Channel
@ketabche2021
On this record: Growth · Engagement · Posts · Citations · Handles named that no longer answer · Cite this entry
70subscribers
-2 since we began measuring on 7 August 2026
Risers and fallers across the register · movement among entries of Under 1,000.
| Telegram ID | -1001261443126 |
|---|---|
| Type | Channel |
| Username | @ketabche2021 |
| Created | Between 1 March 2018 and 31 August 2021 — estimated from Telegram’s id allocation, not measured. How this range is calculated. |
| First recorded | 9 August 2026 |
| Last confirmed live | 12 September 2026 |
| Measurements held | 3 |
| Confirmed unchanged | 3 times, most recently 12 September 2026 |
| On Telegram | t.me/ketabche2021 |
| Measured (UTC) | Subscribers | Change |
|---|---|---|
| 28 Aug 2026, 08:32 | 70 | -2 |
| 9 Aug 2026, 22:47 | 72 | no change |
| 7 Aug 2026, 02:08 | 72 | first reading |
14 posts held, back to 13 May 2022 — the reader has not yet reached the start of this channel’s public history, so older posts may sit further back, unread. Read across 1 page of Telegram’s post history, 20 posts per page.
Nothing published in the last 30 days. ERR and ER are rolling 30-day measures, so there is nothing to compute — we hold 14 posts for this entry, the most recent from 14 October 2022. An engagement rate over an empty window would be a number about nothing.
*ایمنی در آزمایشگاه شیمی *اصول شیمی عمومی ۱ نوشته مارتین سیلبربرگ #درخواست_کتاب عزیزانی که این کتاب هارا داشته و قصد فروش دارند به ایدی زیر پیام دهند . *مبانی فیزیک جلد اول هالیدی. ویرایش هشتم ترجمه محمد ابراهیم ابوکاظمی جلال الدین پاشایی راد. محمد رضا کلاه چی *شیمی مورتیمر ۱ *مبانی فیزیک جلد اول ویرایش ۱۰ یا ۱۱ آیدی @mgh1381
📚نام کتاب:مبانی فیزیک 📚نویسنده:دیوید هالیدی 📚ویرایش:هشتم 📚قیمت:۵۰/۰۰۰ 📚آیدی: dhghn_7778 #جمعیت_خیریه_طلوع_مهر
📚نام کتاب:آزمایشگاه فیزیک (جلد اول) 📚نویسنده:دکتر اعظم کارگردان 📚ویرایش: 📚قیمت:۲۵/۰۰۰ 📚آیدی: dhghn_7778 #جمعیت_خیریه_طلوع_مهر
📚نام کتاب:حساب دیفرانسیل و انتگرال چند متغیره 📚نویسنده:دکتر علیرضا نقی پور 📚ویرایش: 📚قیمت:۳۰/۰۰۰ 📚آیدی: dhghn_7778 (مربوط به درس ریاضی عمومی ۲ دکتر فرهادی) #جمعیت_خیریه_طلوع_مهر
ریاضیات پایه : ۸۵ هزار تومن شیمی عمومی : ۳۵ هزار تومن @msmh_21
Photo, posted without a caption
Photo, posted without a caption
ریاضیات پایه مسعودنیکوکار،بهمن عربزاده قیمت : 85 تومن شیمی عمومی 1 مورتمیر و راهنمای حل مسائل ترجمه عیسی یاوری قیمت: 110 مبانی زمین شناسی تاربوک ، لوتگن ترجمه دکتر اخروی قیمت: 60 زمین شناسی تاریخی دکتر طاهری قیمت : 50 زمین شناسی تاریخی دکتر داستانپور قیمت :25
شیمی آلی مدرسان شریف(جلدقرمز) قیمت : 150000تومان چاپ هفتم آیدی : @R_Del1998
شیمی معدنی(میکروطبقه بندی شده) مدرسان شریف قیمت : 285000تومان نو و دست نخورده(چاپ نهم_تابستان۱۴۰۰) آیدی : @R_Del1998
زبان تخصصی شیمی دکتر علیرضا عابدین قیمت : 87000تومان کتاب نو میباشد(چاپ ششم) آیدی : @R_Del1998
سوالات نوین درشیمی آلی دکتر اسلامی قیمت : 154000تومان نو و دست نخورده(چاپ پنجم_سال۹۸) آیدی : @R_Del1998
Showing the 12 most recent of 14 posts we hold for @ketabche2021. View and reaction counts are the latest single reading for each post, not a live figure, and a recent post is still accumulating both. A view count marked ≈ was rounded by Telegram before we ever saw it — t.me prints views in full below 1,000 and to three significant figures above, so ≈1,200,000 means somewhere between 1,150,000 and 1,249,999. Unmarked counts are exact. Text is reproduced from the public post preview and truncated for length.
Named by 1 registered channel — every channel on the register whose own posts have named this one, by its current username or any other username it currently holds, merged from two separately captured readings of the same fact so a namer caught by only one of them is not missed and a namer both caught is not counted twice. A username this channel has since dropped is not matched — that handle may belong to someone else now, and crediting today’s namer to yesterday’s owner would misattribute it.
Named by
Channels on the register whose posts name this channel's handle.
A mention is a weaker signal than a forward and is counted separately for that reason — naming a channel is not republishing it, and a handle in a post body is easy to place deliberately. The post counts beside each row below are distinct posts in which the handle appeared, from posts we have read on both sides — the “Named by N registered channels” figure above is a different count, of distinct NAMING CHANNELS rather than posts, and is not the sum of the rows under it.
@ketabche2021 named 1 handle that resolve to nothing today. That is a fact about the reference, not necessarily a fact about the handle’s history — see the two groups below.
Most of these may never have existed as a live channel at all. A handle a channel names can be a typo, an aspirational name nobody registered, or a channel that was already gone before this one ever mentioned it. Unless a row below is marked evidenced, all we know is that it references a handle that is not a live channel today — not that anything “died”. How this is measured.
References a handle that is not a live channel — we have no record it ever was one.
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 28 August 2026 — this entry's latest reading, not the date you are reading this.
“کتابچه” (@ketabche2021), 70 subscribers as measured 28 August 2026. Telegram Register, tgregister.com/channel/ketabche2021.
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.