Block adult subscription sites. Including the ones you've not heard of.
Adult subscription platforms are a different problem from traditional adult sites: they're linked from mainstream social media, they're marketed by creators your child may already follow, and there are dozens of them.
Why a manual block list fails here
Parents typically block onlyfans.com and stop. That leaves:
- A long tail of competitors — Fansly, JustForFans, and many more, with new ones appearing regularly.
- Link-in-bio services. Creators route traffic through Linktree-style pages, so the adult domain never appears in the link your child taps.
- Aggregator and leak sites that republish paid content free — these are numerous, short-lived, and heavily malware-laden.
- Social media as the funnel. Discovery happens on X, Reddit, and TikTok, not through search.
This is why category-based filtering matters more than a domain list. A maintained adult-content category covers the platforms, the mirrors, and the aggregators as they appear.
Device-level blocking
iPhone and iPad
- Screen Time → Content & Privacy Restrictions → Content Restrictions → Web Content.
- Select Limit Adult Websites.
- Add specific domains under Never Allow.
- Set a Screen Time passcode.
Apple's filter catches the largest platforms and misses aggregators and newer domains routinely.
Android
Family Link's Chrome filtering is similarly heuristic and Chrome-only. Defenras applies at the DNS layer, so every browser and in-app browser is covered by the same category block.
Router
Worth doing as a floor for consoles and TVs, but remember it doesn't apply on cellular data — which is where most of this browsing happens.
A maintained adult blocklist, not a manual one
Defenras blocks adult subscription platforms and their mirrors by category — updated continuously, no list for you to keep.
Get Defenras free →Closing the routes around it
- VPN apps. The most common bypass. Block VPN app installation and VPN provider domains.
- DNS-over-HTTPS. A browser can encrypt DNS to its own resolver and skip your filter. On-device filtering that operates at the system level handles this; router-only filtering doesn't.
- In-app browsers. A link tapped inside X or Reddit opens in that app's browser, which may not honour Safari-level restrictions.
- The social funnel. If discovery happens on X or Reddit, restricting those platforms addresses the referral path rather than the destination.
Filtering handles accidental exposure and casual curiosity, and it handles them well. It doesn't handle a determined 16-year-old with a phone, and pretending otherwise sets you up to be surprised.
What research on this consistently finds is that the strongest protective factor isn't the filter — it's whether a teenager has had a frank, non-punitive conversation about what they're likely to encounter, why it's an unrealistic depiction of sex, and that they won't be humiliated for asking about it. Filter and talk. The filter buys you time; the conversation is what they carry.
If you find it in the history
A few things that help, from parents who've been through it:
- Don't lead with punishment. Curiosity about sex is normal and near-universal at this age. A punitive response teaches concealment, not restraint.
- Separate the behaviour from the risk. The immediate concerns are usually financial (subscription charges), security (aggregator sites are riddled with malware), and legal — and that last one is worth being explicit about.
- Be specific about images. Any sexual image of a person under 18 is illegal to possess or share in most jurisdictions, including images of themselves and including images sent to them. Teenagers are frequently unaware of this and it's the thing most worth them knowing.
- Then tighten the filter — after the conversation, not instead of it.
Frequently asked questions
Does OnlyFans verify the age of viewers?
Subscribing requires a payment method, which is a weak proxy at best. Free preview content and third-party aggregator sites have no meaningful check at all.
Can I block adult sites without blocking everything else?
Yes — category filtering blocks adult content specifically while leaving the rest of the web alone. That's the standard configuration.
What about leak and aggregator sites?
These are numerous, short-lived, and among the most malware-heavy sites on the web. A maintained category blocklist handles them; a manual domain list can't keep pace.
Will a VPN get around this?
A VPN defeats router filtering entirely. On-device filtering can block VPN apps and provider domains, which is why blocking VPN installation is part of the setup.
Defenras blocks all of this — without collecting your child's data.
One app, every device, every browser. Adult content, gambling, vaping, scams, malware, social media — all blocked. PIN-locked. Free version available, no credit card.