Caller identification and CNAP: India's defences against spam and fraud calls
Why in news: On 13 October 2026, DoT told all access-service operators to present callers' names on 4G and higher networks from 1 November 2026.
Caller identification tells a called user who is calling. Calling Line Identification Presentation (CLIP) shows only the number; Calling Name Presentation (CNAP) adds the caller's name from operator records. TRAI's TCCCPR, 2018 polices spam, and DoT's Sanchar Saathi tools target fraud. DoT has now ordered CNAP on 4G and higher networks from 1 November 2026.
Syllabus: GS2 · Statutory & Regulatory Bodies; GS3 · Science & Technology; GS3 · Cyber Security & Money Laundering
Why this matters for UPSC
GS3 (cyber security and communication networks) and GS2 (regulatory bodies): Prelims can ask what CLI, CLIP, CLIR and CNAP are, who frames the TCCCPR, and Sanchar Saathi versus Chakshu; Mains, about telecom fraud and privacy.
In short
Caller identification is what a network tells a called user about the caller; India is adding the subscriber-record name (CNAP) to the bare number (CLIP) against fraud.
CNAP puts a name beside the number, but a name is not a verdict; its value rests on clean KYC and swift disconnection.
Why it matters
A pensioner who gets a call claiming to be from her bank today sees only a number and has to guess. With CNAP, the screen also carries the name the caller's operator holds, so a 'bank' call showing a stranger's name, or 'International Call', becomes a warning sign before she shares an OTP. Firms with a verified trade name on record should find more of their calls answered. Yet a real name only says who owns the connection, not whether the caller is honest, and people on 2G and 3G networks or landlines are not yet covered. The larger question is how far identity should travel with every call: names deter fraud, but they also expose callers to strangers.
Prelims pointers
- TCCCPR, 2018: TRAI's regulations under the TRAI Act, 1997; SMS headers end in -P, -S, -T or -G for promotional, service, transactional or government messages.
- Commercial call series: promotional calls come from the 140 series; TRAI has prescribed the 1600 series for service and transactional calls of the financial sector.
- Spam complaints: through the TRAI DND app, an operator's app or portal, or 1909 by SMS or call, within 7 days; Sanchar Saathi also accepts them.
- Section 42(3) of the Telecommunications Act, 2023: tampering with telecommunication identifiers is punishable with up to three years' jail, a fine up to Rs 50 lakh, or both.
- Authorisation Rules, 2026: operators must deploy tools to detect and stop spoofed CLI; international gateways drop calls with missing or spoofed CLI and mark others 'International Number'.
- Section 3(7), in force since 21 August 2026: verifiable biometric identification of users of notified services, namely wireless access and internet telephony through mobile terminals.
- Telecom Cyber Security Rules, 2024, rule 5: after notice and a seven-day reply window, the Centre may suspend or permanently disconnect a misused number; urgent suspension needs no notice.
- Cyber-fraud victims report to helpline 1930 or cybercrime.gov.in; Chakshu is for suspected fraud communication before any money is lost.
Practise a UPSC-style question
With reference to Calling Name Presentation (CNAP), consider the following statements:
1. It is a supplementary service through which the called party receives the name of the calling party.
2. In India, the name shown is fetched from a single central database run by the Department of Telecommunications.
3. TRAI's 2024 recommendations proposed that operators provide it to subscribers upon their request.
Which of the statements given above is/are correct?
- (a) 1 and 2 only
- (b) 2 and 3 only
- (c) 1 and 3 only
- (d) 1, 2 and 3
Show the answer
Answer: (c) 1 and 3 only
Answer: (c) 1 and 3 only. CNAP is a name-presentation supplementary service, but each originating operator keeps the names, not DoT.
Statement 1: correct. ETSI defines CNAP as letting the called party receive the calling name; the ITU calls it calling name identification presentation.
Statement 2: incorrect. Under DoT's circular, each originating operator keeps a database of its users' names and the terminating operator queries it; there is no single DoT database.
Statement 3: correct. TRAI's recommendations of 23 February 2024 said operators should provide CNAP to subscribers upon their request; DoT later sought it by default.
Eliminate: Judge statement 2 first: names sit in each originating operator's database, not a central DoT one, so statement 2 is incorrect. Out: (a), (b), (d).
Trap: Swapped attribution. The job of keeping names is moved from each originating operator to a central DoT database, which sounds plausible for a government-ordered service.
Remember: CNAP names come from the caller's own operator's subscriber records; TRAI wanted it on request, DoT gives it without one.
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