gov.bt
doi.io
doi.me
doi.one
doi.or.kr
doi.edgekey.net
doi.cl
doi.azure-api.net
doi.space
doi.jp
doi.site
doi.org
doi.ca
doi.nl
doi.eu

Similar names

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odi.su
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odi.vn
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odi.pl
dio.bz
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iod.info
dio.com.co

DNS History

53 records (11 active, 42 former)

20162017201820192020202120222023202420252026NSjosh.ns.cloudflare.comzita.ns.cloudflare.comauth1.dns.cogentco.comauth2.dns.cogentco.comauth40.ns.uu.netauth62.ns.uu.netauthns1.qwest.netauthns2.qwest.netaws-dns1.doi.orgaws-dns2.doi.orgaws-dns3.doi.orgawsdns1.doi.orgawsdns2.doi.orgawsdns3.doi.orgns.cnri.reston.va.usns.handle.netns3.cnri.usMXmx.zoho.eumx2.zoho.eumx3.zoho.eubugsmasher.cnri.reston.va.usbumblebee.cnri.reston.va.uscnri-mx-vm.cnri.reston.va.uscnri-mx.cnri.reston.va.usmx2.cnri.reston.va.usA104.26.4.132104.26.5.132172.67.69.32606:4700:20::681a:4842606:4700:20::681a:5842606:4700:20::ac43:4503104.26.8.237104.26.9.237162.13.3.127172.67.72.1472001:550:100:6::138:1622001:550:100:6::138:163208.254.38.902600:1f14:6cf:c01::d2600:1f18:6165:d303::d2606:4700:20::681a:8ed2606:4700:20::681a:9ed2606:4700:20::ac43:48932a00:1a48:7805:112:2c13:65be:ff08:2e892a00:1a48:7805:113:be76:4eff:fe09:2bc42a05:d014:446:f01::d34.206.159.20938.100.138.16238.100.138.16352.59.172.3854.191.229.23563.123.152.24895.138.171.129
○NSauth1.dns.cogentco.com2015-08-21 → 2018-01-04 · 4 obs
● 2015-08-21 09:59:42
● 2018-01-04 07:49:20
○ 2019-12-20 20:41:00
○ 2026-08-06 09:35:10
○NSauth2.dns.cogentco.com2015-08-21 → 2018-01-04 · 4 obs
● 2015-08-21 09:59:42
● 2018-01-04 07:49:20
○ 2019-12-20 20:41:00
○ 2026-08-06 09:35:10
○NSauth40.ns.uu.net2015-08-21 → 2018-01-04 · 4 obs
● 2015-08-21 09:59:42
● 2018-01-04 07:49:20
○ 2019-12-20 20:41:00
○ 2026-08-06 09:35:10
○NSauth62.ns.uu.net2015-08-21 → 2018-01-04 · 4 obs
● 2015-08-21 09:59:42
● 2018-01-04 07:49:20
○ 2019-12-20 20:41:00
○ 2026-08-06 09:35:10
○NSauthns1.qwest.net2015-08-21 → 2018-01-04 · 4 obs
● 2015-08-21 09:59:42
● 2018-01-04 07:49:20
○ 2019-12-20 20:41:00
○ 2026-08-06 09:35:10
○NSauthns2.qwest.net2015-08-21 → 2018-01-04 · 4 obs
● 2015-08-21 09:59:42
● 2018-01-04 07:49:20
○ 2019-12-20 20:41:00
○ 2026-08-06 09:35:10
○NSaws-dns1.doi.org2017-05-16 → 2018-01-04 · 8 obs
○ 2015-08-21 09:59:42
● 2017-05-16 07:33:26
● 2017-07-06 14:25:28
○ 2017-07-26 19:56:46
● 2017-10-26 23:06:30
● 2018-01-04 07:49:20
○ 2019-12-20 20:41:00
○ 2026-08-06 09:35:10
○NSaws-dns2.doi.org2017-05-16 → 2018-01-04 · 8 obs
○ 2015-08-21 09:59:42
● 2017-05-16 07:33:26
● 2017-07-06 14:25:28
○ 2017-07-26 19:56:46
● 2017-10-26 23:06:30
● 2018-01-04 07:49:20
○ 2019-12-20 20:41:00
○ 2026-08-06 09:35:10
○NSaws-dns3.doi.org2017-05-16 → 2018-01-04 · 8 obs
○ 2015-08-21 09:59:42
● 2017-05-16 07:33:26
● 2017-07-06 14:25:28
○ 2017-07-26 19:56:46
● 2017-10-26 23:06:30
● 2018-01-04 07:49:20
○ 2019-12-20 20:41:00
○ 2026-08-06 09:35:10
○NSawsdns1.doi.org2017-07-26 → 2017-07-26 · 4 obs
○ 2017-07-06 14:25:28
● 2017-07-26 19:56:46
○ 2017-10-26 23:06:30
○ 2026-08-06 09:35:10
○NSawsdns2.doi.org2017-07-26 → 2017-07-26 · 4 obs
○ 2017-07-06 14:25:28
● 2017-07-26 19:56:46
○ 2017-10-26 23:06:30
○ 2026-08-06 09:35:10
○NSawsdns3.doi.org2017-07-26 → 2017-07-26 · 4 obs
○ 2017-07-06 14:25:28
● 2017-07-26 19:56:46
○ 2017-10-26 23:06:30
○ 2026-08-06 09:35:10
●NSjosh.ns.cloudflare.com2019-12-20 → 2026-08-06 · 3 obs
○ 2018-01-04 07:49:20
● 2019-12-20 20:41:00
● 2026-08-06 09:35:10
○NSns.cnri.reston.va.us2015-08-21 → 2018-01-04 · 4 obs
● 2015-08-21 09:59:42
● 2018-01-04 07:49:20
○ 2019-12-20 20:41:00
○ 2026-08-06 09:35:10
○NSns.handle.net2015-08-21 → 2018-01-04 · 4 obs
● 2015-08-21 09:59:42
● 2018-01-04 07:49:20
○ 2019-12-20 20:41:00
○ 2026-08-06 09:35:10
○NSns3.cnri.us2015-08-21 → 2018-01-04 · 4 obs
● 2015-08-21 09:59:42
● 2018-01-04 07:49:20
○ 2019-12-20 20:41:00
○ 2026-08-06 09:35:10
●NSzita.ns.cloudflare.com2019-12-20 → 2026-08-06 · 3 obs
○ 2018-01-04 07:49:20
● 2019-12-20 20:41:00
● 2026-08-06 09:35:10
○MXbugsmasher.cnri.reston.va.us2017-05-16 → 2022-01-30 · 5 obs
○ 2017-03-16 09:08:30
● 2017-05-16 07:33:26
● 2022-01-30 10:44:58
○ 2026-02-14 17:31:50
○ 2026-08-06 09:35:10
○MXbumblebee.cnri.reston.va.us2019-12-20 → 2022-01-30 · 5 obs
○ 2018-01-04 07:49:20
● 2019-12-20 20:41:00
● 2022-01-30 10:44:58
○ 2026-02-14 17:31:50
○ 2026-08-06 09:35:10
○MXcnri-mx-vm.cnri.reston.va.us2015-08-21 → 2017-03-16 · 4 obs
● 2015-08-21 09:59:42
● 2017-03-16 09:08:30
○ 2017-05-16 07:33:26
○ 2026-08-06 09:35:10
○MXcnri-mx.cnri.reston.va.us2015-08-21 → 2018-01-04 · 4 obs
● 2015-08-21 09:59:42
● 2018-01-04 07:49:20
○ 2019-12-20 20:41:00
○ 2026-08-06 09:35:10
●MXmx.zoho.eu2026-02-14 → 2026-08-06 · 3 obs
○ 2022-01-30 10:44:58
● 2026-02-14 17:31:50
● 2026-08-06 09:35:10
○MXmx2.cnri.reston.va.us2015-08-21 → 2018-01-04 · 4 obs
● 2015-08-21 09:59:42
● 2018-01-04 07:49:20
○ 2019-12-20 20:41:00
○ 2026-08-06 09:35:10
●MXmx2.zoho.eu2026-02-14 → 2026-08-06 · 3 obs
○ 2022-01-30 10:44:58
● 2026-02-14 17:31:50
● 2026-08-06 09:35:10
●MXmx3.zoho.eu2026-02-14 → 2026-08-06 · 3 obs
○ 2022-01-30 10:44:58
● 2026-02-14 17:31:50
● 2026-08-06 09:35:10
●A104.26.4.1322026-02-14 → 2026-08-06 · 3 obs
○ 2022-01-30 10:44:58
● 2026-02-14 17:31:50
● 2026-08-06 09:35:10
●A104.26.5.1322026-02-14 → 2026-08-06 · 3 obs
○ 2022-01-30 10:44:58
● 2026-02-14 17:31:50
● 2026-08-06 09:35:10
○A104.26.8.2372019-12-20 → 2022-01-30 · 5 obs
○ 2018-01-04 07:49:20
● 2019-12-20 20:41:00
● 2022-01-30 10:44:58
○ 2026-02-14 17:31:50
○ 2026-08-06 09:35:10
○A104.26.9.2372019-12-20 → 2022-01-30 · 5 obs
○ 2018-01-04 07:49:20
● 2019-12-20 20:41:00
● 2022-01-30 10:44:58
○ 2026-02-14 17:31:50
○ 2026-08-06 09:35:10
○A162.13.3.1272015-08-21 → 2016-06-07 · 4 obs
● 2015-08-21 09:59:42
● 2016-06-07 14:51:04
○ 2016-06-21 20:51:14
○ 2026-08-06 09:35:10
●A172.67.69.32026-02-14 → 2026-08-06 · 3 obs
○ 2022-01-30 10:44:58
● 2026-02-14 17:31:50
● 2026-08-06 09:35:10
○A172.67.72.1472020-07-31 → 2022-01-30 · 5 obs
○ 2019-12-20 20:41:00
● 2020-07-31 00:26:08
● 2022-01-30 10:44:58
○ 2026-02-14 17:31:50
○ 2026-08-06 09:35:10
○A2001:550:100:6::138:1622015-08-21 → 2017-03-16 · 4 obs
● 2015-08-21 09:59:42
● 2017-03-16 09:08:30
○ 2017-05-16 07:33:26
○ 2026-08-06 09:35:10
○A2001:550:100:6::138:1632015-08-21 → 2017-03-16 · 4 obs
● 2015-08-21 09:59:42
● 2017-03-16 09:08:30
○ 2017-05-16 07:33:26
○ 2026-08-06 09:35:10
○A208.254.38.902015-08-21 → 2018-01-04 · 4 obs
● 2015-08-21 09:59:42
● 2018-01-04 07:49:20
○ 2019-12-20 20:41:00
○ 2026-08-06 09:35:10
○A2600:1f14:6cf:c01::d2017-05-16 → 2018-01-04 · 5 obs
○ 2017-03-16 09:08:30
● 2017-05-16 07:33:26
● 2018-01-04 07:49:20
○ 2019-12-20 20:41:00
○ 2026-08-06 09:35:10
○A2600:1f18:6165:d303::d2017-05-16 → 2018-01-04 · 5 obs
○ 2017-03-16 09:08:30
● 2017-05-16 07:33:26
● 2018-01-04 07:49:20
○ 2019-12-20 20:41:00
○ 2026-08-06 09:35:10
●A2606:4700:20::681a:4842026-02-14 → 2026-08-06 · 3 obs
○ 2022-01-30 10:44:58
● 2026-02-14 17:31:50
● 2026-08-06 09:35:10
●A2606:4700:20::681a:5842026-02-14 → 2026-08-06 · 3 obs
○ 2022-01-30 10:44:58
● 2026-02-14 17:31:50
● 2026-08-06 09:35:10
○A2606:4700:20::681a:8ed2019-12-20 → 2022-01-30 · 5 obs
○ 2018-01-04 07:49:20
● 2019-12-20 20:41:00
● 2022-01-30 10:44:58
○ 2026-02-14 17:31:50
○ 2026-08-06 09:35:10
○A2606:4700:20::681a:9ed2019-12-20 → 2022-01-30 · 5 obs
○ 2018-01-04 07:49:20
● 2019-12-20 20:41:00
● 2022-01-30 10:44:58
○ 2026-02-14 17:31:50
○ 2026-08-06 09:35:10
●A2606:4700:20::ac43:45032026-02-14 → 2026-08-06 · 3 obs
○ 2022-01-30 10:44:58
● 2026-02-14 17:31:50
● 2026-08-06 09:35:10
○A2606:4700:20::ac43:48932020-07-31 → 2022-01-30 · 5 obs
○ 2019-12-20 20:41:00
● 2020-07-31 00:26:08
● 2022-01-30 10:44:58
○ 2026-02-14 17:31:50
○ 2026-08-06 09:35:10
○A2a00:1a48:7805:112:2c13:65be:ff08:2e892015-08-21 → 2016-06-07 · 4 obs
● 2015-08-21 09:59:42
● 2016-06-07 14:51:04
○ 2016-06-21 20:51:14
○ 2026-08-06 09:35:10
○A2a00:1a48:7805:113:be76:4eff:fe09:2bc42016-06-21 → 2018-01-04 · 5 obs
○ 2016-06-07 14:51:04
● 2016-06-21 20:51:14
● 2018-01-04 07:49:20
○ 2019-12-20 20:41:00
○ 2026-08-06 09:35:10
○A2a05:d014:446:f01::d2017-05-16 → 2018-01-04 · 5 obs
○ 2017-03-16 09:08:30
● 2017-05-16 07:33:26
● 2018-01-04 07:49:20
○ 2019-12-20 20:41:00
○ 2026-08-06 09:35:10
○A34.206.159.2092017-05-16 → 2018-01-04 · 5 obs
○ 2017-03-16 09:08:30
● 2017-05-16 07:33:26
● 2018-01-04 07:49:20
○ 2019-12-20 20:41:00
○ 2026-08-06 09:35:10
○A38.100.138.1622015-08-21 → 2017-03-16 · 4 obs
● 2015-08-21 09:59:42
● 2017-03-16 09:08:30
○ 2017-05-16 07:33:26
○ 2026-08-06 09:35:10
○A38.100.138.1632015-08-21 → 2017-03-16 · 4 obs
● 2015-08-21 09:59:42
● 2017-03-16 09:08:30
○ 2017-05-16 07:33:26
○ 2026-08-06 09:35:10
○A52.59.172.382017-05-16 → 2018-01-04 · 5 obs
○ 2017-03-16 09:08:30
● 2017-05-16 07:33:26
● 2018-01-04 07:49:20
○ 2019-12-20 20:41:00
○ 2026-08-06 09:35:10
○A54.191.229.2352015-08-21 → 2018-01-04 · 4 obs
● 2015-08-21 09:59:42
● 2018-01-04 07:49:20
○ 2019-12-20 20:41:00
○ 2026-08-06 09:35:10
○A63.123.152.2482015-08-21 → 2018-01-04 · 4 obs
● 2015-08-21 09:59:42
● 2018-01-04 07:49:20
○ 2019-12-20 20:41:00
○ 2026-08-06 09:35:10
○A95.138.171.1292016-06-21 → 2018-01-04 · 5 obs
○ 2016-06-07 14:51:04
● 2016-06-21 20:51:14
● 2018-01-04 07:49:20
○ 2019-12-20 20:41:00
○ 2026-08-06 09:35:10

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
orgb2.org.afilias-nst.org, d0.org.afilias-nst.org, b0.org.afilias-nst.org-
doi.orgjosh.ns.cloudflare.com, zita.ns.cloudflare.com-

✅ Authoritative Response

Server:172.64.33.126

NS records: josh.ns.cloudflare.com, zita.ns.cloudflare.com

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 637ms | Queries: -

📄 Records

TypeCountSample Data
A3104.26.4.132, 172.67.69.3...
AAAA32606:4700:20::681a:484, 2606:4700:20::ac43:4503...
NS2josh.ns.cloudflare.com, zita.ns.cloudflare.com
MX3mx.zoho.eu (pri: 10), mx2.zoho.eu (pri: 20)...
TXT2v=spf1 include:zohomail.eu include:cnri., zoho-verification=zb37490279.zmverify.zo
HTTPS1{"priority":1,"target":".","alpn":["h3",
SOA1josh.ns.cloudflare.com dns.cloudflare.co

Related

⚔️ Similar Servicescrossref.org

Analysis

Hierarchy

citation.doi.org, www.doi.org and dx.doi.org each fall under the parent domain doi.org.

IP Addresses

With 6 IP addresses in total, doi.org resolves to 104.26.4.132, 104.26.5.132, 172.67.69.3 and 3 other.

Among the host names that share IP numbers with doi.org are www.eventworld.co, michaelaffronti.com, getdelta.io and two others.

Name Servers

doi.org is served by two delegated name servers, josh.ns.cloudflare.com and zita.ns.cloudflare.com.

doi.org has the same name server delegation as a number of other domains, such as ipohecho.com.my, shortdoi.org, holstarc.com and two more.

doi.org partially shares its NS delegation with several other domains, including redhasavyurt.ru, 37550.casino, tiger-sheep.com and two others.

Host names resolving to 6 IP numbers:

josh.ns.cloudflare.com carries IP addresses 108.162.193.126, 172.64.33.126 and 173.245.59.126, with 3 other addresses beyond those.

zita.ns.cloudflare.com carries IP addresses 108.162.192.243, 172.64.32.243 and 173.245.58.243, with 3 other addresses beyond those.

Mail Servers

doi.org uses three mail servers — mx2.zoho.eu, mx3.zoho.eu and mx.zoho.eu.

doi.org shares at least some of its mail servers with other domains — for example 44brekkie.com, centresalesgloves.co.uk, curecancer.eu and two more.

Hosts with two IP numbers each:

mx.zoho.eu maps to two IP addresses — 185.20.209.166 and 185.230.214.166.

Hosts that resolve to one IP address:

mx2.zoho.eu points to the IP address 185.230.214.166.

mx3.zoho.eu points to the IP address 185.230.212.166.

These two host names — mx.zoho.eu and mx2.zoho.eu — each point to 185.230.214.166 IP addresses.