Channel
Cambridge 21 books
@cambridge21books
On this record: Growth · Engagement · Telegram's recommendations · Cite this entry
6,346subscribers
+279 since we began measuring on 12 August 2026
Risers and fallers across the register · movement among entries of 3,162–10,000.
Register entry
| Telegram ID | -1001426537717 |
|---|---|
| Type | Channel |
| Username | @cambridge21books |
| Created | Between 1 April 2019 and 31 October 2021 — estimated from Telegram’s id allocation, not measured. How this range is calculated. |
| First recorded | 28 August 2026 |
| Last confirmed live | 7 September 2026 |
| Measurements held | 10 |
| Confirmed unchanged | 1 time, most recently 7 September 2026 |
| On Telegram | t.me/cambridge21books |
Growth
| Measured (UTC) | Subscribers | Change |
|---|---|---|
| 7 Sept 2026, 04:56 | 6,346 | +57 |
| 2 Sept 2026, 13:34 | 6,289 | +27 |
| 30 Aug 2026, 07:07 | 6,262 | +19 |
| 28 Aug 2026, 22:33 | 6,243 | no change |
| 27 Aug 2026, 00:48 | 6,243 | +16 |
| 23 Aug 2026, 22:33 | 6,227 | +23 |
| 20 Aug 2026, 15:37 | 6,204 | +46 |
| 17 Aug 2026, 09:48 | 6,158 | +80 |
| 13 Aug 2026, 10:36 | 6,078 | +11 |
| 12 Aug 2026, 16:02 | 6,067 | first reading |
Engagement
Posts not read yet. This entry is on the register from its profile alone; the post reader has not reached it. Engagement figures appear here once posts have actually been measured — we do not publish a rate before we have the readings behind it.
Appears in Telegram’s recommendations for other channels
The reverse of the list above, and a different kind of signal. This does not require this channel to have ever been asked about directly — each row below is a channel we DID ask Telegram about, whose Telegram-generated list happened to include this one. A channel can appear here with an empty list above it, because being named by someone else’s query is independent of having been queried itself.
@IELTS_CAMBRIDGE1 · 141,006
Telegram ranks this channel #1 of 83 here — alongside 82 others — read 13 August 2026
@cambridge_library · 126,792
Telegram ranks this channel #11 of 82 here — alongside 81 others — read 13 August 2026
@cambridgematerials · 157,281
Telegram ranks this channel #40 of 89 here — alongside 88 others — read 12 August 2026
This channel appears in 3 seed channels' Telegram-generated recommendation lists in total. Each is Telegram’s list for THAT channel, not this one — see how this is measured.
Cite this entry
A live page changes as we take new readings, so a citation should name the measurement it is based on, not just the URL. The line below cites the subscriber count as measured 7 September 2026 — this entry's latest reading, not the date you are reading this.
“Cambridge 21 books” (@cambridge21books), 6,346 subscribers as measured 7 September 2026. Telegram Register, tgregister.com/channel/cambridge21books.
Full measurement history, CC BY 4.0. Every reading this register holds for this entry, not just the latest one, as a dated, downloadable record: CSV · JSON. Free to use with attribution to tgregister.com. Each file carries its own generation timestamp, which is the figure to cite for exactly when the data was retrieved.