{"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":"161.220.0.0/16","resource_type":"ipv4","page":"https://rirtracker.com/ip/161.220.0.0-161.220.255.255/","statistics_now":{"registry":"RIPE NCC","status":"allocated (dated 2021-04-13)"},"current_holder":{"rir":"RIPE NCC","org":"Microsoft Limited [ORG-MA42-RIPE]","how":"The RIPE NCC's latest statistics and the latest transfer record"},"rdap_snapshots":[],"transfers":[{"id":103676,"date":"2024-03-11T19:00:00Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"RIPE NCC","source_org":null,"recipient_org":"Microsoft Limited","range":"161.220.0.0/16","log":"RIPE NCC"},{"id":34850,"date":"2024-03-11T15:09:41Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"RIPE NCC","source_org":"The J. M. Smucker Co.","recipient_org":"Microsoft Limited [ORG-MA42-RIPE]","range":"161.220.0.0/16","log":"ARIN"}],"events":[{"event_id":"19d5e26d0d4c6d2e","registry":"ARIN","report_date":"2024-03-11","source":"statistics","raw_action":"NOT_IN_ARIN_ISSUED","raw_line":null,"resource_type":"ipv4","resource":"161.220.0.0/16","start":"161.220.0.0","end":"161.220.255.255","classification":"INTER_RIR_TRANSFER_OUT","classification_label":"Inter-RIR transfer out of ARIN","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"RIPE NCC","source_organization":"The J. M. Smucker Co.","recipient_organization":"Microsoft Limited [ORG-MA42-RIPE]","inventory_effect":"Transferred out of ARIN administration; not offered to ARIN applicants","inventory_effect_code":"TRANSFER_OUT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-14T00:11:45+00:00","page":"https://rirtracker.com/ip/161.220.0.0-161.220.255.255/#e-19d5e26d0d4c6d2e","report_page":"https://rirtracker.com/arin/reports/2024-03-11/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/161.220.0.0-161.220.255.255.json","observed":"161.220.0.0/16 allocated on 2024-03-11, not listed on 2024-03-12","same_transfer_as":"6b072ffdbf336ef9","explanation":"ARIN's transfer log records a transfer from The J. M. Smucker Co. (ARIN) to Microsoft Limited [ORG-MA42-RIPE] (RIPE NCC) on 2024-03-11 15:09 UTC: it left ARIN for the RIPE NCC. ARIN-Issued didn't list this change; it is not a new allocation and is not offered to ARIN applicants.","evidence":[{"type":"statistics_diff","url":"https://ftp.arin.net/pub/stats/arin/archive/2024/delegated-arin-extended-20240312.gz","retrieved_at":"2026-10-12T23:36:41+00:00","summary":"Not listed in ARIN-Issued; found by comparing ARIN's daily statistics: 161.220.0.0/16 allocated on 2024-03-11, not listed on 2024-03-12"},{"type":"transfer","url":"https://ftp.arin.net/pub/stats/arin/transfers/transfers_latest.json","retrieved_at":"2026-10-13T13:57:20+00:00","summary":"Transfer log: RESOURCE_TRANSFER on 2024-03-11 15:09 UTC, The J. M. Smucker Co. (ARIN) to Microsoft Limited [ORG-MA42-RIPE] (RIPE NCC); resources moved: 161.220.0.0/16"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2024/delegated-arin-extended-20240310.gz","retrieved_at":"2026-10-12T23:36:36+00:00","summary":"ARIN delegated statistics 2024-03-10 (produced 2024-03-10T13:00:44+00:00), before the report: allocated (dated 2021-04-13)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2024/delegated-arin-extended-20240312.gz","retrieved_at":"2026-10-12T23:36:41+00:00","summary":"ARIN delegated statistics 2024-03-12 (produced 2024-03-12T13:00:43+00:00), after the report: not listed"}]},{"event_id":"6b072ffdbf336ef9","registry":"RIPE NCC","report_date":"2024-03-11","source":"transfers","raw_action":"TRANSFER","raw_line":null,"resource_type":"ipv4","resource":"161.220.0.0/16","start":"161.220.0.0","end":"161.220.255.255","classification":"INTER_RIR_TRANSFER_IN","classification_label":"Inter-RIR transfer into the RIPE NCC","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"RIPE NCC","source_organization":null,"recipient_organization":"Microsoft Limited","inventory_effect":"Transferred into RIPE NCC administration; not a new issuance","inventory_effect_code":"TRANSFER_IN","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-13T23:49:57+00:00","page":"https://rirtracker.com/ip/161.220.0.0-161.220.255.255/#e-6b072ffdbf336ef9","report_page":"https://rirtracker.com/ripe/reports/2024-03-11/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/161.220.0.0-161.220.255.255.json","observed":"Transfer: (no name) (ARIN) to Microsoft Limited (RIPE NCC)","same_transfer_as":"19d5e26d0d4c6d2e","explanation":"The RIPE NCC's transfer log records a transfer from an unnamed organization (ARIN) to Microsoft Limited (RIPE NCC) on 2024-03-11 19:00 UTC: it came to the RIPE NCC from ARIN. It was already issued by another registry, so this is not a new issuance.","evidence":[{"type":"transfer","url":"https://ftp.ripe.net/pub/stats/ripencc/transfers/transfers_latest.json","retrieved_at":"2026-10-13T21:49:37+00:00","summary":"Transfer log: RESOURCE_TRANSFER on 2024-03-11 19:00 UTC, (no name) (ARIN) to Microsoft Limited (RIPE NCC); resources moved: 161.220.0.0/16"},{"type":"delegated_before","url":"https://ftp.ripe.net/pub/stats/ripencc/2024/delegated-ripencc-extended-20240310.bz2","retrieved_at":"2026-10-13T00:25:18+00:00","summary":"RIPE NCC delegated statistics 2024-03-10 (produced 2024-03-10T22:59:59+00:00), before the change: not listed"},{"type":"delegated_after","url":"https://ftp.ripe.net/pub/stats/ripencc/2024/delegated-ripencc-extended-20240311.bz2","retrieved_at":"2026-10-13T00:25:21+00:00","summary":"RIPE NCC delegated statistics 2024-03-11 (produced 2024-03-11T22:59:59+00:00), after the change: allocated (dated 2021-04-13)"}]},{"event_id":"dee2ab08ff73a440","registry":"ARIN","report_date":"2021-04-13","source":"arin_issued","raw_action":"ADD","raw_line":"Add 161.220.0.0-161.220.255.255","resource_type":"ipv4","resource":"161.220.0.0/16","start":"161.220.0.0","end":"161.220.255.255","classification":"APPARENT_REISSUANCE","classification_label":"Apparent reissuance of previously removed resource","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":"2026-10-13T23:53:07+00:00","page":"https://rirtracker.com/ip/161.220.0.0-161.220.255.255/#e-dee2ab08ff73a440","report_page":"https://rirtracker.com/arin/reports/2021-04-13/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/161.220.0.0-161.220.255.255.json","explanation":"No transfer record matches. ARIN's statistics show it reserved on 2021-04-12 and assigned (dated 2021-04-13) on 2021-04-14. The tracker saw this range removed from registration on 2020-03-09 (161.220.0.0/16), so it appears to have been issued again from ARIN's pool.","evidence":[{"type":"arin_issued","url":"https://lists.arin.net/pipermail/arin-issued/2021-April/004505.html","retrieved_at":"2026-10-12T18:41:17+00:00","summary":"ARIN-Issued report for 2021-04-13: \"Add 161.220.0.0-161.220.255.255\""},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2021/delegated-arin-extended-20210412.gz","retrieved_at":"2026-10-12T22:41:09+00:00","summary":"ARIN delegated statistics 2021-04-12 (produced 2021-04-12T14:00:13+00:00), before the report: reserved"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2021/delegated-arin-extended-20210414.gz","retrieved_at":"2026-10-12T22:41:14+00:00","summary":"ARIN delegated statistics 2021-04-14 (produced 2021-04-14T14:00:14+00:00), after the report: assigned (dated 2021-04-13)"}]},{"event_id":"4110bbffb7f28262","registry":"ARIN","report_date":"2021-04-13","source":"arin_issued","raw_action":"REMOVE","raw_line":"Remove 161.220.0.0-161.220.255.255","resource_type":"ipv4","resource":"161.220.0.0/16","start":"161.220.0.0","end":"161.220.255.255","classification":"POOL_RECORD_CHANGE","classification_label":"Change to ARIN's own pool record","confidence":"STRONG_INFERENCE","source_rir":null,"recipient_rir":null,"source_organization":null,"recipient_organization":null,"inventory_effect":"Part of the issuance reported the same day","inventory_effect_code":"PAIRED","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-13T23:53:07+00:00","page":"https://rirtracker.com/ip/161.220.0.0-161.220.255.255/#e-4110bbffb7f28262","report_page":"https://rirtracker.com/arin/reports/2021-04-13/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/161.220.0.0-161.220.255.255.json","explanation":"ARIN's statistics show it reserved on 2021-04-12 and assigned (dated 2021-04-13) on 2021-04-14. ARIN removed its own pool record for this range as part of issuing it: the same report adds 161.220.0.0-161.220.255.255. The issuance is explained on that line.","evidence":[{"type":"arin_issued","url":"https://lists.arin.net/pipermail/arin-issued/2021-April/004505.html","retrieved_at":"2026-10-12T18:41:17+00:00","summary":"ARIN-Issued report for 2021-04-13: \"Remove 161.220.0.0-161.220.255.255\""},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2021/delegated-arin-extended-20210412.gz","retrieved_at":"2026-10-12T22:41:09+00:00","summary":"ARIN delegated statistics 2021-04-12 (produced 2021-04-12T14:00:13+00:00), before the report: reserved"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2021/delegated-arin-extended-20210414.gz","retrieved_at":"2026-10-12T22:41:14+00:00","summary":"ARIN delegated statistics 2021-04-14 (produced 2021-04-14T14:00:14+00:00), after the report: assigned (dated 2021-04-13)"}]},{"event_id":"fbdc98e0055710d8","registry":"ARIN","report_date":"2020-03-09","source":"statistics","raw_action":"NOT_IN_ARIN_ISSUED","raw_line":null,"resource_type":"ipv4","resource":"161.220.0.0/16","start":"161.220.0.0","end":"161.220.255.255","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":"2026-10-14T00:06:39+00:00","page":"https://rirtracker.com/ip/161.220.0.0-161.220.255.255/#e-fbdc98e0055710d8","report_page":"https://rirtracker.com/arin/reports/2020-03-09/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/161.220.0.0-161.220.255.255.json","observed":"161.220.0.0/16 assigned on 2020-03-09, reserved on 2020-03-10","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":"2020-05-08","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 1993-03-01) on 2020-03-08 and reserved on 2020-03-10. 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 2020-05-08. This does not confirm availability.","evidence":[{"type":"statistics_diff","url":"https://ftp.arin.net/pub/stats/arin/archive/2020/delegated-arin-extended-20200310.gz","retrieved_at":"2026-10-12T22:20:26+00:00","summary":"Not listed in ARIN-Issued; found by comparing ARIN's daily statistics: 161.220.0.0/16 assigned on 2020-03-09, reserved on 2020-03-10"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2020/delegated-arin-extended-20200308.gz","retrieved_at":"2026-10-12T22:20:21+00:00","summary":"ARIN delegated statistics 2020-03-08 (produced 2020-03-08T14:00:12+00:00), before the report: assigned (dated 1993-03-01)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2020/delegated-arin-extended-20200310.gz","retrieved_at":"2026-10-12T22:20:26+00:00","summary":"ARIN delegated statistics 2020-03-10 (produced 2020-03-10T14:00:13+00:00), after the report: reserved"}]}],"classification_history":{"19d5e26d0d4c6d2e":[{"raw_change_id":462749,"classification_code":"INTER_RIR_TRANSFER_OUT","confidence":"CONFIRMED","classifier_version":"1.3.0","classified_at":"2026-10-13T06:06:50+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from The J. M. Smucker Co. (ARIN) to Microsoft Limited [ORG-MA42-RIPE] (RIPE NCC) on 2024-03-11 15:09 UTC: it left ARIN for the RIPE NCC. ARIN-Issued didn't list this change; it is not a new allocation and is not offered to ARIN applicants."},{"raw_change_id":462749,"classification_code":"INTER_RIR_TRANSFER_OUT","confidence":"CONFIRMED","classifier_version":"1.3.1","classified_at":"2026-10-13T08:22:34+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from The J. M. Smucker Co. (ARIN) to Microsoft Limited [ORG-MA42-RIPE] (RIPE NCC) on 2024-03-11 15:09 UTC: it left ARIN for the RIPE NCC. ARIN-Issued didn't list this change; it is not a new allocation and is not offered to ARIN applicants."},{"raw_change_id":462749,"classification_code":"INTER_RIR_TRANSFER_OUT","confidence":"CONFIRMED","classifier_version":"1.3.2","classified_at":"2026-10-13T15:06:38+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from The J. M. Smucker Co. (ARIN) to Microsoft Limited [ORG-MA42-RIPE] (RIPE NCC) on 2024-03-11 15:09 UTC: it left ARIN for the RIPE NCC. ARIN-Issued didn't list this change; it is not a new allocation and is not offered to ARIN applicants."},{"raw_change_id":462749,"classification_code":"INTER_RIR_TRANSFER_OUT","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-14T00:11:45+00:00","current":1,"public_explanation":"ARIN's transfer log records a transfer from The J. M. Smucker Co. (ARIN) to Microsoft Limited [ORG-MA42-RIPE] (RIPE NCC) on 2024-03-11 15:09 UTC: it left ARIN for the RIPE NCC. ARIN-Issued didn't list this change; it is not a new allocation and is not offered to ARIN applicants."}],"6b072ffdbf336ef9":[{"raw_change_id":104236,"classification_code":"INTER_RIR_TRANSFER_IN","confidence":"CONFIRMED","classifier_version":"1.3.0","classified_at":"2026-10-13T03:04:31+00:00","current":0,"public_explanation":"The RIPE NCC's transfer log records a transfer from an unnamed organization (ARIN) to Microsoft Limited (RIPE NCC) on 2024-03-11 19:00 UTC: it came to the RIPE NCC from ARIN. It was already issued by another registry, so this is not a new issuance."},{"raw_change_id":104236,"classification_code":"INTER_RIR_TRANSFER_IN","confidence":"CONFIRMED","classifier_version":"1.3.1","classified_at":"2026-10-13T08:04:36+00:00","current":0,"public_explanation":"The RIPE NCC's transfer log records a transfer from an unnamed organization (ARIN) to Microsoft Limited (RIPE NCC) on 2024-03-11 19:00 UTC: it came to the RIPE NCC from ARIN. It was already issued by another registry, so this is not a new issuance."},{"raw_change_id":104236,"classification_code":"INTER_RIR_TRANSFER_IN","confidence":"CONFIRMED","classifier_version":"1.3.2","classified_at":"2026-10-13T14:47:05+00:00","current":0,"public_explanation":"The RIPE NCC's transfer log records a transfer from an unnamed organization (ARIN) to Microsoft Limited (RIPE NCC) on 2024-03-11 19:00 UTC: it came to the RIPE NCC from ARIN. It was already issued by another registry, so this is not a new issuance."},{"raw_change_id":104236,"classification_code":"INTER_RIR_TRANSFER_IN","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-13T23:49:57+00:00","current":1,"public_explanation":"The RIPE NCC's transfer log records a transfer from an unnamed organization (ARIN) to Microsoft Limited (RIPE NCC) on 2024-03-11 19:00 UTC: it came to the RIPE NCC from ARIN. It was already issued by another registry, so this is not a new issuance."}],"dee2ab08ff73a440":[{"raw_change_id":170941,"classification_code":"APPARENT_REISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T03:52:08+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it reserved on 2021-04-12 and assigned (dated 2021-04-13) on 2021-04-14. The tracker saw this range removed from registration on 2020-03-09 (161.220.0.0/16), so it appears to have been issued again from ARIN's pool."},{"raw_change_id":170941,"classification_code":"APPARENT_REISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.1","classified_at":"2026-10-13T08:07:01+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it reserved on 2021-04-12 and assigned (dated 2021-04-13) on 2021-04-14. The tracker saw this range removed from registration on 2020-03-09 (161.220.0.0/16), so it appears to have been issued again from ARIN's pool."},{"raw_change_id":170941,"classification_code":"APPARENT_REISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.2","classified_at":"2026-10-13T14:49:47+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it reserved on 2021-04-12 and assigned (dated 2021-04-13) on 2021-04-14. The tracker saw this range removed from registration on 2020-03-09 (161.220.0.0/16), so it appears to have been issued again from ARIN's pool."},{"raw_change_id":170941,"classification_code":"APPARENT_REISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-13T23:53:07+00:00","current":1,"public_explanation":"No transfer record matches. ARIN's statistics show it reserved on 2021-04-12 and assigned (dated 2021-04-13) on 2021-04-14. The tracker saw this range removed from registration on 2020-03-09 (161.220.0.0/16), so it appears to have been issued again from ARIN's pool."}],"4110bbffb7f28262":[{"raw_change_id":170930,"classification_code":"POOL_RECORD_CHANGE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T03:52:07+00:00","current":0,"public_explanation":"ARIN's statistics show it reserved on 2021-04-12 and assigned (dated 2021-04-13) on 2021-04-14. ARIN removed its own pool record for this range as part of issuing it: the same report adds 161.220.0.0-161.220.255.255. The issuance is explained on that line."},{"raw_change_id":170930,"classification_code":"POOL_RECORD_CHANGE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.1","classified_at":"2026-10-13T08:07:01+00:00","current":0,"public_explanation":"ARIN's statistics show it reserved on 2021-04-12 and assigned (dated 2021-04-13) on 2021-04-14. ARIN removed its own pool record for this range as part of issuing it: the same report adds 161.220.0.0-161.220.255.255. The issuance is explained on that line."},{"raw_change_id":170930,"classification_code":"POOL_RECORD_CHANGE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.2","classified_at":"2026-10-13T14:49:47+00:00","current":0,"public_explanation":"ARIN's statistics show it reserved on 2021-04-12 and assigned (dated 2021-04-13) on 2021-04-14. ARIN removed its own pool record for this range as part of issuing it: the same report adds 161.220.0.0-161.220.255.255. The issuance is explained on that line."},{"raw_change_id":170930,"classification_code":"POOL_RECORD_CHANGE","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-13T23:53:07+00:00","current":1,"public_explanation":"ARIN's statistics show it reserved on 2021-04-12 and assigned (dated 2021-04-13) on 2021-04-14. ARIN removed its own pool record for this range as part of issuing it: the same report adds 161.220.0.0-161.220.255.255. The issuance is explained on that line."}],"fbdc98e0055710d8":[{"raw_change_id":390900,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T05:35:11+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 1993-03-01) on 2020-03-08 and reserved on 2020-03-10. 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 2020-05-08. This does not confirm availability."},{"raw_change_id":390900,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.1","classified_at":"2026-10-13T08:18:24+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 1993-03-01) on 2020-03-08 and reserved on 2020-03-10. 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 2020-05-08. This does not confirm availability."},{"raw_change_id":390900,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.2","classified_at":"2026-10-13T15:02:09+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 1993-03-01) on 2020-03-08 and reserved on 2020-03-10. 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 2020-05-08. This does not confirm availability."},{"raw_change_id":390900,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-14T00:06:39+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 1993-03-01) on 2020-03-08 and reserved on 2020-03-10. 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 2020-05-08. This does not confirm availability."}]},"arin_statistics_now":{"status":"not listed"}}