This is an automated weekly mailing describing the state of the IPv4 Research & Education Routing Table received by NSRC's collector from AARNET (Seattle)'s network. Daily listings are sent to ren-bgp-stats-all@lists.nsrc.org. For historical data, please see https://bgp.nsrc.org. If you have any comments please contact Philip Smith . IPv4 R&E Routing Table Report 21:00 GMT Sat 19 Mar, 2022 BGP Table (R&E) as seen at AARNET (Seattle). Report Website: https://bgp.nsrc.org/REN Detailed Analysis: https://bgp.nsrc.org/REN/AARNET-Seattle/ Analysis Summary ---------------- BGP routing table entries examined: 17622 Prefixes after maximum aggregation (per Origin AS): 9914 Deaggregation factor: 1.78 Unique aggregates announced (without unneeded subnets): 10998 Number of IPv4 prefixes with a valid ROA: 3523 Number of IPv4 prefixes with an invalid ROA: 15 Number of IPv4 prefixes with no ROA: 14084 Total ASes present in the Internet Routing Table: 2613 Prefixes per ASN: 6.74 Origin-only ASes present in the Internet Routing Table: 2250 Origin ASes announcing only one prefix: 1029 Transit ASes present in the Internet Routing Table: 363 Transit-only ASes present in the Internet Routing Table: 55 Average AS path length visible in the Internet Routing Table: 4.3 Max AS path length visible: 16 Max AS path prepend of ASN (211089) 11 Prefixes from unregistered ASNs in the Routing Table: 5 Number of instances of unregistered ASNs: 5 Number of 32-bit ASNs allocated by the RIRs: 38829 Number of 32-bit ASNs visible in the Routing Table: 558 Prefixes from 32-bit ASNs in the Routing Table: 1553 Number of bogon 32-bit ASNs visible in the Routing Table: 0 Special use prefixes present in the Routing Table: 1 Prefixes being announced from unallocated address space: 2 Number of addresses announced to Internet: 199715072 Equivalent to 11 /8s, 231 /16s and 105 /24s Percentage of available address space announced: 5.4 Percentage of allocated address space announced: 5.4 Percentage of available address space allocated: 100.0 Percentage of address space in use by end-sites: 99.5 Total number of prefixes smaller than registry allocations: 1883 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 4160 Total APNIC prefixes after maximum aggregation: 1925 APNIC Deaggregation factor: 2.16 Prefixes being announced from the APNIC address blocks: 4162 Unique aggregates announced from the APNIC address blocks: 2180 APNIC Region origin ASes present in the Internet Routing Table: 483 APNIC Prefixes per ASN: 8.62 APNIC Region origin ASes announcing only one prefix: 196 APNIC Region transit ASes present in the Internet Routing Table: 58 Average APNIC Region AS path length visible: 4.6 Max APNIC Region AS path length visible: 16 Number of APNIC region 32-bit ASNs visible in the Routing Table: 171 Number of APNIC addresses announced to Internet: 41513728 Equivalent to 2 /8s, 121 /16s and 115 /24s APNIC AS Blocks 4608-4864, 7467-7722, 9216-10239, 17408-18431 (pre-ERX allocations) 23552-24575, 37888-38911, 45056-46079, 55296-56319, 58368-59391, 63488-64098, 64297-64395, 131072-151865 APNIC Address Blocks 1/8, 14/8, 27/8, 36/8, 39/8, 42/8, 43/8, 49/8, 58/8, 59/8, 60/8, 61/8, 101/8, 103/8, 106/8, 110/8, 111/8, 112/8, 113/8, 114/8, 115/8, 116/8, 117/8, 118/8, 119/8, 120/8, 121/8, 122/8, 123/8, 124/8, 125/8, 126/8, 133/8, 150/8, 153/8, 163/8, 171/8, 175/8, 180/8, 182/8, 183/8, 202/8, 203/8, 210/8, 211/8, 218/8, 219/8, 220/8, 221/8, 222/8, 223/8, ARIN Region Analysis Summary ---------------------------- Prefixes being announced by ARIN Region ASes: 7776 Total ARIN prefixes after maximum aggregation: 4507 ARIN Deaggregation factor: 1.73 Prefixes being announced from the ARIN address blocks: 7793 Unique aggregates announced from the ARIN address blocks: 5043 ARIN Region origin ASes present in the Internet Routing Table: 1201 ARIN Prefixes per ASN: 6.49 ARIN Region origin ASes announcing only one prefix: 439 ARIN Region transit ASes present in the Internet Routing Table: 158 Average ARIN Region AS path length visible: 4.0 Max ARIN Region AS path length visible: 14 Number of ARIN region 32-bit ASNs visible in the Routing Table: 163 Number of ARIN addresses announced to Internet: 93879296 Equivalent to 5 /8s, 152 /16s and 124 /24s ARIN AS Blocks 1-1876, 1902-2042, 2044-2046, 2048-2106 (pre-ERX allocations) 2138-2584, 2615-2772, 2823-2829, 2880-3153 3354-4607, 4865-5119, 5632-6655, 6912-7466 7723-8191, 10240-12287, 13312-15359, 16384-17407 18432-20479, 21504-23551, 25600-26591, 26624-27647, 29696-30719, 31744-33791 35840-36863, 39936-40959, 46080-47103 53248-55295, 62464-63487, 64198-64296, 393216-401308 ARIN Address Blocks 3/8, 4/8, 6/8, 7/8, 8/8, 9/8, 11/8, 12/8, 13/8, 15/8, 16/8, 17/8, 18/8, 19/8, 20/8, 21/8, 22/8, 23/8, 24/8, 26/8, 28/8, 29/8, 30/8, 32/8, 33/8, 34/8, 35/8, 38/8, 40/8, 44/8, 47/8, 48/8, 50/8, 52/8, 53/8, 54/8, 55/8, 56/8, 57/8, 63/8, 64/8, 65/8, 66/8, 67/8, 68/8, 69/8, 70/8, 71/8, 72/8, 73/8, 74/8, 75/8, 76/8, 96/8, 97/8, 98/8, 99/8, 100/8, 104/8, 107/8, 108/8, 128/8, 129/8, 130/8, 131/8, 132/8, 134/8, 135/8, 136/8, 137/8, 138/8, 139/8, 140/8, 142/8, 143/8, 144/8, 146/8, 147/8, 148/8, 149/8, 152/8, 155/8, 156/8, 157/8, 158/8, 159/8, 160/8, 161/8, 162/8, 164/8, 165/8, 166/8, 167/8, 168/8, 169/8, 170/8, 172/8, 173/8, 174/8, 184/8, 192/8, 198/8, 199/8, 204/8, 205/8, 206/8, 207/8, 208/8, 209/8, 214/8, 215/8, 216/8, RIPE Region Analysis Summary ---------------------------- Prefixes being announced by RIPE Region ASes: 3357 Total RIPE prefixes after maximum aggregation: 2726 RIPE Deaggregation factor: 1.23 Prefixes being announced from the RIPE address blocks: 3343 Unique aggregates announced from the RIPE address blocks: 2718 RIPE Region origin ASes present in the Internet Routing Table: 653 RIPE Prefixes per ASN: 5.12 RIPE Region origin ASes announcing only one prefix: 304 RIPE Region transit ASes present in the Internet Routing Table: 97 Average RIPE Region AS path length visible: 4.7 Max RIPE Region AS path length visible: 16 Number of RIPE region 32-bit ASNs visible in the Routing Table: 131 Number of RIPE addresses announced to Internet: 57421824 Equivalent to 3 /8s, 108 /16s and 48 /24s RIPE AS Blocks 1877-1901, 2043, 2047, 2107-2136, 2585-2614 (pre-ERX allocations) 2773-2822, 2830-2879, 3154-3353, 5377-5631 6656-6911, 8192-9215, 12288-13311, 15360-16383 20480-21503, 24576-25599, 28672-29695 30720-31743, 33792-35839, 38912-39935 40960-45055, 47104-52223, 56320-58367 59392-61439, 61952-62463, 64396-64495 196608-213403 RIPE Address Blocks 2/8, 5/8, 25/8, 31/8, 37/8, 46/8, 51/8, 62/8, 77/8, 78/8, 79/8, 80/8, 81/8, 82/8, 83/8, 84/8, 85/8, 86/8, 87/8, 88/8, 89/8, 90/8, 91/8, 92/8, 93/8, 94/8, 95/8, 109/8, 141/8, 145/8, 151/8, 176/8, 178/8, 185/8, 188/8, 193/8, 194/8, 195/8, 212/8, 213/8, 217/8, LACNIC Region Analysis Summary ------------------------------ Prefixes being announced by LACNIC Region ASes: 1394 Total LACNIC prefixes after maximum aggregation: 561 LACNIC Deaggregation factor: 2.48 Prefixes being announced from the LACNIC address blocks: 1392 Unique aggregates announced from the LACNIC address blocks: 760 LACNIC Region origin ASes present in the Internet Routing Table: 163 LACNIC Prefixes per ASN: 8.54 LACNIC Region origin ASes announcing only one prefix: 66 LACNIC Region transit ASes present in the Internet Routing Table: 22 Average LACNIC Region AS path length visible: 5.1 Max LACNIC Region AS path length visible: 12 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 65 Number of LACNIC addresses announced to Internet: 4143104 Equivalent to 0 /8s, 63 /16s and 56 /24s LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247, 61440-61951, 64099-64197, 262144-273820 + ERX transfers LACNIC Address Blocks 177/8, 179/8, 181/8, 186/8, 187/8, 189/8, 190/8, 191/8, 200/8, 201/8, AfriNIC Region Analysis Summary ------------------------------- Prefixes being announced by AfriNIC Region ASes: 930 Total AfriNIC prefixes after maximum aggregation: 190 AfriNIC Deaggregation factor: 4.89 Prefixes being announced from the AfriNIC address blocks: 930 Unique aggregates announced from the AfriNIC address blocks: 295 AfriNIC Region origin ASes present in the Internet Routing Table: 53 AfriNIC Prefixes per ASN: 17.55 AfriNIC Region origin ASes announcing only one prefix: 24 AfriNIC Region transit ASes present in the Internet Routing Table: 14 Average AfriNIC Region AS path length visible: 3.8 Max AfriNIC Region AS path length visible: 10 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 28 Number of AfriNIC addresses announced to Internet: 2756608 Equivalent to 0 /8s, 42 /16s and 16 /24s AfriNIC AS Blocks 36864-37887, 327680-329727 & ERX transfers AfriNIC Address Blocks 41/8, 45/8, 102/8, 105/8, 154/8, 196/8, 197/8, APNIC Region per AS prefix count summary ---------------------------------------- ASN No of nets /20 equiv MaxAgg Description 2907 582 2124 457 SINET-AS Research Organization of Infor 7497 432 182 24 CSTNET-AS-AP Computer Network Informati 1237 186 74 135 KREONET-AS-KR KISTI, KR 58647 167 18 2 KAGAWAU-AS Kagawa University, JP 4538 128 4192 72 ERX-CERNET-BKB China Education and Rese 55824 128 18 22 NKN-CORE-NW NKN Core Network, IN 4621 79 37 10 UNINET-AS-AP UNINET-, TH 4762 65 4 1 MAHIDOL-BORDER-AS Mahidol University, T 23570 59 5 11 INCHEON-AS-KR UNIVERSITY OF INCHEON, KR 1659 54 1450 34 ERX-TANET-ASN1 Taiwan Academic Network Complete listing at https://bgp.nsrc.org/REN/AARNET-Seattle/data-ASnet-APNIC ARIN Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 7896 252 51 7 NU-AS, US 668 212 702 180 DNIC-AS-00668, US 376 203 178 152 RISQ-AS, CA 5786 200 16 1 UPRENET, PR 2152 145 507 86 CSUNET-NW, US 18558 135 18 4 NETBLK-RCOEK, US 2920 108 34 6 LACOE, US 21976 85 51 18 NJEDGE-NET, US 1736 80 16 1 MU-AS, US 3 77 496 15 MIT-GATEWAYS, US Complete listing at https://bgp.nsrc.org/REN/AARNET-Seattle/data-ASnet-ARIN RIPE Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 680 279 1967 245 DFN Verein zur Foerderung eines Deutsch 786 186 1774 183 JANET Jisc Services Limited, GB 8895 139 24 4 ISU Internet Services Unit ISU, SA 559 115 550 106 SWITCH Peering requests: peering@switch 1103 99 1520 86 SURFNET-NL SURFnet, The Netherlands, NL 137 82 677 77 ASGARR Consortium GARR, IT 553 73 449 73 BELWUE BelWue-Koordination, DE 2614 69 30 59 ROEDUNET, RO 2200 66 647 61 FR-RENATER Reseau National de telecommu 1930 58 81 53 RCCN Fundacao para a Ciencia e a Tecnol Complete listing at https://bgp.nsrc.org/REN/AARNET-Seattle/data-ASnet-RIPE LACNIC Region per AS prefix count summary ----------------------------------------- ASN No of nets /20 equiv MaxAgg Description 1916 158 208 45 Rede Nacional de Ensino e Pesquisa, BR 28391 152 10 66 Universidad Juarez Autonoma de Tabasco, 11340 95 24 54 Red Universitaria Nacional, CL 1251 60 37 20 FUNDACAO DE AMPARO A PESQUISA DO ESTADO 2715 58 102 38 Fundacao Carlos Chagas Filho de Amparo 19611 45 17 2 Associacao Antonio Vieira - Unisinos, B 4270 44 16 1 Red de Interconexion Universitaria, AR 61468 41 3 15 CEDIA, EC 28614 38 2 2 Fundacao Universidade Regional de Blume 263282 37 5 12 FUNDACAO UNIVERSIDADE DO OESTE DE SANTA Complete listing at https://bgp.nsrc.org/REN/AARNET-Seattle/data-ASnet-LACNIC AfriNIC Region per AS prefix count summary ------------------------------------------ ASN No of nets /20 equiv MaxAgg Description 2018 372 319 74 TENET-1, ZA 36914 207 82 3 KENET-AS, KE 2561 72 5 31 EUN, EG 8094 50 48 4 PUKNET, ZA 327687 37 28 3 RENU, UG 327700 35 16 1 MoRENet, MZ 6879 24 2 9 ENSTINET-, EG 37182 17 8 1 TERNET, TZ 37074 13 8 2 UG-AS, GH 37501 11 49 6 UOFS, ZA Complete listing at https://bgp.nsrc.org/REN/AARNET-Seattle/data-ASnet-AFRINIC Global Per AS prefix count summary ---------------------------------- ASN No of nets /20 equiv MaxAgg Description 2907 582 2124 457 SINET-AS Research Organization of Infor 7497 432 182 24 CSTNET-AS-AP Computer Network Informati 2018 372 319 74 TENET-1, ZA 680 279 1967 245 DFN Verein zur Foerderung eines Deutsch 7896 252 51 7 NU-AS, US 668 212 702 180 DNIC-AS-00668, US 36914 207 82 3 KENET-AS, KE 376 203 178 152 RISQ-AS, CA 5786 200 16 1 UPRENET, PR 786 186 1774 183 JANET Jisc Services Limited, GB Complete listing at https://bgp.nsrc.org/REN/AARNET-Seattle/data-ASnet Global Per AS Maximum Aggregation summary ----------------------------------------- ASN No of nets Net Savings Description 7497 432 408 CSTNET-AS-AP Computer Network Information Cente 2018 372 298 TENET-1, ZA 7896 252 245 NU-AS, US 36914 207 204 KENET-AS, KE 5786 200 199 UPRENET, PR 58647 167 165 KAGAWAU-AS Kagawa University, JP 8895 139 135 ISU Internet Services Unit ISU, SA 18558 135 131 NETBLK-RCOEK, US 1916 158 113 Rede Nacional de Ensino e Pesquisa, BR 55824 128 106 NKN-CORE-NW NKN Core Network, IN Complete listing at https://bgp.nsrc.org/REN/AARNET-Seattle/data-CIDRnet List of Unregistered Origin ASNs (Global) ----------------------------------------- Bad AS Designation Net Originated Transit AS Transit AS Name 22063 UNALLOCATED 153.10.0.0/16 2152 CSUNET-NW, US 22226 UNALLOCATED 156.1.0.0/16 2152 CSUNET-NW, US 19658 UNALLOCATED 199.27.241.0/24 11096 FLORIDANET, US 395514 UNALLOCATED 205.213.88.0/24 2381 WISCNET1-AS, US 394607 UNALLOCATED 216.100.93.0/24 23024 OCDE, US Complete listing at https://bgp.nsrc.org/REN/AARNET-Seattle/data-badAS Prefixes from the Special Purpose Address Registry (Global) ----------------------------------------------------------- Prefix Origin AS Description 192.88.99.0/24 1103 SURFNET-NL SURFnet, The Netherlands, NL Complete listing at https://bgp.nsrc.org/REN/AARNET-Seattle/data-spar Advertised Unallocated Addresses -------------------------------- Unassigned Network ASN Information AS Name 192.31.196.0/24 Origin: 112 UNASSIGNED 192.31.196.0/24 Transit: 1103 SURFNET-NL SURFnet, The Netherlands, NL 192.88.99.0/24 Origin: 1103 SURFNET-NL SURFnet, The Netherlands, NL 192.88.99.0/24 Transit: 11537 INTERNET2-RESEARCH-EDU, US Complete listing at https://bgp.nsrc.org/REN/AARNET-Seattle/data-add-IANA Number of prefixes announced per prefix length (Global) ------------------------------------------------------- /1:0 /2:0 /3:0 /4:0 /5:0 /6:0 /7:0 /8:0 /9:1 /10:2 /11:1 /12:10 /13:17 /14:34 /15:121 /16:1940 /17:384 /18:431 /19:539 /20:848 /21:879 /22:1379 /23:1509 /24:9527 /25:0 /26:0 /27:0 /28:0 /29:0 /30:0 /31:0 /32:0 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 36914 194 207 KENET-AS, KE 8895 134 139 ISU Internet Services Unit ISU, SA 23024 52 55 OCDE, US 28614 32 38 Fundacao Universidade Regional de Blumenau, BR 25977 31 45 HCCS, US 327700 31 35 MoRENet, MZ 263282 30 37 FUNDACAO UNIVERSIDADE DO OESTE DE SANTA CATARIN 27609 29 45 USC-UNIVERSITY-HOSPITAL, US 32440 29 44 LONI, US 40326 29 33 ECKERD-COLLEGE, US Complete listing at https://bgp.nsrc.org/REN/AARNET-Seattle/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:3 5:15 6:4 8:2 12:1 14:85 18:42 23:9 24:3 31:6 37:6 38:9 40:1 41:125 42:9 44:5 45:35 46:6 47:1 49:10 50:1 52:1 59:20 60:4 61:3 62:7 63:34 64:47 66:35 67:43 68:8 69:19 70:2 71:1 72:9 74:20 76:33 77:5 78:3 79:10 80:15 81:28 82:5 83:6 84:7 85:38 86:4 87:1 88:1 89:10 91:42 92:1 93:23 94:4 95:5 96:5 97:1 98:2 101:6 102:11 103:247 104:14 106:1 108:8 109:10 110:3 111:20 114:23 116:5 117:61 118:32 119:22 121:27 122:8 123:8 124:39 125:4 128:50 129:178 130:89 131:85 132:52 133:141 134:98 136:192 137:86 138:1 139:5 140:51 141:1 142:41 143:27 144:50 145:2 146:126 147:59 148:191 149:12 150:39 151:6 152:68 153:13 154:26 155:48 156:64 157:26 158:42 159:116 160:25 161:21 162:20 163:65 164:34 165:55 166:1 167:16 168:124 169:10 170:52 171:1 172:2 173:2 175:29 176:8 177:12 179:11 180:16 182:5 184:5 185:37 186:3 187:19 188:13 189:5 190:33 191:33 192:1293 193:257 194:124 195:73 196:163 197:114 198:467 199:281 200:243 201:39 202:613 203:270 204:321 205:161 206:188 207:168 208:66 209:114 210:183 211:13 212:145 213:5 214:7 216:85 217:11 218:22 219:6 220:16 222:5 223:3 End of report