What powers 
petra.ac.id?
Last seen Sep 2026 · 196 technologies across 42 categories
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AI Crawlers
Doesn't mention any of the 33 AI crawlers we track in its robots.txt; all are allowed by default. Checked Oct 2026. A recent check saw a policy file missing; awaiting confirmation.
- robots.txt found
- llms.txt not found
- ai.txt not found
- Sep 2026 robots.txt appeared
- Sep 2026 * added to robots.txt
Top search keywords
| Keyword | Position | Est. monthly visits |
|---|---|---|
| petra | #69 | 210 |
| pcu | #54 | 38 |
| universitas petra surabaya | #1 | 33 |
| universitas petra | #1 | 33 |
| petra christian university | #1 | 25 |
| petra university | #6 | 1 |
| cara perta | #33 | 0 |
| christian media center bahasa indonesia | #69 | 0 |
| tes engineering | #95 | 0 |
| university surabaya | #45 | 0 |
| university of surabaya | #44 | 0 |
| pcu university | #45 | 0 |
| pcu university | #45 | 0 |
| petra news | #24 | 0 |
| petra logo | #16 | 0 |
| petra a c | #13 | 0 |
| petra 2025 | #94 | 0 |
| kec international career | #72 | 0 |
| kec career | #94 | 0 |
| ac id | #59 | 0 |
| dari foods | #67 | 0 |
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
- 54% phone
- 42% desktop
- 4% tablet
Indonesia
Philippines
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
6.52 / 10 · ranked #74,714 of all domains
491 referring domains · OpenPageRank
Search traffic
340 est. monthly organic visits (US)
21 keywords in Google's top 30
Core Web Vitals
| LCP | 2.1 s |
| INP | 75 ms |
| CLS | 0.05 |
| TTFB | 1900 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: English
- Weight: 53.9 MB · 281 requests
- Structured data: OpenGraph
Homepage as crawled by the HTTP Archive, Sep 2026.
Similar sites
unisante.ch 5 shared
- uinkhas.ac.id 8 shared
bno.nl 4 shared
gdi.ch 4 shared
- odoo-community.org 4 shared
openpolis.it 4 shared- uems.eu 4 shared
filmfest-muenchen.de 4 shared
Closest technology stacks among the highest-authority sites we track; "shared" counts the distinctive technologies in common.
Organisation
- Petra Christian University
- Founded: 1961
- Country: Indonesia
From the homepage's own structured data (Sep 2026) and Wikidata (CC0).
Infrastructure
- Registered Mar 1997 (29 years) via PT Digital Registra Indonesia, renews Oct 2033
- Hosted on PETRA-AS-ID PetraNet, Surabaya, Indonesia (203.189.120.54)
- DNS: Cloudflare DNS
- Email: Google Workspace
- Email security: SPF (soft fail), DMARC monitor only
- SSL: Let's Encrypt, RSA 2048, wildcard, expires Nov 2026
- Common Crawl link graph: rank 43,239, 218 hosts
- Verified with: Google
DNS records as swept Oct 2026, certificate as seen Oct 2026, registration from the registry's RDAP service. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| doctoral-civil.petra.ac.id | 34 |
| pgsd.petra.ac.id | 33 |
| ibe.petra.ac.id | 32 |
| arsitektur.petra.ac.id | 31 |
| bdm.petra.ac.id | 31 |
| dsa.petra.ac.id | 31 |
| electrical.petra.ac.id | 31 |
| hotel.petra.ac.id | 31 |
| informatics.petra.ac.id | 31 |
| marketing.petra.ac.id | 31 |
| ppi.petra.ac.id | 31 |
| sib.petra.ac.id | 31 |
| www.fk.petra.ac.id | 31 |
| architecture.petra.ac.id | 30 |
| bacc.petra.ac.id | 30 |
| business.petra.ac.id | 30 |
| fk.petra.ac.id | 30 |
| glsc.petra.ac.id | 30 |
| ibacc.petra.ac.id | 30 |
| industrial.petra.ac.id | 30 |
| magister-arsitektur.petra.ac.id | 30 |
| mm.petra.ac.id | 30 |
| tourism.petra.ac.id | 30 |
| automotive.petra.ac.id | 29 |
Full technology history →
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Recent changes
- dropped Choices Sep 2026
- detected EPrints Jul 2026
- detected Fluent Forms Jul 2026
- detected Perl Jul 2026
- detected Prototype Jul 2026
- dropped Prototype Jun 2026
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- detected The Events Calendar Mar 2026
- detected Closure Library Jan 2026
- detected Next.js App Router Dec 2025
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- dropped Webflow Nov 2025