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Expired Science & Research domains on .org with backlinks

Updated Part of Science & Research · .org

This page lists 699 expired Science & Research domains on .org. Each has expired, is available to register, and has referring domains that survived the original site going offline. That is 33% of the 2,059 Science & Research listings and 5% of the 13,428 .org listings in the directory. Across the slice, the median listing here has 10 to 50 referring domains; 521 carry at least one named linking source; 699 had their availability re-checked in the last 30 days; 59 are open, with the name already shown; 12 sit in the top band of 250 or more referring domains. Of the 699 with a recorded registration era, 33% were first registered in 2010 to 2014, the largest band, with registrations running from the 1995 to 1999 band to the 2025 to 2029 band. The most common linking sources are Wikipedia (164), Hacker News (31) and Europa EU (29).

About this list

Narrowing a category to one extension is how a registrar choice or a market focus usually starts: the same topic reads differently on .org than elsewhere, and the extension decides who can register the name.

Every listing is verified the same way as the rest of the directory. Availability is re-checked against the live DNS root over DNS-over-HTTPS, and a listing that turns out to be registered is removed. Referring domains are counted from our own web crawl, not from a paid link index. Site history comes from archived captures: the archived snapshot count and the span of years the site was captured. Revised Score blends link-graph centrality, referring domains and site history into one 0 to 100 grade, computed across the whole directory.

At a glance

Cite as: “Expired Science & Research domains on .org with backlinks”, Revised, https://getrevised.com/market/domains/category/science/tld/org. Last updated 7 November 2026. Updated continuously; free listings and paid plans show names; others masked.

As of 7 November 2026, the Revised directory of expired Science & Research domains on .org with backlinks holds 699 listings, each classified from its archived content. All have expired and are available to register. The median listing has 10 to 50 referring domains, and 12 have 250 or more. Spam-flagged names are filtered out, and 699 (100%) had availability re-checked within 30 days. 521 (74%) carry a link from a tracked university, encyclopedia or news site. Referring domains come from our own web crawl. 59 (8%) are free listings: name and exact counts shown, the rest stay masked except on Starter and Business. Search and filters need no account; masked names stay masked on Free.

Listings
699
Free listings
59 (8%)
Median ref. domains
10 to 50
Named sources
521 (74%)
Re-checked, 30 days
699 (100%)
Last updated
7 Nov 2026

Frequently asked questions

How many expired Science & Research domains on .org are listed?
699 at the last count. Every one has expired, is available to register, and has referring domains counted from our web crawl. The count updates as listings are added and as availability re-checks remove names that were registered.
How are these Science & Research .org listings verified?
Availability is re-checked against the live DNS root over DNS-over-HTTPS, history comes from archived captures, and referring domains are counted from our web crawl. A listing found to be registered is removed. Names are masked on Free; Starter and Business show every name, and metrics are open.
How do I narrow Science & Research .org further?
Use the filters to pivot: change the referring domain band, minimum age or Revised Score, or clear the preset to see the whole directory. Compare listings on site history before choosing one, then register the name at any registrar that offers it.

DR: Domain Rating by Ahrefs

Directory listings. Up and Down move between rows; Enter opens the listing; Right and Left move through the row’s controls.
Actions
laboratoryapparatus.org.orgScience & Research<100Hacker News$4916 yr.org55Open
.orgScience & Research<100–9UC DavisUnder $10011 yr.org65
meroceans.org.orgScience & Research21Wikipedia$4913 yr.org—Open
philosophy-conf.org.orgScience & Research<101Wikipedia$4913 yr.org48Open
proteinidentification.org.orgScience & Research<100Wikipedia$4911 yr.org—Open
icdarwin.org.orgScience & Research<100Wikipedia$4913 yr.org—Open
mythmachine.org.orgScience & Research10Hacker News$4913 yr.org—Open
understandingphysics.org.orgScience & Research10Hacker News$4918 yr.org36Open
erikfromsweden.org.orgScience & Research14Hacker News$4912 yr.org—Open
spinmechatronics.org.orgScience & Research10Wikipedia$4915 yr.org—Open
ist-accord.org.orgScience & Research<1032Wikipedia$4919 yr.org—Open
ser-center.org.orgScience & Research10Wikipedia$4912 yr.org—Open
npa-edu.org.orgScience & Research<100Wikipedia$498 yr.org—Open
scienceisbroken.org.orgScience & Research10Hacker News$4913 yr.org—Open
.orgScience & Research<100–9WikipediaUnder $10011 yr.org69
marsathome.org.orgScience & Research10Hacker News$498 yr.org25Open
isp-society.org.orgScience & Research10Wikipedia$4919 yr.org—Open
datashaper.org.orgScience & Research118Wikipedia$4917 yr.org—Open
isac-esa.org.orgScience & Research13Wikipedia$4921 yr.org50Open
makroeconomica.org.orgScience & Research10Wikipedia$4912 yr.org—Open
mywiset.org.orgScience & Research10Wikipedia$4914 yr.org—Open
.orgScience & Research<100–9WikipediaUnder $10010 yr.org60
center4techpublicpolicy.org.orgScience & Research00Wikipedia$4912 yr.org—Open
.orgScience & Research<100–9National Institutes of HealthNCBIUnder $1006 yr.org86
.orgScience & Research<100–9National Institutes of HealthNCBIUnder $10017 yr.org86
britishexplorersclub.org.orgScience & Research<104Wikipedia$4911 yr.org—Open
.orgScience & Research<100–9Wikimedia FoundationUnder $10020 yr.org65
blabr.org.orgScience & Research14Hacker News$4915 yr.org43Open
.orgScience & Research<100–9University of AdelaideUnder $10010 yr.org64
error-workshop.org.orgScience & Research112Hacker News$494 yr.org59Open
.orgScience & Research<100–9Monash UniversityUnder $10018 yr.org91
.orgScience & Research<100–9WikipediaUnder $10020 yr.org69
.orgScience & Research<100–9Hacker NewsUnder $10013 yr.org60
postdetection.org.orgScience & Research<101Wikipedia$4910 yr.org42Open
.orgScience & Research<1030–49National Institutes of HealthNCBIUnder $10015 yr.org86
polynomial3sat.org.orgScience & Research10Hacker News$498 yr.org—Open
sciencef.org.orgScience & Research10Hacker News$4910 yr.org—Open
plmcn6.org.orgScience & Research10Wikipedia$4920 yr.org—Open
quantumbulletin.org.orgScience & Research10Hacker News$297 yr.org—Open
trprize.org.orgScience & Research<100Hacker News$499 yr.org45Open
.orgScience & Research<100–9National Institutes of HealthNCBIUnder $1009 yr.org86
help-corona.org.orgScience & Research10Hacker News$496 yr.org—Open
phiepsilon.org.orgScience & Research12Hacker News$4925 yr.org—Open
mitchellfoundationmn.org.orgScience & Research00Wikipedia$499 yr.org—Open
651–694 of 694