{"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":"74.91.48.0/20","resource_type":"ipv4","page":"https://rirtracker.com/ip/74.91.48.0-74.91.63.255/","statistics_now":{"registry":"ARIN","status":"allocated (dated 2016-09-02)"},"current_holder":{"rir":"ARIN","org":null,"how":"ARIN's latest statistics"},"rdap_snapshots":[],"transfers":[],"events":[{"event_id":"86f3bec6f658101b","registry":"ARIN","report_date":"2016-09-02","source":"arin_issued","raw_action":"ADD","raw_line":"Add 74.91.48.0-74.91.63.255","resource_type":"ipv4","resource":"74.91.48.0/20","start":"74.91.48.0","end":"74.91.63.255","classification":"UNRESOLVED","classification_label":"Unresolved change","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":"2026-10-13T23:51:38+00:00","page":"https://rirtracker.com/ip/74.91.48.0-74.91.63.255/#e-86f3bec6f658101b","report_page":"https://rirtracker.com/arin/reports/2016-09-02/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/74.91.48.0-74.91.63.255.json","explanation":"No transfer record matches. ARIN's statistics show it not listed on 2016-09-01 and allocated (dated 2016-09-02) on 2016-09-03. It wasn't in ARIN's statistics before, so it wasn't ARIN's unissued inventory; it may have come from another registry in a transfer not yet in the log.","evidence":[{"type":"arin_issued","url":"https://lists.arin.net/pipermail/arin-issued/2016-September/002822.html","retrieved_at":"2026-10-12T18:39:21+00:00","summary":"ARIN-Issued report for 2016-09-02: \"Add 74.91.48.0-74.91.63.255\""},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2016/delegated-arin-extended-20160901.gz","retrieved_at":"2026-10-12T21:15:36+00:00","summary":"ARIN delegated statistics 2016-09-01 (produced 2016-09-01T05:09:07+00:00), before the report: not listed"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2016/delegated-arin-extended-20160903.gz","retrieved_at":"2026-10-12T21:15:48+00:00","summary":"ARIN delegated statistics 2016-09-03 (produced 2016-09-03T05:09:41+00:00), after the report: allocated (dated 2016-09-02)"}]},{"event_id":"d98ae361d48571c5","registry":"ARIN","report_date":"2012-02-28","source":"statistics","raw_action":"NOT_IN_ARIN_ISSUED","raw_line":null,"resource_type":"ipv4","resource":"74.91.48.0/20","start":"74.91.48.0","end":"74.91.63.255","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":"2026-10-13T23:57:01+00:00","page":"https://rirtracker.com/ip/74.91.48.0-74.91.63.255/#e-d98ae361d48571c5","report_page":"https://rirtracker.com/arin/reports/2012-02-28/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/74.91.48.0-74.91.63.255.json","observed":"74.91.48.0/20 allocated on 2012-02-28, not listed on 2012-02-29","hold":{"hold_rule_source_url":"https://www.arin.net/resources/guide/request/#reissuing-returned-revoked-and-reclaimed-resources","hold_rule_days":60,"estimated_hold_end":"2012-04-28","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 allocated (dated 2011-04-07) on 2012-02-27 and not issued on 2012-02-29. (Until 2013-03-05, ARIN's statistics list only what's issued.) Public sources do not distinguish a voluntary return, revocation, or reclamation. ARIN holds returned, revoked and reclaimed IPv4 space for 60 days before reissuing it, so the estimated hold end is 2012-04-28. This does not confirm availability.","evidence":[{"type":"statistics_diff","url":"https://ftp.arin.net/pub/stats/arin/archive/2012/delegated-arin-20120229.gz","retrieved_at":"2026-10-12T19:32:29+00:00","summary":"Not listed in ARIN-Issued; found by comparing ARIN's daily statistics: 74.91.48.0/20 allocated on 2012-02-28, not listed on 2012-02-29"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2012/delegated-arin-20120227.gz","retrieved_at":"2026-10-12T19:32:25+00:00","summary":"ARIN delegated statistics 2012-02-27, before the report: allocated (dated 2011-04-07)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2012/delegated-arin-20120229.gz","retrieved_at":"2026-10-12T19:32:29+00:00","summary":"ARIN delegated statistics 2012-02-29, after the report: not issued"}]},{"event_id":"5b9637f17313aa89","registry":"ARIN","report_date":"2011-04-07","source":"arin_issued","raw_action":"ADD","raw_line":"Add 74.91.48.0-74.91.63.255","resource_type":"ipv4","resource":"74.91.48.0/20","start":"74.91.48.0","end":"74.91.63.255","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":"2026-10-13T23:50:53+00:00","page":"https://rirtracker.com/ip/74.91.48.0-74.91.63.255/#e-5b9637f17313aa89","report_page":"https://rirtracker.com/arin/reports/2011-04-07/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/74.91.48.0-74.91.63.255.json","explanation":"No transfer record matches. ARIN's statistics show it not issued on 2011-04-06 and allocated (dated 2011-04-07) on 2011-04-08. (Until 2013-03-05, ARIN's statistics list only what's issued.) 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/2011-April/000844.html","retrieved_at":"2026-10-12T18:37:04+00:00","summary":"ARIN-Issued report for 2011-04-07: \"Add 74.91.48.0-74.91.63.255\""},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2011/delegated-arin-20110406.gz","retrieved_at":"2026-10-12T19:18:31+00:00","summary":"ARIN delegated statistics 2011-04-06, before the report: not issued"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2011/delegated-arin-20110408.gz","retrieved_at":"2026-10-12T19:18:38+00:00","summary":"ARIN delegated statistics 2011-04-08, after the report: allocated (dated 2011-04-07)"}]}],"classification_history":{"86f3bec6f658101b":[{"raw_change_id":146116,"classification_code":"UNRESOLVED","confidence":"OBSERVED_ONLY","classifier_version":"1.3.0","classified_at":"2026-10-13T03:35:58+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it not listed on 2016-09-01 and allocated (dated 2016-09-02) on 2016-09-03. It wasn't in ARIN's statistics before, so it wasn't ARIN's unissued inventory; it may have come from another registry in a transfer not yet in the log."},{"raw_change_id":146116,"classification_code":"UNRESOLVED","confidence":"OBSERVED_ONLY","classifier_version":"1.3.1","classified_at":"2026-10-13T08:05:53+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it not listed on 2016-09-01 and allocated (dated 2016-09-02) on 2016-09-03. It wasn't in ARIN's statistics before, so it wasn't ARIN's unissued inventory; it may have come from another registry in a transfer not yet in the log."},{"raw_change_id":146116,"classification_code":"UNRESOLVED","confidence":"OBSERVED_ONLY","classifier_version":"1.3.2","classified_at":"2026-10-13T14:48:32+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it not listed on 2016-09-01 and allocated (dated 2016-09-02) on 2016-09-03. It wasn't in ARIN's statistics before, so it wasn't ARIN's unissued inventory; it may have come from another registry in a transfer not yet in the log."},{"raw_change_id":146116,"classification_code":"UNRESOLVED","confidence":"OBSERVED_ONLY","classifier_version":"1.4.0","classified_at":"2026-10-13T23:51:38+00:00","current":1,"public_explanation":"No transfer record matches. ARIN's statistics show it not listed on 2016-09-01 and allocated (dated 2016-09-02) on 2016-09-03. It wasn't in ARIN's statistics before, so it wasn't ARIN's unissued inventory; it may have come from another registry in a transfer not yet in the log."}],"d98ae361d48571c5":[{"raw_change_id":238619,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T04:24:33+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 allocated (dated 2011-04-07) on 2012-02-27 and not issued on 2012-02-29. (Until 2013-03-05, ARIN's statistics list only what's issued.) Public sources do not distinguish a voluntary return, revocation, or reclamation. ARIN holds returned, revoked and reclaimed IPv4 space for 60 days before reissuing it, so the earliest estimated hold expiration is 2012-04-28. This does not confirm availability."},{"raw_change_id":238619,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.1","classified_at":"2026-10-13T08:10:12+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 allocated (dated 2011-04-07) on 2012-02-27 and not issued on 2012-02-29. (Until 2013-03-05, ARIN's statistics list only what's issued.) Public sources do not distinguish a voluntary return, revocation, or reclamation. ARIN holds returned, revoked and reclaimed IPv4 space for 60 days before reissuing it, so the earliest estimated hold expiration is 2012-04-28. This does not confirm availability."},{"raw_change_id":238619,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.2","classified_at":"2026-10-13T14:53:18+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 allocated (dated 2011-04-07) on 2012-02-27 and not issued on 2012-02-29. (Until 2013-03-05, ARIN's statistics list only what's issued.) Public sources do not distinguish a voluntary return, revocation, or reclamation. ARIN holds returned, revoked and reclaimed IPv4 space for 60 days before reissuing it, so the earliest estimated hold expiration is 2012-04-28. This does not confirm availability."},{"raw_change_id":238619,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-13T23:57:01+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 allocated (dated 2011-04-07) on 2012-02-27 and not issued on 2012-02-29. (Until 2013-03-05, ARIN's statistics list only what's issued.) Public sources do not distinguish a voluntary return, revocation, or reclamation. ARIN holds returned, revoked and reclaimed IPv4 space for 60 days before reissuing it, so the estimated hold end is 2012-04-28. This does not confirm availability."}],"5b9637f17313aa89":[{"raw_change_id":123188,"classification_code":"APPARENT_NEW_ISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T03:13:43+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it not issued on 2011-04-06 and allocated (dated 2011-04-07) on 2011-04-08. (Until 2013-03-05, ARIN's statistics list only what's issued.) 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":123188,"classification_code":"APPARENT_NEW_ISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.1","classified_at":"2026-10-13T08:05:19+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it not issued on 2011-04-06 and allocated (dated 2011-04-07) on 2011-04-08. (Until 2013-03-05, ARIN's statistics list only what's issued.) 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":123188,"classification_code":"APPARENT_NEW_ISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.2","classified_at":"2026-10-13T14:47:53+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it not issued on 2011-04-06 and allocated (dated 2011-04-07) on 2011-04-08. (Until 2013-03-05, ARIN's statistics list only what's issued.) 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":123188,"classification_code":"APPARENT_NEW_ISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-13T23:50:53+00:00","current":1,"public_explanation":"No transfer record matches. ARIN's statistics show it not issued on 2011-04-06 and allocated (dated 2011-04-07) on 2011-04-08. (Until 2013-03-05, ARIN's statistics list only what's issued.) 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":"allocated (dated 2016-09-02)"}}