{"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":"198.199.52.0/22","resource_type":"ipv4","page":"https://rirtracker.com/ip/198.199.52.0-198.199.55.255/","statistics_now":{"registry":"ARIN","status":"allocated (dated 2012-10-09)"},"current_holder":{"rir":"ARIN","org":"Iron Mountain Data Center","how":"ARIN's latest statistics and the latest transfer record"},"rdap_snapshots":[],"transfers":[{"id":20079,"date":"2020-02-24T17:37:37Z","type":"MERGER_ACQUISITION","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"FORTRUST","recipient_org":"Iron Mountain Data Center","range":"198.199.52.0/22","log":"ARIN"}],"events":[{"event_id":"6f2458c00a73c28d","registry":"ARIN","report_date":"2020-02-24","source":"transfers","raw_action":"TRANSFER","raw_line":null,"resource_type":"ipv4","resource":"198.199.52.0/22","start":"198.199.52.0","end":"198.199.55.255","classification":"MERGER_ACQUISITION","classification_label":"Merger/acquisition or reorganization","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"ARIN","source_organization":"FORTRUST","recipient_organization":"Iron Mountain Data Center","inventory_effect":"No effect on ARIN applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-14T00:18:48+00:00","page":"https://rirtracker.com/ip/198.199.52.0-198.199.55.255/#e-6f2458c00a73c28d","report_page":"https://rirtracker.com/arin/reports/2020-02-24/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/198.199.52.0-198.199.55.255.json","observed":"Merger/acquisition: FORTRUST (ARIN) to Iron Mountain Data Center (ARIN)","explanation":"ARIN's transfer log records a merger, acquisition or reorganization from FORTRUST (ARIN) to Iron Mountain Data Center (ARIN) on 2020-02-24 17:37 UTC. The registration changed hands; it is not a new allocation from ARIN. ARIN-Issued and ARIN's statistics don't show this change; only the transfer log records it.","evidence":[{"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: MERGER_ACQUISITION on 2020-02-24 17:37 UTC, FORTRUST (ARIN) to Iron Mountain Data Center (ARIN); resources moved: 198.199.52.0/22"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2020/delegated-arin-extended-20200223.gz","retrieved_at":"2026-10-12T22:19:37+00:00","summary":"ARIN delegated statistics 2020-02-23 (produced 2020-02-23T15:00:13+00:00), before the report: allocated (dated 2012-10-09)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2020/delegated-arin-extended-20200225.gz","retrieved_at":"2026-10-12T22:19:42+00:00","summary":"ARIN delegated statistics 2020-02-25 (produced 2020-02-25T15:00:13+00:00), after the report: allocated (dated 2012-10-09)"}]},{"event_id":"612c06eb7250fbb2","registry":"ARIN","report_date":"2020-01-06","source":"statistics","raw_action":"NOT_IN_ARIN_ISSUED","raw_line":null,"resource_type":"ipv4","resource":"198.199.52.0/22","start":"198.199.52.0","end":"198.199.55.255","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":"2026-10-14T00:06:25+00:00","page":"https://rirtracker.com/ip/198.199.52.0-198.199.55.255/#e-612c06eb7250fbb2","report_page":"https://rirtracker.com/arin/reports/2020-01-06/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/198.199.52.0-198.199.55.255.json","observed":"198.199.52.0/22 allocated on 2020-01-06, reserved on 2020-01-07","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":"2020-03-06","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 2012-10-09) on 2020-01-05 and reserved on 2020-01-07. 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 2020-03-06. This does not confirm availability.","evidence":[{"type":"statistics_diff","url":"https://ftp.arin.net/pub/stats/arin/archive/2020/delegated-arin-extended-20200107.gz","retrieved_at":"2026-10-12T22:17:15+00:00","summary":"Not listed in ARIN-Issued; found by comparing ARIN's daily statistics: 198.199.52.0/22 allocated on 2020-01-06, reserved on 2020-01-07"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2020/delegated-arin-extended-20200105.gz","retrieved_at":"2026-10-12T22:17:10+00:00","summary":"ARIN delegated statistics 2020-01-05 (produced 2020-01-05T15:00:09+00:00), before the report: allocated (dated 2012-10-09)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2020/delegated-arin-extended-20200107.gz","retrieved_at":"2026-10-12T22:17:15+00:00","summary":"ARIN delegated statistics 2020-01-07 (produced 2020-01-07T15:00:09+00:00), after the report: reserved"}]},{"event_id":"17344349b42ad1c7","registry":"ARIN","report_date":"2012-10-09","source":"arin_issued","raw_action":"ADD","raw_line":"Add 198.199.52.0-198.199.55.255","resource_type":"ipv4","resource":"198.199.52.0/22","start":"198.199.52.0","end":"198.199.55.255","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":"2026-10-13T23:51:01+00:00","page":"https://rirtracker.com/ip/198.199.52.0-198.199.55.255/#e-17344349b42ad1c7","report_page":"https://rirtracker.com/arin/reports/2012-10-09/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/198.199.52.0-198.199.55.255.json","explanation":"No transfer record matches. ARIN's statistics show it not issued on 2012-10-08 and allocated (dated 2012-10-09) on 2012-10-10. (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/2012-October/001398.html","retrieved_at":"2026-10-12T18:37:42+00:00","summary":"ARIN-Issued report for 2012-10-09: \"Add 198.199.52.0-198.199.55.255\""},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2012/delegated-arin-20121008.gz","retrieved_at":"2026-10-12T19:49:31+00:00","summary":"ARIN delegated statistics 2012-10-08, before the report: not issued"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2012/delegated-arin-20121010.gz","retrieved_at":"2026-10-12T19:49:35+00:00","summary":"ARIN delegated statistics 2012-10-10, after the report: allocated (dated 2012-10-09)"}]}],"classification_history":{"6f2458c00a73c28d":[{"raw_change_id":560078,"classification_code":"MERGER_ACQUISITION","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-14T00:18:48+00:00","current":1,"public_explanation":"ARIN's transfer log records a merger, acquisition or reorganization from FORTRUST (ARIN) to Iron Mountain Data Center (ARIN) on 2020-02-24 17:37 UTC. The registration changed hands; it is not a new allocation from ARIN. ARIN-Issued and ARIN's statistics don't show this change; only the transfer log records it."}],"612c06eb7250fbb2":[{"raw_change_id":387028,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T05:33:58+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 2012-10-09) on 2020-01-05 and reserved on 2020-01-07. 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 2020-03-06. This does not confirm availability."},{"raw_change_id":387028,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.1","classified_at":"2026-10-13T08:18:12+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 2012-10-09) on 2020-01-05 and reserved on 2020-01-07. 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 2020-03-06. This does not confirm availability."},{"raw_change_id":387028,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.2","classified_at":"2026-10-13T15:01:56+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 2012-10-09) on 2020-01-05 and reserved on 2020-01-07. 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 2020-03-06. This does not confirm availability."},{"raw_change_id":387028,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-14T00:06:25+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 2012-10-09) on 2020-01-05 and reserved on 2020-01-07. 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 2020-03-06. This does not confirm availability."}],"17344349b42ad1c7":[{"raw_change_id":127206,"classification_code":"APPARENT_REISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T03:18:32+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it not issued on 2012-10-08 and allocated (dated 2012-10-09) on 2012-10-10. (Until 2013-03-05, ARIN's statistics list only what's issued.) The tracker saw this range released from hold on 2011-06-06 (69.57.208.0-216.250.127.255), so it appears to have been issued again from ARIN's pool."},{"raw_change_id":127206,"classification_code":"APPARENT_REISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.1","classified_at":"2026-10-13T08:05:26+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it not issued on 2012-10-08 and allocated (dated 2012-10-09) on 2012-10-10. (Until 2013-03-05, ARIN's statistics list only what's issued.) The tracker saw this range released from hold on 2011-06-06 (69.57.208.0-216.250.127.255), so it appears to have been issued again from ARIN's pool."},{"raw_change_id":127206,"classification_code":"APPARENT_NEW_ISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.2","classified_at":"2026-10-13T14:48:00+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it not issued on 2012-10-08 and allocated (dated 2012-10-09) on 2012-10-10. (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":127206,"classification_code":"APPARENT_NEW_ISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-13T23:51:01+00:00","current":1,"public_explanation":"No transfer record matches. ARIN's statistics show it not issued on 2012-10-08 and allocated (dated 2012-10-09) on 2012-10-10. (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 2012-10-09)"}}