What powers 
iisg.amsterdam?
Last seen Oct 2026 · 28 technologies across 16 categories
Analytics
CDN
CMS
Ecommerce
Font scripts
JavaScript libraries
Miscellaneous
Operating systems
Programming languages
Search engines
Security
UI frameworks
Web frameworks
Web servers
Webmail
Widgets
AI Crawlers
Doesn't name any of the 33 AI crawlers we track in its robots.txt. Catch-all rules (User-agent: *) restrict some paths for every crawler, AI or not. Checked Nov 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
- Oct 2026 *: Restricted (was Allowed)
- Sep 2026 *: Allowed (was Restricted)
Top search keywords
| Keyword | Position | Est. monthly visits |
|---|---|---|
| iish | #1 | 52 |
| ulbe bosma | #1 | 21 |
| social inequality | #20 | 13 |
| international institute | #66 | 9 |
| hisco | #21 | 8 |
| iisg | #2 | 8 |
| consequences of the spanish flu | #3 | 7 |
| atabaki | #3 | 7 |
| social history | #50 | 5 |
| open archief | #4 | 5 |
| bosma | #23 | 4 |
| slavernij | #6 | 3 |
| how did the spanish flu end | #48 | 3 |
| what is social inequality | #31 | 2 |
| international review of social history | #4 | 2 |
| jenny marx | #12 | 2 |
| mega marx | #6 | 2 |
| when did spanish flu ended | #73 | 1 |
| social inequalities | #15 | 1 |
| karenni logo | #8 | 1 |
| karl marx wife | #40 | 1 |
| liebknecht | #46 | 1 |
| history of amsterdam netherlands | #42 | 1 |
| history of amsterdam | #30 | 1 |
| iisg | #8 | 1 |
The site's top keywords in Google (US), with the visits each one is estimated to bring per month.
Top backlinks
Top links pointing at the site, one per source domain, strongest first. The anchor text opens the page carrying the link.
AI Crawlers
No AI crawlers blocked
Audience
- 64% desktop
- 36% phone
Netherlands
United States
Spain
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
6.40 / 10 · ranked #82,138 of all domains
386 referring domains · OpenPageRank
Search traffic
160 est. monthly organic visits (US)
113 keywords in Google's top 30
Core Web Vitals
| LCP | 1.3 s |
| INP | 100 ms |
| CLS | 0 |
| TTFB | 400 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: Dutch
- Weight: 5.1 MB · 29 requests
- Structured data: OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Oct 2026.
Similar sites
nas.gov.ua 3 shared- aviq.be 3 shared
- anii.org.uy 3 shared
th-ab.de 4 shared- ntis.gov 3 shared
- policiacivil.sp.gov.br 3 shared
geus.dk 3 sharedciop.pl 3 shared
Closest technology stacks among the highest-authority sites we track; "shared" counts the distinctive technologies in common.
Organisation
- International Institute of Social History
- Founded: 1935
- Country: Netherlands
From Wikidata (CC0).
Infrastructure
- Registered Aug 2015 (11 years) via Registrar.eu, renews Aug 2027
- Hosted on SURFNET-NL SURF B.V. (195.169.88.174)
- DNS: socialhistoryservices.org
- Email: Microsoft 365
- Email security: SPF (hard fail), DMARC quarantine
- SSL: HARICA, ECDSA P256, expires Feb 2027
- Common Crawl link graph: rank 439,512, 11 hosts
- Verified with: Google, Microsoft 365
DNS records as swept Nov 2026, certificate as seen Nov 2026, registration from the registry's RDAP service. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| datasets.iisg.amsterdam | 14 |
| iisg.amsterdam | 13 |
| search.iisg.amsterdam | 12 |
| zoeken.iisg.amsterdam | 11 |
| esshc.iisg.amsterdam | 10 |
| delivery.iisg.amsterdam | 6 |
| access.iisg.amsterdam | 4 |