Indian Village Directory

Thiruvallur District Village Directory

The Thiruvallur district village directory covers 617 Census 2011 village records across 9 taluks in Tamil Nadu. These records help you compare Census village codes, population, households, village area, local facilities, nearest-town details and administrative paths before opening an individual village profile. Across the available records, Thiruvallur district has 582 inhabited villages, 35 uninhabited village entries, 1,299,709 people and 331,697 households, with 290,786 hectares of recorded village area. For quick comparison, Ponneri has the most village records; Pulicut is the largest listed village by population; Karimanal has the largest recorded area. The facility summary adds local context: primary school is reported for 582 villages, mobile coverage is reported for 561 villages, all-weather road is reported for 575 villages. The figures are prepared from Census 2011 and District Census Handbook (DCHB) public records; postal context covers 352 offices and 61 PINs; banking context uses Reserve Bank of India (RBI) ATM, CDM and CRM access records.

In short:

Thiruvallur district has 617 Census 2011 village records in this directory, grouped under 9 taluks in Tamil Nadu.

Local Admin Units9
Villages617
Population1,299,709
Households331,697
Area (ha)290,785.61

Taluks in Thiruvallur

The taluk-wise table compares 9 taluks in Thiruvallur district using Census 2011 village records. Ponneri has 139 villages, about 23% of the district list. Thiruvallur has the largest listed village population at 289,759 people.

Taluk-wise Village List
TalukCensus CodeVillagesVillage ShareInhabited %PopulationPopulation ShareAvg Pop / VillageHouseholdsArea (ha)Area SharePop / sq kmLargest Village
Ambattur 05700 12 1.9% 100% 54,085 4.2% 4,507 13,518 6,408.71 2.2% 843.9 Vellanur
Gummidipoondi 05693 80 13% 95% 159,356 12% 1,992 42,148 38,913.84 13% 409.5 Arambakkam
Mathavaram 05701 17 2.8% 82% 29,360 2.3% 1,727 7,597 5,097.01 1.8% 576 Vilangadupakkam
Pallipattu 05697 39 6.3% 97% 151,910 12% 3,895 35,533 32,305.19 11% 470.2 Kolathur
Ponneri 05694 139 23% 93% 243,676 19% 1,753 64,051 60,389.35 21% 403.5 Pulicut
Poonamallee 05699 28 4.5% 86% 65,162 5% 2,327 16,635 8,551.39 2.9% 762 Korattur
Thiruvallur 05698 138 22% 96% 289,759 22% 2,1 73,778 60,282.78 21% 480.7 Pakkam
Tiruttani 05696 65 11% 100% 166,510 13% 2,562 41,368 43,304.42 15% 384.5 Krishnasamudram
Uthukkottai 05695 99 16% 92% 139,891 11% 1,413 37,069 35,532.92 12% 393.7 Periyapalayam

Taluks with the most village records

Ponneri, Thiruvallur and Uthukkottai are the taluks with the most village records in Thiruvallur district. Ponneri ranks first with 139 villages, 243,676 people and 403.5 people per sq km. Use this ranking to start local village search, Census code lookup and taluk comparison.

Top Local Admin Units by Village Count
RankTalukVillagesVillage SharePopulationPopulation ShareArea (ha)Area Share
1 Ponneri 139 23% 243,676 19% 60,389.35 21%
2 Thiruvallur 138 22% 289,759 22% 60,282.78 21%
3 Uthukkottai 99 16% 139,891 11% 35,532.92 12%
4 Gummidipoondi 80 13% 159,356 12% 38,913.84 13%
5 Tiruttani 65 11% 166,510 13% 43,304.42 15%
6 Pallipattu 39 6.3% 151,910 12% 32,305.19 11%
7 Poonamallee 28 4.5% 65,162 5% 8,551.39 2.9%
8 Mathavaram 17 2.8% 29,360 2.3% 5,097.01 1.8%
9 Ambattur 12 1.9% 54,085 4.2% 6,408.71 2.2%

Largest Villages by Population

Pulicut is the highest-population village listed for Thiruvallur district, with 17,925 people and 4,619 households. That is 1.4% of the district's listed village population. The average household size is 3.9. The nearest town is Ponneri; 20 km away.

Largest Villages by Population
RankVillagePopulationDistrict Pop ShareHouseholdsAvg Household SizeArea (ha)Pop / sq kmNearest TownTown Distance km
1 Pulicut 17,925 1.4% 4,619 3.9 1,185.73 1,511.7 Ponneri 20
2 Pakkam 17,342 1.3% 4,352 4 1,138.55 1,523.2 Thirunindravur 3
3 Thirupachur 12,353 1% 3,029 4.1 2,461.39 501.9 6
4 Vallur 11,935 0.9% 2,993 4 1,994.42 598.4 Minjur 4
5 Vellanur 11,668 0.9% 2,482 4.7 1,609.27 725 Avadi 7
6 Arambakkam 11,363 0.9% 2,798 4.1 1,767.08 643 Gummidipoondi 14
7 Kolathur 11,019 0.8% 2,498 4.4 1,226.01 898.8 Pallipattu 5
8 Morai 10,873 0.8% 2,718 4 1,163.09 934.8 Avadi 10
9 Thadaperumbakkam 10,618 0.8% 2,747 3.9 725.96 1,462.6 Ponneri 1
10 Valakanampudi 9,628 0.7% 2,236 4.3 1,036.38 929 Tiruttani 20

Largest Villages by Area

Karimanal has the largest recorded village area in Thiruvallur district at 3,894.75 hectares. It represents 1.3% of the district's listed village area. Its listed population density is 0 people per sq km. Use area figures for broad comparison only; land and revenue checks should use official records.

Largest Villages by Area
RankVillageArea (ha)District Area SharePopulationPop / sq kmHouseholdsHouseholds / haNearest TownTown Distance km
1 Karimanal 3,894.75 1.3% 0 0 — 0 Ponneri 26
2 Voyalur 2,728.63 0.9% 6,080 222.8 1,683 0.62 Minjur 10
3 Annamalaicheri 2,477.57 0.9% 2,029 81.9 488 0.2 Ponneri 22
4 Thirupachur 2,461.39 0.8% 12,353 501.9 3,029 1.23 6
5 Vallur 1,994.42 0.7% 11,935 598.4 2,993 1.5 Minjur 4
6 Sengundram 1,982.65 0.7% 0 0 — 0 3
7 Vadamadurai 1,936.17 0.7% 6,376 329.3 1,689 0.87 Uthukkottai 25
8 Goonipalayam 1,777.58 0.6% 2,131 119.9 536 0.3 Uthukkottai 10
9 Arambakkam 1,767.08 0.6% 11,363 643 2,798 1.58 Gummidipoondi 14
10 Elavur 1,622.61 0.6% 5,390 332.2 1,452 0.89 Gummidipoondi 5

Post Offices and PIN Codes in Thiruvallur District

Thiruvallur has 352 post office records across 61 PIN codes in the available postal dataset. Use this summary for address reference, PIN-code grouping and nearby post-office checks.

The postal summary adds India Post address-reference context for Thiruvallur district without turning the page into a full postal dump. It covers 352 offices across 61 PIN codes, including 301 delivery offices and 277 branch offices. PIN 601201 has the highest listed post-office count here with 15 offices. Selected rows are shown for quick reading; verify complete address and delivery details with India Post.

Post Offices / 100 Villages57.1
PIN Codes / 100 Villages9.9
Delivery Office %86%
Branch Office %79%
Coordinate Coverage %100%
Post Offices352
Unique PIN Codes61
Delivery Offices301
Non-delivery Offices51
Head Offices2
Sub Offices73
Branch Offices277

Top PIN Codes by Post Office Count

Top PIN codes by post office count
PIN CodePost Offices
601201 15
631210 13
631208 13
631302 12
631207 12
602023 12
631205 11
631209 11
601204 11
631203 10

Office Type Summary

Post office type summary
Office TypePost Offices
Head Office 2
Sub Office 73
Branch Office 277

Selected Post Offices and PIN Codes

Selected post offices and PIN codes
Office NamePINTypeDeliveryDivisionRegion
Avadi Camp Ho 600054 Head Office Delivery Tambaram Division Chennai City Region
Tiruvallur H. O 602001 Head Office Delivery Kanchipuram Division Chennai City Region
Ammavarikuppam S. O 631301 Post Office Delivery Kanchipuram Division Chennai City Region
Arni Cpt So 601101 Post Office Delivery Tambaram Division Chennai City Region
Arungolam S. O 631201 Post Office Delivery Kanchipuram Division Chennai City Region
Athimanjeripeta S. O 631202 Post Office Delivery Kanchipuram Division Chennai City Region
Avadi Iaf So 600055 Post Office Delivery Tambaram Division Chennai City Region
Erumbi S. O 631302 Post Office Delivery Kanchipuram Division Chennai City Region
Gummidipundi So 601201 Post Office Delivery Tambaram Division Chennai City Region
Ikkadu S. O 602021 Post Office Delivery Kanchipuram Division Chennai City Region
Kadambathur S. O 631203 Post Office Delivery Kanchipuram Division Chennai City Region
Kakalur Ind Estate S. O 602003 Post Office Delivery Kanchipuram Division Chennai City Region
Kamarajnagar So 600071 Post Office Delivery Tambaram Division Chennai City Region
Kanakammachatram S. O 631204 Post Office Delivery Kanchipuram Division Chennai City Region
Kavarapettai So 601206 Post Office Delivery Tambaram Division Chennai City Region
Kg Kandigai S. O 631205 Post Office Delivery Kanchipuram Division Chennai City Region
Madarpakkam So 601202 Post Office Delivery Tambaram Division Chennai City Region
Madduru S. O 631206 Post Office Delivery Kanchipuram Division Chennai City Region
Manavalanagar S. O 602002 Post Office Delivery Kanchipuram Division Chennai City Region
Minjur So 601203 Post Office Delivery Tambaram Division Chennai City Region
Nazarethpettai So 600123 Post Office Delivery Tambaram Division Chennai City Region
North Chennai Thermal Pp So 600120 Post Office Delivery Tambaram Division Chennai City Region
Pallipat S. O 631207 Post Office Delivery Kanchipuram Division Chennai City Region
Pannur S. O (Kanchipuram) 602108 Post Office Delivery Kanchipuram Division Chennai City Region
Pattabiram So 600072 Post Office Delivery Tambaram Division Chennai City Region
Perambakkam S. O 631402 Post Office Delivery Kanchipuram Division Chennai City Region
Periapalayam S. O 601102 Post Office Delivery Kanchipuram Division Chennai City Region
Podaturpeta S. O 631208 Post Office Delivery Kanchipuram Division Chennai City Region
Ponneri So 601204 Post Office Delivery Tambaram Division Chennai City Region
Ponniammanmedu So 600110 Post Office Delivery Tambaram Division Chennai City Region
Ponpadi Rs S. O 631213 Post Office Delivery Kanchipuram Division Chennai City Region
Poonamallee So 600056 Post Office Delivery Tambaram Division Chennai City Region
Poondi S. O 602023 Post Office Delivery Kanchipuram Division Chennai City Region
Poonimangadu S. O 631212 Post Office Delivery Kanchipuram Division Chennai City Region
Pulicat So 601205 Post Office Delivery Tambaram Division Chennai City Region
Ramakrishnarajupeta S. O 631303 Post Office Delivery Kanchipuram Division Chennai City Region
Redhills So 600052 Post Office Delivery Tambaram Division Chennai City Region
Saraswathinagar S. O 631211 Post Office Delivery Kanchipuram Division Chennai City Region
Sholavaram So 600067 Post Office Delivery Tambaram Division Chennai City Region
Somangalam S. O 600133 Post Office Delivery Tambaram Division Chennai City Region
Thirumushi So 600124 Post Office Delivery Tambaram Division Chennai City Region
Thiruverkadu So 600077 Post Office Delivery Tambaram Division Chennai City Region
Tirumullaivoyal So 600062 Post Office Delivery Tambaram Division Chennai City Region
Tiruninravur Rs S. O 602024 Post Office Delivery Kanchipuram Division Chennai City Region
Tirur Cpt S. O 602025 Post Office Delivery Kanchipuram Division Chennai City Region
Tiruttani S. O 631209 Post Office Delivery Kanchipuram Division Chennai City Region
Tiruvelangadu S. O 631210 Post Office Delivery Kanchipuram Division Chennai City Region
Uttukottai S. O 602026 Post Office Delivery Kanchipuram Division Chennai City Region
Vanganur S. O 631304 Post Office Delivery Kanchipuram Division Chennai City Region
Vengal S. O 601103 Post Office Delivery Kanchipuram Division Chennai City Region

Bank ATM, CDM and CRM Services in Thiruvallur District

Thiruvallur district has 815 bank ATM, Cash Deposit Machine (CDM) and Cash Recycler Machine (CRM) service records from Reserve Bank of India (RBI) data. The records cover 31 banks and 84 PIN codes. The list includes 526 ATMs, 269 CRMs and 7 CDMs. State Bank of India has the highest number of listed records, with 177 entries (22%). PIN code 600056 has the highest listed banking access count, with 69 records (8.5%). The density is 132.1 records per 100 village records. Use this section to understand local banking access patterns, then confirm current service status with the bank before visiting.

Records / 100 Villages132.1
ATM Share65%
CDM Share0.9%
CRM Share33%
Records / Bank26.3
ATM/CDM/CRM Records815
ATMs526
CRMs269
CDMs7
Electronic Kiosks11
Banks31
PINs84

Device Type Summary

ATM, CDM and CRM device type summary
Device TypeRecordsShare
ATM 526 65%
CRM 269 33%
CDM 7 0.9%
Electronic Kiosk 11 1.3%
E-Lobby 2 0.2%
E-Lobby 2 0.2%

Top Banks in This Area

Top banks by ATM/CDM/CRM record count
BankRecordsShare
State Bank of India 177 22%
Hdfc Bank Ltd. 102 13%
Axis Bank Limited 76 9.3%
Indian Bank 74 9.1%
ICICI Bank Limited 57 7%

Top PIN Codes by Banking Access Records

Top PIN codes by bank ATM, CDM and CRM service records
PIN CodeRecordsShare
600056 69 8.5%
602001 60 7.4%
600054 59 7.2%
600077 43 5.3%
602024 39 4.8%
601201 34 4.2%
600052 33 4%
631209 33 4%
601204 32 3.9%
600071 30 3.7%

Taluk-wise ATM/CDM/CRM Summary

Local administrative unit-wise ATM, CDM and CRM record summary
TalukRecordsATMsCRMsCDMsBanksPINs
Ambattur 55 39 16 0 13 13
Gummidipoondi 55 30 24 0 17 8
Maduravoyal 3 3 0 0 3 3
Mathavaram 11 7 3 1 5 5
No Block 1 0 1 0 1 1
Pallipattu 26 15 11 0 6 7
Ponneri 106 61 41 0 17 18
Poonamallee 265 169 87 4 24 21
Thiruvallur 210 155 53 1 28 54
Tiruttani 57 31 23 1 11 9
Uthukkottai 26 16 10 0 11 7

Selected Bank ATM, CDM and CRM Service Records

The selected rows show bank ATM, Cash Deposit Machine (CDM) and Cash Recycler Machine (CRM) service records for Thiruvallur district from Reserve Bank of India (RBI) data, including banks such as Axis Bank Limited, City Union Bank Limited and Bank of Baroda. The visible sample includes PIN codes such as 600095, 600062 and 600053. Verify the current address, service status and timings with the bank before visiting.

Selected bank ATM, CDM and CRM service records
BankTypePINDistrictLocal AreaCentreAddress
Axis Bank Limited ATM 600095 Thiruvallur Ambattur Vanagaram (Ct) Chennai 600095 432/1, Chetty Main Road, Melayanambakkam, Vanagaram, Thiruvallur, Tamil Nadu, 600095
City Union Bank Limited CRM 600062 Thiruvallur Ambattur Vellanur Vishnu Nagar (Near Veltech College) Vellanoor Plot No.102, Veerapuram Main Road, Thiruvallur, Tamil Nadu, 600062
Bank of Baroda ATM 600053 Thiruvallur Ambattur Alathur Ambattur, Chennai, Tamilnadu PIN 600053 2/2 Mth Road, Ravindranath Eye Clinic, Thiruvallur, Tamil Nadu, 600053
Canara Bank ATM 600052 Thiruvallur Ambattur Pothur Pothur Main Road Old No.42, Pothur, Thiruvallur, Tamil Nadu, 600052
Csb Bank Limited ATM 600077 Thiruvallur Ambattur Ayappakkam (Ct) 9th Main Road, Ayappakkam, Chennai, Tamil Nadu the Principal Officer, Ayappakkam Branch, Csb Bank Ltd, First Floor, No…
Hdfc Bank Ltd. ATM 600095 Thiruvallur Ambattur Vanagaram (Ct) 0 No34, Alapakkammainroad, Kuppusamynaiducomplex, Thiruvallur, Tamil Nadu, 600095
Axis Bank Limited ATM 600055 Thiruvallur Ambattur Palavedu Palavedu, Chennai - 600055 No.17, Bazzar Street, Old Police Station Road, Muthapudupet, Thiruvallur, Tamil Nadu, 600055
Axis Bank Limited ATM 600058 Thiruvallur Ambattur Ayappakkam (Ct) Ayappakkam, Chennai - 600058 No.4d/5, Vanagaram Main Road Athipet, Ambattur Industrial Estate, Thiruvallur, Tamil Nadu…

Full forms: ATM means Automated Teller Machine, CDM means Cash Deposit Machine, and CRM means Cash Recycler Machine.

ATM, Cash Deposit Machine (CDM) and Cash Recycler Machine (CRM) details are based on Reserve Bank of India (RBI) banking access records and should be verified with the bank before visiting. PIN code, district or sub-district matches do not prove that a facility is inside the village.

Population Summary

Thiruvallur district's village records list 1,299,709 people in 331,697 households. The average household size is 3.9. The listed village population density is 447 people per sq km.

Average Population / Village2,106
Average Household Size3.9
Inhabited Village %94%
Population Density / sq km447
Male Share0%
Female Share0%
SC Share0%
ST Share0%
Total Population1,299,709

Administrative Coverage

Administrative coverage connects Thiruvallur district villages with local governance names used in Census 2011 records. The page reports 18 CD blocks, 424 Gram Panchayats and 39 nearest-town names. Common nearest-town references include Aarani, Arakkonam and Arakonam.

CD Blocks Reported18
Gram Panchayats Reported424
Nearest Town Names Reported39

CD blocks reported: Ellapuram, Gummidipoondi, Kadambattur, Minjur, Minjur, Gummidipoondi, Minjur, Sholavaram, Not Under Any CD Block, Pallipattu, Poonamallee, Poondi, Puzhal, R. K.pet and more.

Gram Panchayats reported: 25 - Veppampattu, 26 - Veppampattu, 43 Panapakkam, 82 Panapakkam, Adigathur, Egattur, Agaram, Agaramel, Agoor, Akkarapakkam, Aladu , Kammarpalaya, Alamelumangapuram, Alapakkam and more.

Village Facility Coverage

Village facility coverage uses Census 2011 and District Census Handbook (DCHB) amenities fields for Thiruvallur district. The strongest reported signals are primary school in 582 villages (94% of district records), mobile coverage in 561 villages (91% of district records), all-weather road in 575 villages (93% of district records). Lower-count fields include PDS Shop and Mobile Coverage, so users should verify current services locally. Treat these figures as historical village amenities, not live service guarantees.

Facility Coverage Summary
FacilityVillages with FacilityReported VillagesGap Count% of All Villages
Primary School 582 582 — 94.33
Mobile Coverage 561 582 — 90.92
All-Weather Road 575 582 — 93.19
PDS Shop 542 582 — 87.84
Domestic Power Supply 582 582 — 94.33
Median Nearest Town Distance10 km
Villages within 5 km151
Villages over 25 km19
Nearest Town Distance Bands
Distance BandVillagesShare
Within 5 Km 151 25%
5-10 Km 173 29%
10-25 Km 260 43%
Over 25 Km 19 3.2%

Location and Distance Highlights

Location and distance highlights show how Thiruvallur villages relate to nearby towns and headquarters. Nearest-town distance is reported for 603 villages, with an average of 11.02 km and a median of 10 km. 151 villages are within 5 km of a listed town, while 19 are over 25 km away. Use these figures for orientation, not for survey, emergency travel or legal decisions.

Distance Summary
Distance TypeReported VillagesAverage kmMaximum kmVillagePlace / HQ
Nearest Town Distance 603 11.02 30 Madiyur Chennai

About the Available Data

This data coverage section explains what is available for Thiruvallur district. Across the visible sections, the page summarises 26 data fields and 15,464 reported values from Census 2011 and District Census Handbook (DCHB) public records. Some values may be blank, old or not listed, so important decisions should be checked with official records.

View available data by section
Data Available by Section
Data SectionFieldsReported ValuesAvailable / Positive Values
Census Codes and Administrative Details 6 3,700 2,468
Location and Distance 3 1,800 1,205
Population and Social Groups 3 1,816 1,746
Education Facilities 8 4,656 2,143
Connectivity, Roads and Transport 2 1,164 1,136
Financial, Market and Public Services 1 582 542
Power Supply 3 1,746 1,746

Data Method and Verification

This page is built as a reference guide, not as an official government record. The village figures come mainly from Census 2011 and District Census Handbook (DCHB) public data. DCHB is published under the Registrar General of India, Government of India.

Last Reviewed
30 May 2026
Main Source
Census 2011 village records and District Census Handbook data
Postal Context
Use India Post for current address confirmation
Banking Context
Use the bank or RBI source record for current service status

Use Vill for village search, Census code lookup, population context and local comparison. For land ownership, revenue records, postal delivery, banking service, emergency travel or legal work, confirm the latest details through the official portal or local office.

Frequently Asked Questions

How many villages are listed for Thiruvallur district?

Thiruvallur district has 617 Census 2011 village records in this directory. They are grouped across 9 taluks in Tamil Nadu.

Which taluk has the most village records in Thiruvallur district?

Ponneri has the most village records in Thiruvallur district, with 139 entries. This is 23% of the district list, with 243,676 people where population is reported.

Which village has the highest population in Thiruvallur district?

Pulicut is the highest-population village shown for Thiruvallur district, with 17,925 people and 4,619 households. It accounts for 1.4% of the listed district village population.

Which village has the largest recorded area in Thiruvallur district?

Karimanal has the largest recorded village area in this directory for Thiruvallur district, at 3,894.75 hectares. It represents 1.3% of the district's listed village area.

What population details are available for Thiruvallur district villages?

The population summary includes 1,299,709 people, 331,697 households, male and female population, sex ratio, Scheduled Caste and Scheduled Tribe figures where reported. For this page, average household size is 3.9 and population density is 447 people per sq km.

What village facilities are reported for Thiruvallur district?

The facility section uses Census 2011 and District Census Handbook (DCHB) village amenities fields. High-coverage signals include primary school in 582 villages (94% of district records), mobile coverage in 561 villages (91% of district records), all-weather road in 575 villages (93% of district records). These are historical records, not live service guarantees.

Does this page show postal and PIN details for Thiruvallur district?

Yes. The postal summary includes 352 offices and 61 PINs for Thiruvallur district. That is about 57.1 offices per 100 village records. Verify important address details with India Post.

What does the bank ATM, CDM and CRM data mean for Thiruvallur district?

The banking section shows bank ATM, Cash Deposit Machine (CDM) and Cash Recycler Machine (CRM) service records sourced from Reserve Bank of India (RBI) data. Thiruvallur district has 815 banking service records, about 132.1 records per 100 village records. State Bank of India has the highest number of listed records, with 177 entries. Current service details should be verified with the bank.

Which PIN code has the most bank ATM, CDM and CRM records in Thiruvallur district?

PIN code 600056 has the most listed bank ATM, CDM and CRM service records in Thiruvallur district, with 69 records in the available RBI-sourced data. Verify current service details with the bank before visiting.

How do I find a Census village code in Thiruvallur district?

Start from the taluk-wise table, open the local page, then choose the village. Village profiles show the Census village code where it is listed in the Census 2011 record.

How can I verify land records for villages in Thiruvallur district?

Use the official land-record portal for Tamil Nadu, or the district and revenue office links where available. Most portals ask for district, taluk, village and a record number such as khata, khatiyan, plot, khasra or owner name depending on the state. Vill is for village directory context, not land ownership proof.

Is the Thiruvallur district village data live or historical?

The village details are mainly based on Census 2011 and District Census Handbook (DCHB) public records. Some administrative names, facilities, PINs or services may have changed after 2011, so verify important details with official sources.

Source note: Vill prepares village pages mainly from Census 2011 and District Census Handbook (DCHB) public records published under the Registrar General of India, Government of India. Postal context is for address reference, and banking context uses available Reserve Bank of India (RBI) access records where shown. Some values may be blank, old or not listed. Please verify important details with official records before using them for legal, land, revenue, postal, financial or administrative work. Page last reviewed: 30 May 2026.