mozilla/5.0 (x11; linux x86_64; rv:146.0) gecko/20100101 firefox/146.0 (compatible; meta-webindexer/1.1 (+https://developers.facebook.com/docs/sharing/webmasters/crawler))
First seen September 17, 2026 · Last seen October 19, 2026
mozilla/5.0 (x11; linux x86_64; rv:146.0) gecko/20100101 firefox/146.0 (compatible; meta-webindexer/1.1 (+https://developers.facebook.com/docs/sharing/webmasters/crawler))
[[TODO: MAP ONE SENTENCE SUMMARY]]
Category: [[TODO: MAP CATEGORY]]
Avg 1.1 req/min
Seen on 28 systems
383 observed requests
2 exact variants
First seen August 4, 2026
Last seen October 19, 2026
[[TODO: MAP INTRODUCTION PARAGRAPH 1]]
[[TODO: MAP INTRODUCTION PARAGRAPH 2]]
What is mozilla/5.0 (x11; linux x86_64; rv:146.0) gecko/20100101 firefox/146.0 (compatible; meta-webindexer/1.1 (+https://developers.facebook.com/docs/sharing/webmasters/crawler))?
[[TODO: MAP DEFINITION SUMMARY]]
[[TODO: MAP SHORT REFERENCE SUMMARY]]
Analyst summary: [[TODO: MAP ANALYST REPORT SUMMARY]]
User-agent
mozilla/5.0 (x11; linux x86_64; rv:146.0) gecko/20100101 firefox/146.0 (compatible; meta-webindexer/1.1 (+https://developers.facebook.com/docs/sharing/webmasters/crawler))
Observed source IPs
0
Observed requests
383
Source networks
21
Exact variants
2
Latest hit count
142
Latest miss count
5
Latest 404 count
0
Unique paths
6
Related campaigns
[[TODO: MAP RELATED CAMPAIGN COUNT]]
Observed exact user-agent strings
mozilla/5.0 (x11; linux x86_64; rv:147.0) gecko/20100101 firefox/147.0 (compatible; meta-webindexer/1.1 (+https://developers.facebook.com/docs/sharing/webmasters/crawler))
First seen August 4, 2026 · Last seen October 19, 2026
Behavior profile
[[TODO: MAP BEHAVIOR PROFILE INTRO]]
Category
[[TODO: MAP CATEGORY]]
Average request rate
1.1 requests per minute
HTTP and HTTPS support
[[TODO: MAP HTTP HTTPS SUPPORT]]
HTTP version support
[[TODO: MAP PROTOCOL SUPPORT SUMMARY]]
Redirect behavior
[[TODO: MAP REDIRECT BEHAVIOR]]
Robots.txt behavior
[[TODO: MAP ROBOTS TXT BEHAVIOR]]
Crawl-rate behavior
[[TODO: MAP CRAWL RATE BEHAVIOR]]
JavaScript execution
[[TODO: MAP JAVASCRIPT SUPPORT]]
Form submission activity
[[TODO: MAP FORM SUBMISSION ACTIVITY]]
Malformed URL requests
[[TODO: MAP MALFORMED URL BEHAVIOR]]
HTTP/1.0: [[TODO: MAP HTTP 1.0 SUPPORT]]
HTTP/1.1: [[TODO: MAP HTTP 1.1 SUPPORT]]
HTTP/2: [[TODO: MAP HTTP 2 SUPPORT]]
HTTP/3: [[TODO: MAP HTTP 3 SUPPORT]]
[[TODO: MAP HEADER ORDER FINGERPRINTED]]
Source distribution
[[TODO: MAP SOURCE DISTRIBUTION INTRO]]
Top countries
| Country | Networks | Site sightings | Share |
|---|---|---|---|
| Ireland | 17 | 53 | 97.4% |
| United States | 2 | 3 | 1.8% |
| France | 1 | 1 | 0.5% |
| Unknown | 1 | 1 | 0.3% |
Top ASNs
| ASN | Organization | Networks | Share |
|---|---|---|---|
| AS32934 | [[TODO: MAP ASN ORGANIZATION]] | 18 | 99.0% |
| AS16276 | [[TODO: MAP ASN ORGANIZATION]] | 1 | 0.5% |
| AS402674 | [[TODO: MAP ASN ORGANIZATION]] | 1 | 0.3% |
Top datacenters
| Provider | Type | Snapshots | Share |
|---|
Representative source IPs
[[TODO: MAP REPRESENTATIVE IPS INTRO]]
HTTP fingerprint and request characteristics
[[TODO: MAP HTTP FINGERPRINT INTRO]]
Observed header order
[[TODO: MAP HTTP HEADER ORDER SUMMARY]]
Common headers sent
[[TODO: MAP COMMON HEADERS SUMMARY]]
TLS and HTTPS behavior
[[TODO: MAP TLS HTTPS SUMMARY]]
URL normalization behavior
[[TODO: MAP URL NORMALIZATION SUMMARY]]
Malformed request patterns
[[TODO: MAP MALFORMED REQUEST SUMMARY]]
[[TODO: MAP OBSERVED HTTP HEADERS]]
Observed sample requests
[[TODO: MAP SAMPLE REQUESTS INTRO]]
/breeze-airways-cleared-international-flights-targets-europe-caribbean/
/jetblue-halt-nonstop-flights-sacramento-new-york-boston/?amp=1
/page/10/?post_type=tribe_events&eventDisplay=day&eventDate=2022-08-12
/?post_type=tribe_events&eventDisplay=day&paged=10&eventDate=2022-08-12
/[CDATA[https:/autismalliance.ca/initiative-sitemap.xml]]
/fr/le-rapport-dimpact-du-cals2026/
/events/2023-09-15/
/shop/page/3/?add_to_wishlist=10677&_wpnonce=%2A%2A%2A
/shop/page/23/?add_to_wishlist=4689&_wpnonce=%2A%2A%2A&add-to-cart=805
/product-tag/insert-set/page/6/?add_to_wishlist=1479&_wpnonce=%2A%2A%2A&add-to-cart=1717
/product-tag/insert-set/page/6/?add_to_wishlist=1644&_wpnonce=%2A%2A%2A&add-to-cart=1679
/shop/page/19/?add_to_wishlist=1700&_wpnonce=%2A%2A%2A&add-to-cart=1479
Related campaigns and associations
[[TODO: MAP RELATED CAMPAIGNS INTRO]]
[[TODO: MAP RELATED CAMPAIGN NAME]]
Detailed analyst report
[[TODO: MAP ANALYST REPORT PARAGRAPH 1]]
[[TODO: MAP ANALYST REPORT PARAGRAPH 2]]
[[TODO: MAP ANALYST REPORT PARAGRAPH 3]]
Frequently asked questions about mozilla/5.0 (x11; linux x86_64; rv:146.0) gecko/20100101 firefox/146.0 (compatible; meta-webindexer/1.1 (+https://developers.facebook.com/docs/sharing/webmasters/crawler))
What is mozilla/5.0 (x11; linux x86_64; rv:146.0) gecko/20100101 firefox/146.0 (compatible; meta-webindexer/1.1 (+https://developers.facebook.com/docs/sharing/webmasters/crawler))?
[[TODO: MAP FAQ WHAT IS ANSWER]]
Is mozilla/5.0 (x11; linux x86_64; rv:146.0) gecko/20100101 firefox/146.0 (compatible; meta-webindexer/1.1 (+https://developers.facebook.com/docs/sharing/webmasters/crawler)) considered malicious?
[[TODO: MAP FAQ MALICIOUS ANSWER]]
Does mozilla/5.0 (x11; linux x86_64; rv:146.0) gecko/20100101 firefox/146.0 (compatible; meta-webindexer/1.1 (+https://developers.facebook.com/docs/sharing/webmasters/crawler)) respect robots.txt and crawl-rate controls?
[[TODO: MAP FAQ ROBOTS ANSWER]]
What infrastructure is commonly associated with mozilla/5.0 (x11; linux x86_64; rv:146.0) gecko/20100101 firefox/146.0 (compatible; meta-webindexer/1.1 (+https://developers.facebook.com/docs/sharing/webmasters/crawler))?
[[TODO: MAP FAQ INFRASTRUCTURE ANSWER]]