{"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":"172.83.81.0/24","resource_type":"ipv4","page":"https://rirtracker.com/ip/172.83.81.0-172.83.81.255/","statistics_now":{"registry":"RIPE NCC","status":"allocated (dated 2018-05-21)"},"current_holder":{"rir":"RIPE NCC","org":"incubatec GmbH - Srl","how":"The RIPE NCC's latest statistics and the latest transfer record"},"rdap_snapshots":[],"transfers":[{"id":85607,"date":"2022-02-15T19:00:00Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"RIPE NCC","source_org":null,"recipient_org":"INCUBATEC GmbH - Srl","range":"172.83.81.0/24","log":"RIPE NCC"},{"id":26939,"date":"2022-02-15T15:39:36Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"RIPE NCC","source_org":"HostCram LLC","recipient_org":"incubatec GmbH - Srl","range":"172.83.81.0/24","log":"ARIN"}],"events":[{"event_id":"f86423bbc70cb5af","registry":"ARIN","report_date":"2022-02-15","source":"statistics","raw_action":"NOT_IN_ARIN_ISSUED","raw_line":null,"resource_type":"ipv4","resource":"172.83.81.0/24","start":"172.83.81.0","end":"172.83.81.255","classification":"INTER_RIR_TRANSFER_OUT","classification_label":"Inter-RIR transfer out of ARIN","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"RIPE NCC","source_organization":"HostCram LLC","recipient_organization":"incubatec GmbH - Srl","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":"2026-10-14T00:09:03+00:00","page":"https://rirtracker.com/ip/172.83.81.0-172.83.81.255/#e-f86423bbc70cb5af","report_page":"https://rirtracker.com/arin/reports/2022-02-15/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/172.83.81.0-172.83.81.255.json","observed":"172.83.81.0/24 allocated on 2022-02-15, not listed on 2022-02-16","same_transfer_as":"c8d0e0d2a15b4655","explanation":"ARIN's transfer log records a transfer from HostCram LLC (ARIN) to incubatec GmbH - Srl (RIPE NCC) on 2022-02-15 15:39 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/2022/delegated-arin-extended-20220216.gz","retrieved_at":"2026-10-12T22:57:02+00:00","summary":"Not listed in ARIN-Issued; found by comparing ARIN's daily statistics: 172.83.81.0/24 allocated on 2022-02-15, not listed on 2022-02-16"},{"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 2022-02-15 15:39 UTC, HostCram LLC (ARIN) to incubatec GmbH - Srl (RIPE NCC); resources moved: 172.83.81.0/24"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2022/delegated-arin-extended-20220214.gz","retrieved_at":"2026-10-12T22:56:58+00:00","summary":"ARIN delegated statistics 2022-02-14 (produced 2022-02-14T14:00:11+00:00), before the report: allocated (dated 2018-05-21)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2022/delegated-arin-extended-20220216.gz","retrieved_at":"2026-10-12T22:57:02+00:00","summary":"ARIN delegated statistics 2022-02-16 (produced 2022-02-16T14:00:11+00:00), after the report: not listed"}]},{"event_id":"c8d0e0d2a15b4655","registry":"RIPE NCC","report_date":"2022-02-15","source":"transfers","raw_action":"TRANSFER","raw_line":null,"resource_type":"ipv4","resource":"172.83.81.0/24","start":"172.83.81.0","end":"172.83.81.255","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":"INCUBATEC GmbH - Srl","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":"2026-10-13T23:48:59+00:00","page":"https://rirtracker.com/ip/172.83.81.0-172.83.81.255/#e-c8d0e0d2a15b4655","report_page":"https://rirtracker.com/ripe/reports/2022-02-15/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/172.83.81.0-172.83.81.255.json","observed":"Transfer: (no name) (ARIN) to INCUBATEC GmbH - Srl (RIPE NCC)","same_transfer_as":"f86423bbc70cb5af","explanation":"The RIPE NCC's transfer log records a transfer from an unnamed organization (ARIN) to INCUBATEC GmbH - Srl (RIPE NCC) on 2022-02-15 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 2022-02-15 19:00 UTC, (no name) (ARIN) to INCUBATEC GmbH - Srl (RIPE NCC); resources moved: 172.83.81.0/24"},{"type":"delegated_before","url":"https://ftp.ripe.net/pub/stats/ripencc/2022/delegated-ripencc-extended-20220214.bz2","retrieved_at":"2026-10-12T23:28:10+00:00","summary":"RIPE NCC delegated statistics 2022-02-14 (produced 2022-02-14T22:59:00+00:00), before the change: not listed"},{"type":"delegated_after","url":"https://ftp.ripe.net/pub/stats/ripencc/2022/delegated-ripencc-extended-20220215.bz2","retrieved_at":"2026-10-12T23:28:36+00:00","summary":"RIPE NCC delegated statistics 2022-02-15 (produced 2022-02-15T22:59:00+00:00), after the change: allocated (dated 2018-05-21)"}]},{"event_id":"4dfa72c31145390e","registry":"ARIN","report_date":"2018-05-21","source":"arin_issued","raw_action":"ADD","raw_line":"Add 172.83.81.0-172.83.81.255","resource_type":"ipv4","resource":"172.83.81.0/24","start":"172.83.81.0","end":"172.83.81.255","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":"2026-10-13T23:52:10+00:00","page":"https://rirtracker.com/ip/172.83.81.0-172.83.81.255/#e-4dfa72c31145390e","report_page":"https://rirtracker.com/arin/reports/2018-05-21/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/172.83.81.0-172.83.81.255.json","explanation":"No transfer record matches. ARIN's statistics show it reserved on 2018-05-20 and assigned (dated 2018-05-21) on 2018-05-22. 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/2018-May/003449.html","retrieved_at":"2026-10-12T18:40:03+00:00","summary":"ARIN-Issued report for 2018-05-21: \"Add 172.83.81.0-172.83.81.255\""},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2018/delegated-arin-extended-20180520.gz","retrieved_at":"2026-10-12T21:46:30+00:00","summary":"ARIN delegated statistics 2018-05-20 (produced 2018-05-20T05:00:22+00:00), before the report: reserved"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2018/delegated-arin-extended-20180522.gz","retrieved_at":"2026-10-12T21:46:35+00:00","summary":"ARIN delegated statistics 2018-05-22 (produced 2018-05-22T05:00:24+00:00), after the report: assigned (dated 2018-05-21)"}]},{"event_id":"6619de23caf5796c","registry":"ARIN","report_date":"2018-05-21","source":"arin_issued","raw_action":"REMOVE","raw_line":"Remove 172.83.81.0-172.83.81.255","resource_type":"ipv4","resource":"172.83.81.0/24","start":"172.83.81.0","end":"172.83.81.255","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":"2026-10-13T23:52:10+00:00","page":"https://rirtracker.com/ip/172.83.81.0-172.83.81.255/#e-6619de23caf5796c","report_page":"https://rirtracker.com/arin/reports/2018-05-21/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/172.83.81.0-172.83.81.255.json","explanation":"ARIN's statistics show it reserved on 2018-05-20 and assigned (dated 2018-05-21) on 2018-05-22. ARIN removed its own pool record for this range as part of issuing it: the same report adds 172.83.81.0-172.83.81.255. The issuance is explained on that line.","evidence":[{"type":"arin_issued","url":"https://lists.arin.net/pipermail/arin-issued/2018-May/003449.html","retrieved_at":"2026-10-12T18:40:03+00:00","summary":"ARIN-Issued report for 2018-05-21: \"Remove 172.83.81.0-172.83.81.255\""},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2018/delegated-arin-extended-20180520.gz","retrieved_at":"2026-10-12T21:46:30+00:00","summary":"ARIN delegated statistics 2018-05-20 (produced 2018-05-20T05:00:22+00:00), before the report: reserved"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2018/delegated-arin-extended-20180522.gz","retrieved_at":"2026-10-12T21:46:35+00:00","summary":"ARIN delegated statistics 2018-05-22 (produced 2018-05-22T05:00:24+00:00), after the report: assigned (dated 2018-05-21)"}]}],"classification_history":{"f86423bbc70cb5af":[{"raw_change_id":424837,"classification_code":"INTER_RIR_TRANSFER_OUT","confidence":"CONFIRMED","classifier_version":"1.3.0","classified_at":"2026-10-13T05:50:04+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from HostCram LLC (ARIN) to incubatec GmbH - Srl (RIPE NCC) on 2022-02-15 15:39 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":424837,"classification_code":"INTER_RIR_TRANSFER_OUT","confidence":"CONFIRMED","classifier_version":"1.3.1","classified_at":"2026-10-13T08:20:22+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from HostCram LLC (ARIN) to incubatec GmbH - Srl (RIPE NCC) on 2022-02-15 15:39 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":424837,"classification_code":"INTER_RIR_TRANSFER_OUT","confidence":"CONFIRMED","classifier_version":"1.3.2","classified_at":"2026-10-13T15:04:16+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from HostCram LLC (ARIN) to incubatec GmbH - Srl (RIPE NCC) on 2022-02-15 15:39 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":424837,"classification_code":"INTER_RIR_TRANSFER_OUT","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-14T00:09:03+00:00","current":1,"public_explanation":"ARIN's transfer log records a transfer from HostCram LLC (ARIN) to incubatec GmbH - Srl (RIPE NCC) on 2022-02-15 15:39 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."}],"c8d0e0d2a15b4655":[{"raw_change_id":85852,"classification_code":"INTER_RIR_TRANSFER_IN","confidence":"CONFIRMED","classifier_version":"1.3.0","classified_at":"2026-10-13T02:56:44+00:00","current":0,"public_explanation":"The RIPE NCC's transfer log records a transfer from an unnamed organization (ARIN) to INCUBATEC GmbH - Srl (RIPE NCC) on 2022-02-15 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":85852,"classification_code":"INTER_RIR_TRANSFER_IN","confidence":"CONFIRMED","classifier_version":"1.3.1","classified_at":"2026-10-13T08:03:50+00:00","current":0,"public_explanation":"The RIPE NCC's transfer log records a transfer from an unnamed organization (ARIN) to INCUBATEC GmbH - Srl (RIPE NCC) on 2022-02-15 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":85852,"classification_code":"INTER_RIR_TRANSFER_IN","confidence":"CONFIRMED","classifier_version":"1.3.2","classified_at":"2026-10-13T14:46:14+00:00","current":0,"public_explanation":"The RIPE NCC's transfer log records a transfer from an unnamed organization (ARIN) to INCUBATEC GmbH - Srl (RIPE NCC) on 2022-02-15 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":85852,"classification_code":"INTER_RIR_TRANSFER_IN","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-13T23:48:59+00:00","current":1,"public_explanation":"The RIPE NCC's transfer log records a transfer from an unnamed organization (ARIN) to INCUBATEC GmbH - Srl (RIPE NCC) on 2022-02-15 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."}],"4dfa72c31145390e":[{"raw_change_id":154631,"classification_code":"APPARENT_REISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T03:41:16+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it reserved on 2018-05-20 and assigned (dated 2018-05-21) on 2018-05-22. The tracker saw this range released from hold on 2018-05-10 (172.83.80.0-172.83.83.255), so it appears to have been issued again from ARIN's pool."},{"raw_change_id":154631,"classification_code":"APPARENT_REISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.1","classified_at":"2026-10-13T08:06:17+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it reserved on 2018-05-20 and assigned (dated 2018-05-21) on 2018-05-22. The tracker saw this range released from hold on 2018-05-10 (172.83.80.0-172.83.83.255), so it appears to have been issued again from ARIN's pool."},{"raw_change_id":154631,"classification_code":"APPARENT_REISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.2","classified_at":"2026-10-13T14:48:58+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it reserved on 2018-05-20 and assigned (dated 2018-05-21) on 2018-05-22. The tracker saw this range released from hold on 2018-05-10 (172.83.80.0-172.83.83.255), so it appears to have been issued again from ARIN's pool."},{"raw_change_id":154631,"classification_code":"APPARENT_NEW_ISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-13T23:52:10+00:00","current":1,"public_explanation":"No transfer record matches. ARIN's statistics show it reserved on 2018-05-20 and assigned (dated 2018-05-21) on 2018-05-22. It moved from ARIN's unissued pool to an active registration dated around the report, so it appears to be newly issued by ARIN."}],"6619de23caf5796c":[{"raw_change_id":154626,"classification_code":"POOL_RECORD_CHANGE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T03:41:16+00:00","current":0,"public_explanation":"ARIN's statistics show it reserved on 2018-05-20 and assigned (dated 2018-05-21) on 2018-05-22. ARIN removed its own pool record for this range as part of issuing it: the same report adds 172.83.81.0-172.83.81.255. The issuance is explained on that line."},{"raw_change_id":154626,"classification_code":"POOL_RECORD_CHANGE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.1","classified_at":"2026-10-13T08:06:17+00:00","current":0,"public_explanation":"ARIN's statistics show it reserved on 2018-05-20 and assigned (dated 2018-05-21) on 2018-05-22. ARIN removed its own pool record for this range as part of issuing it: the same report adds 172.83.81.0-172.83.81.255. The issuance is explained on that line."},{"raw_change_id":154626,"classification_code":"POOL_RECORD_CHANGE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.2","classified_at":"2026-10-13T14:48:58+00:00","current":0,"public_explanation":"ARIN's statistics show it reserved on 2018-05-20 and assigned (dated 2018-05-21) on 2018-05-22. ARIN removed its own pool record for this range as part of issuing it: the same report adds 172.83.81.0-172.83.81.255. The issuance is explained on that line."},{"raw_change_id":154626,"classification_code":"POOL_RECORD_CHANGE","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-13T23:52:10+00:00","current":1,"public_explanation":"ARIN's statistics show it reserved on 2018-05-20 and assigned (dated 2018-05-21) on 2018-05-22. ARIN removed its own pool record for this range as part of issuing it: the same report adds 172.83.81.0-172.83.81.255. The issuance is explained on that line."}]},"arin_statistics_now":{"status":"not listed"}}