{"classifier_version":"1.4.0","documentation":"https://rirtracker.com/api/","disclaimer":"This site independently analyzes publicly available Internet number-resource records. It is not affiliated with or endorsed by ARIN, the RIPE NCC, APNIC, LACNIC, AFRINIC, the Number Resource Organization (NRO), or any other Regional Internet Registry. Classifications and hold-expiration dates are evidence-based interpretations and do not constitute confirmation that a resource is available for issuance or transfer.","resource":"AS397535","resource_type":"asn","page":"https://rirtracker.com/asn/397535/","statistics_now":{"registry":"ARIN","status":"assigned (dated 2019-08-22)"},"current_holder":{"rir":"ARIN","org":null,"how":"ARIN's latest statistics"},"rdap_snapshots":[],"transfers":[],"events":[{"event_id":"1fa7d108694d10bc","registry":"ARIN","report_date":"2019-08-22","source":"arin_issued","raw_action":"ADD","raw_line":"Add AS397535","resource_type":"asn","resource":"AS397535","start":397535,"end":397535,"classification":"APPARENT_REISSUANCE","classification_label":"Apparent reissuance of previously removed resource","confidence":"OBSERVED_ONLY","source_rir":null,"recipient_rir":null,"source_organization":null,"recipient_organization":null,"inventory_effect":"Likely issued from ARIN-controlled inventory","inventory_effect_code":"ISSUED","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-13T23:52:34+00:00","page":"https://rirtracker.com/asn/397535/#e-1fa7d108694d10bc","report_page":"https://rirtracker.com/arin/reports/2019-08-22/","evidence_url":"https://rirtracker.com/api/v1/resources/asn/397535.json","explanation":"No transfer record matches. ARIN's statistics show it reserved on 2019-08-21 and assigned (dated 2019-08-22) on 2019-08-23. The tracker saw this range released from hold on 2019-08-21 (AS397535), so it appears to have been issued again from ARIN's pool. Another change to this range was reported the day before or after (2019-08-21: Remove AS397535), so the before-and-after statistics may include it.","evidence":[{"type":"arin_issued","url":"https://lists.arin.net/pipermail/arin-issued/2019-August/003907.html","retrieved_at":"2026-10-12T18:40:35+00:00","summary":"ARIN-Issued report for 2019-08-22: \"Add AS397535\""},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2019/delegated-arin-extended-20190821.gz","retrieved_at":"2026-10-12T22:09:58+00:00","summary":"ARIN delegated statistics 2019-08-21 (produced 2019-08-21T14:00:13+00:00), before the report: reserved"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2019/delegated-arin-extended-20190823.gz","retrieved_at":"2026-10-12T22:10:03+00:00","summary":"ARIN delegated statistics 2019-08-23 (produced 2019-08-23T14:00:13+00:00), after the report: assigned (dated 2019-08-22)"}]},{"event_id":"f2241769e4da9988","registry":"ARIN","report_date":"2019-08-21","source":"arin_issued","raw_action":"REMOVE","raw_line":"Remove AS397535","resource_type":"asn","resource":"AS397535","start":397535,"end":397535,"classification":"POOL_RECORD_CHANGE","classification_label":"Change to ARIN's own pool record","confidence":"OBSERVED_ONLY","source_rir":null,"recipient_rir":null,"source_organization":null,"recipient_organization":null,"inventory_effect":"Inventory effect unknown","inventory_effect_code":"UNKNOWN","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-13T23:52:34+00:00","page":"https://rirtracker.com/asn/397535/#e-f2241769e4da9988","report_page":"https://rirtracker.com/arin/reports/2019-08-21/","evidence_url":"https://rirtracker.com/api/v1/resources/asn/397535.json","explanation":"ARIN's statistics show it reserved on 2019-08-20 and assigned (dated 2019-08-22) on 2019-08-22. ARIN removed its own pool record for this range and the range is now registered, but the same report doesn't list it as added. Another change to this range was reported the day before or after (2019-08-22: Add AS397535), so the before-and-after statistics may include it.","evidence":[{"type":"arin_issued","url":"https://lists.arin.net/pipermail/arin-issued/2019-August/003906.html","retrieved_at":"2026-10-12T18:40:35+00:00","summary":"ARIN-Issued report for 2019-08-21: \"Remove AS397535\""},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2019/delegated-arin-extended-20190820.gz","retrieved_at":"2026-10-12T22:09:55+00:00","summary":"ARIN delegated statistics 2019-08-20 (produced 2019-08-20T14:00:13+00:00), before the report: reserved"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2019/delegated-arin-extended-20190822.gz","retrieved_at":"2026-10-12T22:10:00+00:00","summary":"ARIN delegated statistics 2019-08-22 (produced 2019-08-22T14:00:13+00:00), after the report: assigned (dated 2019-08-22)"}]},{"event_id":"f31a9c95bb130ee4","registry":"ARIN","report_date":"2019-05-13","source":"statistics","raw_action":"NOT_IN_ARIN_ISSUED","raw_line":null,"resource_type":"asn","resource":"AS397535","start":397535,"end":397535,"classification":"REMOVED_REASON_UNKNOWN","classification_label":"Removed (return, revocation or reclamation not publicly distinguishable)","confidence":"STRONG_INFERENCE","source_rir":null,"recipient_rir":null,"source_organization":null,"recipient_organization":null,"inventory_effect":"Possible future reissue candidate after hold","inventory_effect_code":"HOLD_CANDIDATE","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-14T00:05:34+00:00","page":"https://rirtracker.com/asn/397535/#e-f31a9c95bb130ee4","report_page":"https://rirtracker.com/arin/reports/2019-05-13/","evidence_url":"https://rirtracker.com/api/v1/resources/asn/397535.json","observed":"AS397535 assigned on 2019-05-13, reserved on 2019-05-14","hold":{"hold_rule_source_url":"https://www.arin.net/resources/guide/request/#reissuing-returned-revoked-and-reclaimed-resources","hold_rule_months":6,"estimated_hold_end":"2019-11-13","availability_statement":"Possible reissue candidate after this date; not confirmed available"},"explanation":"Removed from active registration. ARIN-Issued didn't list this; the tracker found it by comparing ARIN's daily statistics. ARIN's statistics show it assigned (dated 2019-05-01) on 2019-05-12 and reserved on 2019-05-14. Public sources do not distinguish a voluntary return, revocation, or reclamation. ARIN holds returned, revoked and reclaimed ASNs for 6 calendar months before reissuing them, so the estimated hold end is 2019-11-13. This does not confirm availability.","evidence":[{"type":"statistics_diff","url":"https://ftp.arin.net/pub/stats/arin/archive/2019/delegated-arin-extended-20190514.gz","retrieved_at":"2026-10-12T22:05:01+00:00","summary":"Not listed in ARIN-Issued; found by comparing ARIN's daily statistics: AS397535 assigned on 2019-05-13, reserved on 2019-05-14"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2019/delegated-arin-extended-20190512.gz","retrieved_at":"2026-10-12T22:04:56+00:00","summary":"ARIN delegated statistics 2019-05-12 (produced 2019-05-12T05:00:13+00:00), before the report: assigned (dated 2019-05-01)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2019/delegated-arin-extended-20190514.gz","retrieved_at":"2026-10-12T22:05:01+00:00","summary":"ARIN delegated statistics 2019-05-14 (produced 2019-05-14T05:00:14+00:00), after the report: reserved"}]},{"event_id":"6632d10706a7d87d","registry":"ARIN","report_date":"2019-05-01","source":"arin_issued","raw_action":"ADD","raw_line":"Add AS397535","resource_type":"asn","resource":"AS397535","start":397535,"end":397535,"classification":"APPARENT_NEW_ISSUANCE","classification_label":"Apparent new issuance","confidence":"STRONG_INFERENCE","source_rir":null,"recipient_rir":null,"source_organization":null,"recipient_organization":null,"inventory_effect":"Likely issued from ARIN-controlled inventory","inventory_effect_code":"ISSUED","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-13T23:52:29+00:00","page":"https://rirtracker.com/asn/397535/#e-6632d10706a7d87d","report_page":"https://rirtracker.com/arin/reports/2019-05-01/","evidence_url":"https://rirtracker.com/api/v1/resources/asn/397535.json","explanation":"No transfer record matches. ARIN's statistics show it available on 2019-04-30 and assigned (dated 2019-05-01) on 2019-05-02. It moved from ARIN's unissued pool to an active registration dated around the report, so it appears to be newly issued by ARIN.","evidence":[{"type":"arin_issued","url":"https://lists.arin.net/pipermail/arin-issued/2019-May/003794.html","retrieved_at":"2026-10-12T18:40:29+00:00","summary":"ARIN-Issued report for 2019-05-01: \"Add AS397535\""},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2019/delegated-arin-extended-20190430.gz","retrieved_at":"2026-10-12T22:04:18+00:00","summary":"ARIN delegated statistics 2019-04-30 (produced 2019-04-30T05:00:11+00:00), before the report: available"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2019/delegated-arin-extended-20190502.gz","retrieved_at":"2026-10-12T22:04:23+00:00","summary":"ARIN delegated statistics 2019-05-02 (produced 2019-05-02T05:00:12+00:00), after the report: assigned (dated 2019-05-01)"}]}],"classification_history":{"1fa7d108694d10bc":[{"raw_change_id":160981,"classification_code":"APPARENT_REISSUANCE","confidence":"OBSERVED_ONLY","classifier_version":"1.3.0","classified_at":"2026-10-13T03:45:16+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it reserved on 2019-08-21 and assigned (dated 2019-08-22) on 2019-08-23. The tracker saw this range released from hold on 2019-08-21 (AS397535), so it appears to have been issued again from ARIN's pool. Another change to this range was reported the day before or after (2019-08-21: Remove AS397535), so the before-and-after statistics may include it."},{"raw_change_id":160981,"classification_code":"APPARENT_REISSUANCE","confidence":"OBSERVED_ONLY","classifier_version":"1.3.1","classified_at":"2026-10-13T08:06:36+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it reserved on 2019-08-21 and assigned (dated 2019-08-22) on 2019-08-23. The tracker saw this range released from hold on 2019-08-21 (AS397535), so it appears to have been issued again from ARIN's pool. Another change to this range was reported the day before or after (2019-08-21: Remove AS397535), so the before-and-after statistics may include it."},{"raw_change_id":160981,"classification_code":"APPARENT_REISSUANCE","confidence":"OBSERVED_ONLY","classifier_version":"1.3.2","classified_at":"2026-10-13T14:49:20+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it reserved on 2019-08-21 and assigned (dated 2019-08-22) on 2019-08-23. The tracker saw this range released from hold on 2019-08-21 (AS397535), so it appears to have been issued again from ARIN's pool. Another change to this range was reported the day before or after (2019-08-21: Remove AS397535), so the before-and-after statistics may include it."},{"raw_change_id":160981,"classification_code":"APPARENT_REISSUANCE","confidence":"OBSERVED_ONLY","classifier_version":"1.4.0","classified_at":"2026-10-13T23:52:34+00:00","current":1,"public_explanation":"No transfer record matches. ARIN's statistics show it reserved on 2019-08-21 and assigned (dated 2019-08-22) on 2019-08-23. The tracker saw this range released from hold on 2019-08-21 (AS397535), so it appears to have been issued again from ARIN's pool. Another change to this range was reported the day before or after (2019-08-21: Remove AS397535), so the before-and-after statistics may include it."}],"f2241769e4da9988":[{"raw_change_id":160965,"classification_code":"POOL_RECORD_CHANGE","confidence":"OBSERVED_ONLY","classifier_version":"1.3.0","classified_at":"2026-10-13T03:45:15+00:00","current":0,"public_explanation":"ARIN's statistics show it reserved on 2019-08-20 and assigned (dated 2019-08-22) on 2019-08-22. ARIN removed its own pool record for this range and the range is now registered, but the same report doesn't list it as added. Another change to this range was reported the day before or after (2019-08-22: Add AS397535), so the before-and-after statistics may include it."},{"raw_change_id":160965,"classification_code":"POOL_RECORD_CHANGE","confidence":"OBSERVED_ONLY","classifier_version":"1.3.1","classified_at":"2026-10-13T08:06:36+00:00","current":0,"public_explanation":"ARIN's statistics show it reserved on 2019-08-20 and assigned (dated 2019-08-22) on 2019-08-22. ARIN removed its own pool record for this range and the range is now registered, but the same report doesn't list it as added. Another change to this range was reported the day before or after (2019-08-22: Add AS397535), so the before-and-after statistics may include it."},{"raw_change_id":160965,"classification_code":"POOL_RECORD_CHANGE","confidence":"OBSERVED_ONLY","classifier_version":"1.3.2","classified_at":"2026-10-13T14:49:19+00:00","current":0,"public_explanation":"ARIN's statistics show it reserved on 2019-08-20 and assigned (dated 2019-08-22) on 2019-08-22. ARIN removed its own pool record for this range and the range is now registered, but the same report doesn't list it as added. Another change to this range was reported the day before or after (2019-08-22: Add AS397535), so the before-and-after statistics may include it."},{"raw_change_id":160965,"classification_code":"POOL_RECORD_CHANGE","confidence":"OBSERVED_ONLY","classifier_version":"1.4.0","classified_at":"2026-10-13T23:52:34+00:00","current":1,"public_explanation":"ARIN's statistics show it reserved on 2019-08-20 and assigned (dated 2019-08-22) on 2019-08-22. ARIN removed its own pool record for this range and the range is now registered, but the same report doesn't list it as added. Another change to this range was reported the day before or after (2019-08-22: Add AS397535), so the before-and-after statistics may include it."}],"f31a9c95bb130ee4":[{"raw_change_id":373811,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T05:29:55+00:00","current":0,"public_explanation":"Removed from active registration. ARIN-Issued didn't list this; the tracker found it by comparing ARIN's daily statistics. ARIN's statistics show it assigned (dated 2019-05-01) on 2019-05-12 and reserved on 2019-05-14. Public sources do not distinguish a voluntary return, revocation, or reclamation. ARIN holds returned, revoked and reclaimed ASNs for 6 calendar months before reissuing them, so the earliest estimated hold expiration is 2019-11-13. This does not confirm availability."},{"raw_change_id":373811,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.1","classified_at":"2026-10-13T08:17:29+00:00","current":0,"public_explanation":"Removed from active registration. ARIN-Issued didn't list this; the tracker found it by comparing ARIN's daily statistics. ARIN's statistics show it assigned (dated 2019-05-01) on 2019-05-12 and reserved on 2019-05-14. Public sources do not distinguish a voluntary return, revocation, or reclamation. ARIN holds returned, revoked and reclaimed ASNs for 6 calendar months before reissuing them, so the earliest estimated hold expiration is 2019-11-13. This does not confirm availability."},{"raw_change_id":373811,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.2","classified_at":"2026-10-13T15:01:10+00:00","current":0,"public_explanation":"Removed from active registration. ARIN-Issued didn't list this; the tracker found it by comparing ARIN's daily statistics. ARIN's statistics show it assigned (dated 2019-05-01) on 2019-05-12 and reserved on 2019-05-14. Public sources do not distinguish a voluntary return, revocation, or reclamation. ARIN holds returned, revoked and reclaimed ASNs for 6 calendar months before reissuing them, so the earliest estimated hold expiration is 2019-11-13. This does not confirm availability."},{"raw_change_id":373811,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-14T00:05:34+00:00","current":1,"public_explanation":"Removed from active registration. ARIN-Issued didn't list this; the tracker found it by comparing ARIN's daily statistics. ARIN's statistics show it assigned (dated 2019-05-01) on 2019-05-12 and reserved on 2019-05-14. Public sources do not distinguish a voluntary return, revocation, or reclamation. ARIN holds returned, revoked and reclaimed ASNs for 6 calendar months before reissuing them, so the estimated hold end is 2019-11-13. This does not confirm availability."}],"6632d10706a7d87d":[{"raw_change_id":159563,"classification_code":"APPARENT_NEW_ISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T03:44:13+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it available on 2019-04-30 and assigned (dated 2019-05-01) on 2019-05-02. It moved from ARIN's unissued pool to an active registration dated around the report, so it appears to be newly issued by ARIN."},{"raw_change_id":159563,"classification_code":"APPARENT_NEW_ISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.1","classified_at":"2026-10-13T08:06:32+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it available on 2019-04-30 and assigned (dated 2019-05-01) on 2019-05-02. It moved from ARIN's unissued pool to an active registration dated around the report, so it appears to be newly issued by ARIN."},{"raw_change_id":159563,"classification_code":"APPARENT_NEW_ISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.2","classified_at":"2026-10-13T14:49:15+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it available on 2019-04-30 and assigned (dated 2019-05-01) on 2019-05-02. It moved from ARIN's unissued pool to an active registration dated around the report, so it appears to be newly issued by ARIN."},{"raw_change_id":159563,"classification_code":"APPARENT_NEW_ISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-13T23:52:29+00:00","current":1,"public_explanation":"No transfer record matches. ARIN's statistics show it available on 2019-04-30 and assigned (dated 2019-05-01) on 2019-05-02. It moved from ARIN's unissued pool to an active registration dated around the report, so it appears to be newly issued by ARIN."}]},"arin_statistics_now":{"status":"assigned (dated 2019-08-22)"}}