Global R&E Routing Table Report 20:10 GMT Sat 25 Dec, 2021 BGP Table (R&E) as seen at CERNET. Report Website: https://bgp.nsrc.org/REN Detailed Analysis: https://bgp.nsrc.org/REN/CERNET/ Analysis Summary ---------------- BGP routing table entries examined: 14142 Prefixes after maximum aggregation (per Origin AS): 7496 Deaggregation factor: 1.89 Unique aggregates announced (without unneeded subnets): 8651 Total ASes present in the Internet Routing Table: 2085 Prefixes per ASN: 6.78 Origin-only ASes present in the Internet Routing Table: 1796 Origin ASes announcing only one prefix: 815 Transit ASes present in the Internet Routing Table: 289 Transit-only ASes present in the Internet Routing Table: 47 Average AS path length visible in the Internet Routing Table: 4.4 Max AS path length visible: 15 Max AS path prepend of ASN ( 10497) 11 Prefixes from unregistered ASNs in the Routing Table: 2 Number of instances of unregistered ASNs: 2 Number of 32-bit ASNs allocated by the RIRs: 38184 Number of 32-bit ASNs visible in the Routing Table: 423 Prefixes from 32-bit ASNs in the Routing Table: 1223 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: 151671296 Equivalent to 9 /8s, 10 /16s and 82 /24s Percentage of available address space announced: 4.1 Percentage of allocated address space announced: 4.1 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: 1513 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 3484 Total APNIC prefixes after maximum aggregation: 1990 APNIC Deaggregation factor: 1.75 Prefixes being announced from the APNIC address blocks: 3486 Unique aggregates announced from the APNIC address blocks: 2312 APNIC Region origin ASes present in the Internet Routing Table: 457 APNIC Prefixes per ASN: 7.63 APNIC Region origin ASes announcing only one prefix: 200 APNIC Region transit ASes present in the Internet Routing Table: 48 Average APNIC Region AS path length visible: 4.5 Max APNIC Region AS path length visible: 15 Number of APNIC region 32-bit ASNs visible in the Routing Table: 134 Number of APNIC addresses announced to Internet: 44811776 Equivalent to 2 /8s, 171 /16s and 198 /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: 7374 Total ARIN prefixes after maximum aggregation: 4096 ARIN Deaggregation factor: 1.80 Prefixes being announced from the ARIN address blocks: 7382 Unique aggregates announced from the ARIN address blocks: 4591 ARIN Region origin ASes present in the Internet Routing Table: 1147 ARIN Prefixes per ASN: 6.44 ARIN Region origin ASes announcing only one prefix: 426 ARIN Region transit ASes present in the Internet Routing Table: 154 Average ARIN Region AS path length visible: 4.4 Max ARIN Region AS path length visible: 14 Number of ARIN region 32-bit ASNs visible in the Routing Table: 157 Number of ARIN addresses announced to Internet: 86722816 Equivalent to 5 /8s, 43 /16s and 73 /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: 899 Total RIPE prefixes after maximum aggregation: 616 RIPE Deaggregation factor: 1.46 Prefixes being announced from the RIPE address blocks: 888 Unique aggregates announced from the RIPE address blocks: 618 RIPE Region origin ASes present in the Internet Routing Table: 206 RIPE Prefixes per ASN: 4.31 RIPE Region origin ASes announcing only one prefix: 97 RIPE Region transit ASes present in the Internet Routing Table: 36 Average RIPE Region AS path length visible: 4.3 Max RIPE Region AS path length visible: 12 Number of RIPE region 32-bit ASNs visible in the Routing Table: 29 Number of RIPE addresses announced to Internet: 13404416 Equivalent to 0 /8s, 204 /16s and 137 /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: 1486 Total LACNIC prefixes after maximum aggregation: 604 LACNIC Deaggregation factor: 2.46 Prefixes being announced from the LACNIC address blocks: 1487 Unique aggregates announced from the LACNIC address blocks: 834 LACNIC Region origin ASes present in the Internet Routing Table: 176 LACNIC Prefixes per ASN: 8.45 LACNIC Region origin ASes announcing only one prefix: 71 LACNIC Region transit ASes present in the Internet Routing Table: 25 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: 76 Number of LACNIC addresses announced to Internet: 4065536 Equivalent to 0 /8s, 62 /16s and 9 /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: 897 Total AfriNIC prefixes after maximum aggregation: 188 AfriNIC Deaggregation factor: 4.77 Prefixes being announced from the AfriNIC address blocks: 897 Unique aggregates announced from the AfriNIC address blocks: 294 AfriNIC Region origin ASes present in the Internet Routing Table: 50 AfriNIC Prefixes per ASN: 17.94 AfriNIC Region origin ASes announcing only one prefix: 21 AfriNIC Region transit ASes present in the Internet Routing Table: 12 Average AfriNIC Region AS path length visible: 3.7 Max AfriNIC Region AS path length visible: 8 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 27 Number of AfriNIC addresses announced to Internet: 2666240 Equivalent to 0 /8s, 40 /16s and 175 /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 610 2156 455 SINET-AS Research Organization of Infor 1237 185 74 135 KREONET-AS-KR KISTI, KR 7575 177 330 123 AARNET-AS-AP Australian Academic and Re 58647 165 18 2 KAGAWAU-AS Kagawa University, JP 4538 112 4160 69 ERX-CERNET-BKB China Education and Rese 4621 80 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 55 1466 35 ERX-TANET-ASN1 Taiwan Academic Network 9317 49 16 1 ITISNET-AS INHA UNIVERSITY, KR Complete listing at https://bgp.nsrc.org/REN/CERNET/data-ASnet-APNIC ARIN Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 7896 251 51 7 NU-AS, US 376 203 178 152 RISQ-AS, CA 5786 200 16 1 UPRENET, PR 2152 144 507 85 CSUNET-NW, US 18558 134 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 3477 72 71 42 NOAA-NWAVE, US Complete listing at https://bgp.nsrc.org/REN/CERNET/data-ASnet-ARIN RIPE Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 8895 143 24 4 ISU Internet Services Unit ISU, SA 1103 98 1520 85 SURFNET-NL SURFnet, The Netherlands, NL 1653 53 167 50 SUNET SUNET Swedish University Network, 1741 40 165 19 FUNETAS, FI 288 26 5 26 ESA Robert Bosch Strasse 5, DE 3218 22 4 15 COSMOS-3218-AS AS-COSMOS root, RU 3267 21 67 17 RUNNET, RU 8674 16 2 11 NETNOD-IX Netnod Internet Exchange Sver 224 13 256 13 UNINETT UNINETT, The Norwegian Universi 47862 13 1 5 ANKABUT, AE Complete listing at https://bgp.nsrc.org/REN/CERNET/data-ASnet-RIPE LACNIC Region per AS prefix count summary ----------------------------------------- ASN No of nets /20 equiv MaxAgg Description 1916 176 207 41 Rede Nacional de Ensino e Pesquisa, BR 28391 152 10 66 Universidad Juarez Autonoma de Tabasco, 11340 94 24 54 Red Universitaria Nacional, CL 1251 65 37 20 FUNDACAO DE AMPARO A PESQUISA DO ESTADO 2715 58 102 38 Fundacao Carlos Chagas Filho de Amparo 52286 53 4 31 Columbus Networks Guatemala, GT 19611 45 17 2 Associacao Antonio Vieira - Unisinos, B 4270 43 16 1 Red de Interconexion Universitaria, AR 61468 41 3 15 CEDIA, EC 28614 38 2 2 Fundacao Universidade Regional de Blume Complete listing at https://bgp.nsrc.org/REN/CERNET/data-ASnet-LACNIC AfriNIC Region per AS prefix count summary ------------------------------------------ ASN No of nets /20 equiv MaxAgg Description 2018 350 319 74 TENET-1, ZA 36914 192 82 3 KENET-AS, KE 2561 72 5 31 EUN, EG 8094 50 48 4 PUKNET, ZA 327700 45 16 1 MoRENet, MZ 327687 38 28 3 RENU, UG 6879 24 2 9 ENSTINET-, EG 37074 13 8 2 UG-AS, GH 37182 13 8 1 TERNET, TZ 37501 11 49 6 UOFS, ZA Complete listing at https://bgp.nsrc.org/REN/CERNET/data-ASnet-AFRINIC Global Per AS prefix count summary ---------------------------------- ASN No of nets /20 equiv MaxAgg Description 2907 610 2156 455 SINET-AS Research Organization of Infor 2018 350 319 74 TENET-1, ZA 7896 251 51 7 NU-AS, US 376 203 178 152 RISQ-AS, CA 5786 200 16 1 UPRENET, PR 36914 192 82 3 KENET-AS, KE 1237 185 74 135 KREONET-AS-KR KISTI, KR 7575 177 330 123 AARNET-AS-AP Australian Academic and Re 1916 176 207 41 Rede Nacional de Ensino e Pesquisa, BR 58647 165 18 2 KAGAWAU-AS Kagawa University, JP Complete listing at https://bgp.nsrc.org/REN/CERNET/data-ASnet Global Per AS Maximum Aggregation summary ----------------------------------------- ASN No of nets Net Savings Description 2018 350 276 TENET-1, ZA 7896 251 244 NU-AS, US 5786 200 199 UPRENET, PR 36914 192 189 KENET-AS, KE 58647 165 163 KAGAWAU-AS Kagawa University, JP 8895 143 139 ISU Internet Services Unit ISU, SA 1916 176 135 Rede Nacional de Ensino e Pesquisa, BR 18558 134 130 NETBLK-RCOEK, US 2920 108 102 LACOE, US 28391 152 86 Universidad Juarez Autonoma de Tabasco, MX Complete listing at https://bgp.nsrc.org/REN/CERNET/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 19658 UNALLOCATED 199.27.241.0/24 11096 FLORIDANET, US Complete listing at https://bgp.nsrc.org/REN/CERNET/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/CERNET/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/CERNET/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 /12:9 /13:16 /14:26 /15:84 /16:1390 /17:333 /18:385 /19:445 /20:687 /21:640 /22:1041 /23:1108 /24:7974 /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 179 192 KENET-AS, KE 8895 138 143 ISU Internet Services Unit ISU, SA 23024 53 56 OCDE, US 327700 39 45 MoRENet, MZ 28614 32 38 Fundacao Universidade Regional de Blumenau, BR 25977 31 45 HCCS, US 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/CERNET/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:3 8:2 12:1 18:42 23:9 24:3 38:9 40:1 41:123 44:3 45:39 47:1 49:4 50:1 52:1 59:3 61:3 62:2 63:35 64:46 66:36 67:43 68:8 69:21 71:1 72:10 74:20 76:33 77:4 80:7 81:1 82:3 84:4 85:14 86:4 87:1 89:2 91:16 92:1 93:1 95:1 96:5 97:1 98:2 101:4 102:14 103:172 104:14 108:8 109:7 110:3 111:16 112:4 114:23 116:5 117:61 119:3 121:17 125:1 128:83 129:170 130:93 131:74 132:58 133:139 134:91 136:191 137:79 138:8 139:5 140:36 141:1 142:41 143:33 144:30 146:126 147:54 148:153 149:13 150:37 151:4 152:74 153:1 154:26 155:50 156:66 157:26 158:10 159:18 160:25 161:16 162:19 163:60 164:46 165:54 166:1 167:16 168:161 169:10 170:53 171:1 172:2 173:2 175:30 176:8 177:13 179:11 180:5 181:11 182:6 184:5 185:12 186:3 187:18 188:3 189:3 190:50 191:37 192:879 193:78 194:53 195:52 196:148 197:108 198:428 199:236 200:255 201:39 202:533 203:400 204:315 205:168 206:182 207:166 208:55 209:109 210:107 211:13 212:136 213:2 216:86 217:1 218:6 219:7 220:17 222:2 End of report