IPv4 R&E Routing Table Report 22:00 GMT Sun 04 Aug, 2024 IPv4 BGP Table (R&E) as seen at Internet2. Report Website: https://bgp.nsrc.org/REN Detailed Analysis: https://bgp.nsrc.org/REN/Internet2/ Analysis Summary ---------------- BGP routing table entries examined: 24087 Prefixes after maximum aggregation (per Origin AS): 13358 Deaggregation factor: 1.80 Unique aggregates announced (without unneeded subnets): 15555 Number of IPv4 prefixes with a valid ROA: 10910 Number of IPv4 prefixes with an invalid ROA: 20 Number of IPv4 prefixes with no ROA: 13157 Total ASes present in the Internet Routing Table: 2772 Prefixes per ASN: 8.69 Origin-only ASes present in the Internet Routing Table: 2400 Origin ASes announcing only one prefix: 1058 Transit ASes present in the Internet Routing Table: 372 Transit-only ASes present in the Internet Routing Table: 65 Paths with bogon ASNs present in the IPv4 Routing Table: 0 Average AS path length visible in the Internet Routing Table: 3.3 Max AS path length visible: 18 Max AS path prepend of ASN (395156) 12 Prefixes from unregistered ASNs in the Routing Table: 1 Number of instances of unregistered ASNs: 1 Number of 32-bit ASNs allocated by the RIRs: 45098 Number of 32-bit ASNs visible in the Routing Table: 646 Prefixes from 32-bit ASNs in the Routing Table: 1814 Number of bogon 32-bit ASNs visible in the Routing Table: 0 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 12 Number of addresses announced to Internet: 240058096 Equivalent to 14 /8s, 78 /16s and 254 /24s Percentage of available address space announced: 6.5 Percentage of allocated address space announced: 6.5 Percentage of available address space allocated: 100.0 Percentage of address space in use by end-sites: 99.6 Total number of prefixes smaller than registry allocations: 3356 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 4696 Total APNIC prefixes after maximum aggregation: 2302 APNIC Deaggregation factor: 2.04 Prefixes being announced from the APNIC address blocks: 4801 Unique aggregates announced from the APNIC address blocks: 2747 APNIC Region origin ASes present in the Internet Routing Table: 563 APNIC Prefixes per ASN: 8.53 APNIC Region origin ASes announcing only one prefix: 241 APNIC Region transit ASes present in the Internet Routing Table: 61 Average APNIC Region AS path length visible: 3.8 Max APNIC Region AS path length visible: 14 Number of APNIC region 32-bit ASNs visible in the Routing Table: 209 Number of APNIC addresses announced to Internet: 45866048 Equivalent to 2 /8s, 187 /16s and 220 /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, 131072-153913 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: 13237 Total ARIN prefixes after maximum aggregation: 7450 ARIN Deaggregation factor: 1.78 Prefixes being announced from the ARIN address blocks: 12950 Unique aggregates announced from the ARIN address blocks: 8682 ARIN Region origin ASes present in the Internet Routing Table: 1273 ARIN Prefixes per ASN: 10.17 ARIN Region origin ASes announcing only one prefix: 439 ARIN Region transit ASes present in the Internet Routing Table: 157 Average ARIN Region AS path length visible: 2.9 Max ARIN Region AS path length visible: 15 Number of ARIN region 32-bit ASNs visible in the Routing Table: 205 Number of ARIN addresses announced to Internet: 129776560 Equivalent to 7 /8s, 188 /16s and 59 /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, 393216-402332 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: 3621 Total RIPE prefixes after maximum aggregation: 2909 RIPE Deaggregation factor: 1.24 Prefixes being announced from the RIPE address blocks: 3785 Unique aggregates announced from the RIPE address blocks: 3181 RIPE Region origin ASes present in the Internet Routing Table: 677 RIPE Prefixes per ASN: 5.59 RIPE Region origin ASes announcing only one prefix: 304 RIPE Region transit ASes present in the Internet Routing Table: 104 Average RIPE Region AS path length visible: 3.6 Max RIPE Region AS path length visible: 13 Number of RIPE region 32-bit ASNs visible in the Routing Table: 154 Number of RIPE addresses announced to Internet: 57688064 Equivalent to 3 /8s, 112 /16s and 64 /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 196608-216475 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: 1417 Total LACNIC prefixes after maximum aggregation: 537 LACNIC Deaggregation factor: 2.64 Prefixes being announced from the LACNIC address blocks: 1423 Unique aggregates announced from the LACNIC address blocks: 730 LACNIC Region origin ASes present in the Internet Routing Table: 157 LACNIC Prefixes per ASN: 9.06 LACNIC Region origin ASes announcing only one prefix: 56 LACNIC Region transit ASes present in the Internet Routing Table: 22 Average LACNIC Region AS path length visible: 4.2 Max LACNIC Region AS path length visible: 13 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 62 Number of LACNIC addresses announced to Internet: 4228352 Equivalent to 0 /8s, 64 /16s and 133 /24s LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247, 61440-61951, 64099-64197, 262144-274844 + 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: 1115 Total AfriNIC prefixes after maximum aggregation: 159 AfriNIC Deaggregation factor: 7.01 Prefixes being announced from the AfriNIC address blocks: 1116 Unique aggregates announced from the AfriNIC address blocks: 204 AfriNIC Region origin ASes present in the Internet Routing Table: 36 AfriNIC Prefixes per ASN: 31.00 AfriNIC Region origin ASes announcing only one prefix: 18 AfriNIC Region transit ASes present in the Internet Routing Table: 9 Average AfriNIC Region AS path length visible: 2.7 Max AfriNIC Region AS path length visible: 18 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 16 Number of AfriNIC addresses announced to Internet: 2485248 Equivalent to 0 /8s, 37 /16s and 236 /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 596 2162 465 SINET-AS Research Organization of Informa 7497 447 180 24 CSTNET-AS-AP Computer Network Information 1237 191 74 144 KREONET-AS-KR KISTI, KR 58647 180 18 2 KAGAWAU-AS Kagawa University, JP 7575 172 329 115 AARNET-AS-AP Australian Academic and Rese 55824 131 18 19 NKN-CORE-NW NKN Core Network, IN 4538 129 4192 72 ERX-CERNET-BKB China Education and Resear 4762 75 4 1 MAHIDOL-BORDER-AS Mahidol University, Tha 4621 69 37 10 UNINET-AS-AP UNINET-, TH 23570 59 5 11 INCHEON-AS-KR UNIVERSITY OF INCHEON, KR Complete listing at https://bgp.nsrc.org/REN/Internet2/data-ASnet-APNIC ARIN Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 16509 3788 4813 1808 AMAZON-02, US 14618 987 4180 739 AMAZON-AES, US 668 205 648 174 DNIC-AS-00668, US 376 202 162 151 RISQ-AS, CA 5786 198 16 1 UPRENET, PR 2920 175 34 7 LACOE, US 2152 150 507 97 CENIC-2152, US 18558 135 18 4 NETBLK-RCOEK, US 81 133 517 33 NCREN, US 1 128 2 49 LVLT-1, US Complete listing at https://bgp.nsrc.org/REN/Internet2/data-ASnet-ARIN RIPE Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 680 282 1899 250 DFN Verein zur Foerderung eines Deutschen 786 184 1767 181 JANET Jisc Services Limited, GB 8895 136 24 5 ISU Internet Services Unit ISU, SA 559 113 533 103 SWITCH Peering requests: peering@switch.c 1103 96 1503 83 SURFNET-NL SURFnet, The Netherlands, NL 2614 89 26 69 ROEDUNET, RO 137 82 677 77 ASGARR Consortium GARR, IT 1930 79 88 74 RCCN Fundacao para a Ciencia e a Tecnolog 553 78 462 78 BELWUE BelWue-Koordination, DE 3267 76 26 66 NIKS, RU Complete listing at https://bgp.nsrc.org/REN/Internet2/data-ASnet-RIPE LACNIC Region per AS prefix count summary ----------------------------------------- ASN No of nets /20 equiv MaxAgg Description 1916 197 176 43 Rede Nacional de Ensino e Pesquisa, BR 28391 153 10 67 Universidad Juarez Autonoma de Tabasco, M 11340 109 25 52 Red Universitaria Nacional, CL 271640 67 8 1 UNIVERSIDADE FEDERAL DE VICOSA, BR 19611 48 17 2 Associacao Antonio Vieira - Unisinos, BR 4270 46 16 1 Red de Interconexion Universitaria, AR 2715 45 99 34 Fundacao Carlos Chagas Filho de Amparo a 61468 45 5 15 CEDIA, EC 3596 40 8 4 Universidad Autonoma Metropolitana, MX 28614 38 2 2 Fundacao Universidade Regional de Blumena Complete listing at https://bgp.nsrc.org/REN/Internet2/data-ASnet-LACNIC AfriNIC Region per AS prefix count summary ------------------------------------------ ASN No of nets /20 equiv MaxAgg Description 36914 524 82 3 KENET-AS, KE 2018 381 319 71 TENET-1, ZA 8094 47 48 18 PUKNET, ZA 327700 45 16 1 MoRENet, MZ 6879 24 2 9 ENSTINET-, EG 37182 14 8 1 TERNET, TZ 37661 13 8 5 NRaE1-AS, NG 37501 11 49 6 UOFS, ZA 36982 8 33 8 UCT, ZA 37654 6 1 6 RwEdNet-AS, RW Complete listing at https://bgp.nsrc.org/REN/Internet2/data-ASnet-AFRINIC Global Per AS prefix count summary ---------------------------------- ASN No of nets /20 equiv MaxAgg Description 16509 3788 4813 1808 AMAZON-02, US 14618 987 4180 739 AMAZON-AES, US 2907 596 2162 465 SINET-AS Research Organization of Informa 36914 524 82 3 KENET-AS, KE 7497 447 180 24 CSTNET-AS-AP Computer Network Information 2018 381 319 71 TENET-1, ZA 680 282 1899 250 DFN Verein zur Foerderung eines Deutschen 668 205 648 174 DNIC-AS-00668, US 376 202 162 151 RISQ-AS, CA 5786 198 16 1 UPRENET, PR Complete listing at https://bgp.nsrc.org/REN/Internet2/data-ASnet Global Per AS Maximum Aggregation summary ----------------------------------------- ASN No of nets Net Savings Description 36914 524 521 KENET-AS, KE 7497 447 423 CSTNET-AS-AP Computer Network Information Cente 2018 381 310 TENET-1, ZA 14618 987 248 AMAZON-AES, US 5786 198 197 UPRENET, PR 58647 180 178 KAGAWAU-AS Kagawa University, JP 2920 175 168 LACOE, US 1916 197 154 Rede Nacional de Ensino e Pesquisa, BR 2907 596 131 SINET-AS Research Organization of Information a 8895 136 131 ISU Internet Services Unit ISU, SA Complete listing at https://bgp.nsrc.org/REN/Internet2/data-CIDRnet List of Unregistered Origin ASNs (Global) ----------------------------------------- Bad AS Designation Net Originated Transit AS Transit AS Name 26971 UNALLOCATED 129.111.0.0/16 276 OTS-AS-276, US Complete listing at https://bgp.nsrc.org/REN/Internet2/data-badAS Advertised Unallocated Addresses -------------------------------- Unassigned Network ASN Information AS Name 45.42.252.0/22 Origin: 16509 AMAZON-02, US 45.42.252.0/22 Transit: 11537 INTERNET2-RESEARCH-EDU, US 64.186.3.0/24 Origin: 16509 AMAZON-02, US 64.186.3.0/24 Transit: 11537 INTERNET2-RESEARCH-EDU, US 164.160.192.0/21 Origin: 37661 NRaE1-AS, NG 164.160.192.0/21 Transit: 37288 WACREN, SN 170.39.88.0/24 Origin: 14618 AMAZON-AES, US 170.39.88.0/24 Transit: 16509 AMAZON-02, US 173.249.168.0/22 Origin: 16509 AMAZON-02, US 173.249.168.0/22 Transit: 11537 INTERNET2-RESEARCH-EDU, US Complete listing at https://bgp.nsrc.org/REN/Internet2/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 /10:1 /11:3 /12:17 /13:26 /14:58 /15:172 /16:2076 /17:482 /18:493 /19:630 /20:1015 /21:1070 /22:1682 /23:1832 /24:14222 /25:43 /26:60 /27:131 /28:11 /29:59 /30:0 /31:0 /32:3 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 16509 608 3788 AMAZON-02, US 36914 502 524 KENET-AS, KE 14618 324 987 AMAZON-AES, US 8895 131 136 ISU Internet Services Unit ISU, SA 32440 82 117 LONI, US 1 42 128 LVLT-1, US 327700 40 45 MoRENet, MZ 1916 39 197 Rede Nacional de Ensino e Pesquisa, BR 23024 38 96 OCDE, US 3267 35 76 NIKS, RU Complete listing at https://bgp.nsrc.org/REN/Internet2/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:3 3:128 4:2 5:20 6:4 8:2 12:1 13:60 14:91 15:101 16:127 18:139 23:42 24:3 31:3 34:3 35:16 37:8 38:10 40:6 41:235 42:10 43:1 44:7 45:73 46:11 47:1 49:10 50:13 52:830 54:178 58:2 59:19 60:6 61:3 62:8 63:39 64:149 65:16 66:88 67:72 68:25 69:58 70:25 71:16 72:17 74:79 75:1 76:49 77:12 78:3 79:10 80:13 81:25 82:6 83:7 84:10 85:45 86:5 87:2 88:1 89:19 91:55 92:4 93:13 94:2 95:2 96:7 97:1 98:12 99:67 101:1 102:8 103:327 104:128 107:8 108:41 109:11 111:16 113:2 114:24 115:1 116:13 117:66 118:34 119:23 121:28 122:11 123:8 124:42 125:5 128:84 129:40 130:157 131:71 132:66 133:155 134:111 135:2 136:219 137:68 138:65 139:19 140:48 141:9 142:45 143:32 144:41 145:3 146:136 147:77 148:204 149:17 150:43 151:35 152:140 153:15 154:37 155:90 156:136 157:36 158:46 159:171 160:33 161:38 162:74 163:75 164:26 165:75 166:4 167:22 168:174 169:12 170:182 171:1 172:16 173:32 174:2 175:29 176:12 177:6 178:1 179:14 180:16 181:1 182:9 184:8 185:84 186:3 187:18 188:15 189:3 190:18 191:13 192:1580 193:283 194:129 195:71 196:150 197:312 198:517 199:351 200:290 201:37 202:659 203:449 204:394 205:165 206:234 207:268 208:124 209:147 210:219 211:14 212:166 213:19 214:8 216:203 217:11 218:22 219:5 220:17 222:2 223:14 End of report