[REN-BGP-stats-all] Global R&E Routing Table Report - CERNET R&E view
REN Routing Table Report
cscora at frr.nsrc.org
Sat Jun 5 20:45:11 UTC 2021
Global R&E Routing Table Report 20:45 GMT Sat 05 Jun, 2021
Report Website: https://bgp.nsrc.org/REN
Detailed Analysis: https://bgp.nsrc.org/REN/CERNET/
Analysis Summary
----------------
BGP routing table entries examined: 17313
Prefixes after maximum aggregation (per Origin AS): 9804
Deaggregation factor: 1.77
Unique aggregates announced (without unneeded subnets): 11037
Total ASes present in the Internet Routing Table: 2627
Prefixes per ASN: 6.59
Origin-only ASes present in the Internet Routing Table: 2251
Origin ASes announcing only one prefix: 1058
Transit ASes present in the Internet Routing Table: 376
Transit-only ASes present in the Internet Routing Table: 60
Average AS path length visible in the Internet Routing Table: 4.4
Max AS path length visible: 16
Max AS path prepend of ASN ( 10497) 11
Prefixes from unregistered ASNs in the Routing Table: 16
Number of instances of unregistered ASNs: 16
Number of 32-bit ASNs allocated by the RIRs: 36241
Number of 32-bit ASNs visible in the Routing Table: 561
Prefixes from 32-bit ASNs in the Routing Table: 1600
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: 3
Number of addresses announced to Internet: 197714864
Equivalent to 11 /8s, 200 /16s and 227 /24s
Percentage of available address space announced: 5.3
Percentage of allocated address space announced: 5.3
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: 2168
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 3847
Total APNIC prefixes after maximum aggregation: 2157
APNIC Deaggregation factor: 1.78
Prefixes being announced from the APNIC address blocks: 3849
Unique aggregates announced from the APNIC address blocks: 2536
APNIC Region origin ASes present in the Internet Routing Table: 528
APNIC Prefixes per ASN: 7.29
APNIC Region origin ASes announcing only one prefix: 227
APNIC Region transit ASes present in the Internet Routing Table: 52
Average APNIC Region AS path length visible: 4.5
Max APNIC Region AS path length visible: 14
Number of APNIC region 32-bit ASNs visible in the Routing Table: 192
Number of APNIC addresses announced to Internet: 45128192
Equivalent to 2 /8s, 176 /16s and 154 /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, 131072-147769
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: 7442
Total ARIN prefixes after maximum aggregation: 4122
ARIN Deaggregation factor: 1.81
Prefixes being announced from the ARIN address blocks: 7466
Unique aggregates announced from the ARIN address blocks: 4648
ARIN Region origin ASes present in the Internet Routing Table: 1142
ARIN Prefixes per ASN: 6.54
ARIN Region origin ASes announcing only one prefix: 419
ARIN Region transit ASes present in the Internet Routing Table: 159
Average ARIN Region AS path length visible: 4.4
Max ARIN Region AS path length visible: 16
Number of ARIN region 32-bit ASNs visible in the Routing Table: 143
Number of ARIN addresses announced to Internet: 87482000
Equivalent to 5 /8s, 54 /16s and 222 /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: 2738
RIPE Deaggregation factor: 1.23
Prefixes being announced from the RIPE address blocks: 3347
Unique aggregates announced from the RIPE address blocks: 2736
RIPE Region origin ASes present in the Internet Routing Table: 668
RIPE Prefixes per ASN: 5.01
RIPE Region origin ASes announcing only one prefix: 319
RIPE Region transit ASes present in the Internet Routing Table: 109
Average RIPE Region AS path length visible: 3.9
Max RIPE Region AS path length visible: 14
Number of RIPE region 32-bit ASNs visible in the Routing Table: 125
Number of RIPE addresses announced to Internet: 58205696
Equivalent to 3 /8s, 120 /16s and 38 /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: 1462
Total LACNIC prefixes after maximum aggregation: 587
LACNIC Deaggregation factor: 2.49
Prefixes being announced from the LACNIC address blocks: 1459
Unique aggregates announced from the LACNIC address blocks: 817
LACNIC Region origin ASes present in the Internet Routing Table: 178
LACNIC Prefixes per ASN: 8.20
LACNIC Region origin ASes announcing only one prefix: 72
LACNIC Region transit ASes present in the Internet Routing Table: 28
Average LACNIC Region AS path length visible: 5.0
Max LACNIC Region AS path length visible: 12
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 77
Number of LACNIC addresses announced to Internet: 4191520
Equivalent to 0 /8s, 63 /16s and 245 /24s
LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247,
61440-61951, 64099-64197, 262144-272796 + 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: 1189
Total AfriNIC prefixes after maximum aggregation: 185
AfriNIC Deaggregation factor: 6.43
Prefixes being announced from the AfriNIC address blocks: 1189
Unique aggregates announced from the AfriNIC address blocks: 297
AfriNIC Region origin ASes present in the Internet Routing Table: 47
AfriNIC Prefixes per ASN: 25.30
AfriNIC Region origin ASes announcing only one prefix: 21
AfriNIC Region transit ASes present in the Internet Routing Table: 10
Average AfriNIC Region AS path length visible: 4.3
Max AfriNIC Region AS path length visible: 8
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 24
Number of AfriNIC addresses announced to Internet: 2702848
Equivalent to 0 /8s, 41 /16s and 62 /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 607 2155 455 UNALLOCATED
1237 191 75 137 UNALLOCATED
7575 180 331 127 UNALLOCATED
58647 164 18 2 UNALLOCATED
55824 128 19 22 UNALLOCATED
4538 111 4160 69 UNALLOCATED
4621 82 37 11 UNALLOCATED
23570 59 5 11 UNALLOCATED
1659 57 1450 34 UNALLOCATED
2697 55 3 31 UNALLOCATED
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 245 51 7 UNALLOCATED
376 235 180 158 UNALLOCATED
5786 201 16 1 UNALLOCATED
2152 160 507 92 UNALLOCATED
18558 137 18 4 UNALLOCATED
2920 112 34 6 UNALLOCATED
21976 86 51 18 UNALLOCATED
22742 86 62 44 UNALLOCATED
1736 80 16 1 UNALLOCATED
3 78 528 13 UNALLOCATED
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
680 273 1996 235 UNALLOCATED
786 187 1787 185 UNALLOCATED
8895 140 24 4 UNALLOCATED
559 116 550 107 UNALLOCATED
1103 98 1520 85 UNALLOCATED
137 82 677 77 UNALLOCATED
553 72 449 72 UNALLOCATED
2200 66 647 61 UNALLOCATED
2614 62 32 59 UNALLOCATED
1930 56 82 51 UNALLOCATED
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 204 207 41 UNALLOCATED
28391 152 10 66 UNALLOCATED
11340 90 24 51 UNALLOCATED
1251 66 37 20 UNALLOCATED
2715 60 102 40 UNALLOCATED
4270 44 16 1 UNALLOCATED
19611 44 17 2 UNALLOCATED
61468 41 3 15 UNALLOCATED
28614 38 2 2 UNALLOCATED
28571 37 26 15 UNALLOCATED
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
36914 413 82 3 UNALLOCATED
2018 317 319 71 UNALLOCATED
327687 136 28 3 UNALLOCATED
2561 74 5 34 UNALLOCATED
8094 55 48 4 UNALLOCATED
327700 39 16 1 UNALLOCATED
37215 29 8 1 UNALLOCATED
6879 24 2 9 UNALLOCATED
37074 11 8 2 UNALLOCATED
37501 11 49 6 UNALLOCATED
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 607 2155 455 UNALLOCATED
36914 413 82 3 UNALLOCATED
2018 317 319 71 UNALLOCATED
680 273 1996 235 UNALLOCATED
7896 245 51 7 UNALLOCATED
376 235 180 158 UNALLOCATED
1916 204 207 41 UNALLOCATED
5786 201 16 1 UNALLOCATED
1237 191 75 137 UNALLOCATED
786 187 1787 185 UNALLOCATED
Complete listing at https://bgp.nsrc.org/REN/CERNET/data-ASnet
Global Per AS Maximum Aggregation summary
-----------------------------------------
ASN No of nets Net Savings Description
36914 413 410 UNALLOCATED
2018 317 246 UNALLOCATED
7896 245 238 UNALLOCATED
5786 201 200 UNALLOCATED
1916 204 163 UNALLOCATED
58647 164 162 UNALLOCATED
8895 140 136 UNALLOCATED
18558 137 133 UNALLOCATED
327687 136 133 UNALLOCATED
55824 128 106 UNALLOCATED
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
36843 UNALLOCATED 64.56.80.0/23 11096 UNALLOCATED
19658 UNALLOCATED 65.205.131.0/24 11096 UNALLOCATED
36843 UNALLOCATED 108.59.20.0/24 11096 UNALLOCATED
36843 UNALLOCATED 108.59.23.0/24 11096 UNALLOCATED
36843 UNALLOCATED 131.91.183.0/24 11096 UNALLOCATED
36843 UNALLOCATED 131.91.252.0/22 11096 UNALLOCATED
36843 UNALLOCATED 146.201.218.0/24 11096 UNALLOCATED
36843 UNALLOCATED 146.201.219.0/24 11096 UNALLOCATED
22063 UNALLOCATED 153.10.0.0/16 2152 UNALLOCATED
36843 UNALLOCATED 162.223.23.0/24 11096 UNALLOCATED
Complete listing at https://bgp.nsrc.org/REN/CERNET/data-badAS
Prefixes from private and non-routed address space (Global)
-----------------------------------------------------------
Prefix Origin AS Description
192.88.99.0/24 1103 UNALLOCATED
Complete listing at https://bgp.nsrc.org/REN/CERNET/data-dsua
Advertised Unallocated Addresses
--------------------------------
Unassigned Network ASN Information AS Name
164.160.240.0/20 Origin: 328439 UNALLOCATED
Transit: 327992 UNALLOCATED
192.31.196.0/24 Origin: 112 UNALLOCATED
Transit: 1103 UNALLOCATED
192.88.99.0/24 Origin: 1103 UNALLOCATED
Transit: 11537 UNALLOCATED
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 /12:10
/13:18 /14:32 /15:112 /16:1939 /17:371 /18:416
/19:545 /20:796 /21:831 /22:1333 /23:1349 /24:9445
/25:46 /26:30 /27:35 /28:1 /29:0 /30:0
/31:0 /32:0
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
36914 387 413 UNALLOCATED
8895 135 140 UNALLOCATED
23024 53 56 UNALLOCATED
327700 33 39 UNALLOCATED
28614 32 38 UNALLOCATED
25977 31 45 UNALLOCATED
263282 30 37 UNALLOCATED
27609 29 45 UNALLOCATED
32440 29 44 UNALLOCATED
40326 29 33 UNALLOCATED
Complete listing at https://bgp.nsrc.org/REN/CERNET/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:3 5:15 8:2 12:1 14:84 18:41
23:5 24:6 31:6 37:6 38:9 40:1
41:237 42:1 44:5 45:54 46:7 47:1
49:8 50:1 52:1 59:3 61:4 62:7
63:34 64:46 65:1 66:38 67:44 68:8
69:17 71:1 72:11 74:19 76:32 77:5
79:10 80:13 81:32 82:4 83:8 84:8
85:33 86:9 87:1 88:1 89:10 91:46
92:1 93:12 94:4 95:4 96:5 97:1
98:2 102:9 103:253 104:14 108:8 109:8
110:3 111:20 112:4 114:23 115:1 116:4
117:61 118:3 119:3 121:20 125:5 128:79
129:173 130:91 131:90 132:56 133:137 134:89
136:192 137:146 138:11 139:5 140:34 141:2
142:43 143:35 144:53 146:120 147:63 148:159
149:13 150:34 151:5 152:75 153:11 154:24
155:45 156:64 157:25 158:45 159:19 160:26
161:17 162:16 163:61 164:40 165:14 166:1
167:15 168:124 169:9 170:51 171:1 172:1
173:2 175:31 176:8 177:7 178:1 179:12
180:20 181:11 182:6 184:7 185:39 186:3
187:18 188:13 189:6 190:44 191:36 192:1247
193:244 194:143 195:102 196:166 197:201 198:439
199:234 200:261 201:39 202:509 203:420 204:345
205:172 206:182 207:169 208:58 209:111 210:116
211:13 212:165 213:4 216:65 217:16 218:6
219:7 220:24 222:2
End of report
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